./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU --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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:39:05,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:39:05,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:39:05,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:39:05,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:39:05,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:39:05,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:39:05,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:39:05,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:39:05,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:39:05,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:39:05,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:39:05,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:39:05,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:39:05,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:39:05,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:39:05,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:39:05,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:39:05,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:39:05,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:39:05,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:39:05,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:39:05,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:39:05,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:39:05,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:39:05,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:39:05,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:39:05,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:39:05,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:39:05,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:39:05,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:39:05,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:39:05,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:39:05,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:39:05,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:39:05,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:39:05,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:39:05,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:39:05,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:39:05,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:39:05,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:39:05,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:39:05,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:39:05,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:39:05,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:39:05,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:39:05,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:39:05,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:39:05,301 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:39:05,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:39:05,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:39:05,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:39:05,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:39:05,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:39:05,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:39:05,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:39:05,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:39:05,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:39:05,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:39:05,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:39:05,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:39:05,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:39:05,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:39:05,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:39:05,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:39:05,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:39:05,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:39:05,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:39:05,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:39:05,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:39:05,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:39:05,308 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_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-02 22:39:05,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:39:05,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:39:05,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:39:05,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:39:05,654 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:39:05,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 22:39:05,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/data/b54f7b0b9/5f5e084e462d44b68ce0a31feeb285cd/FLAGdd2dbcfba [2021-11-02 22:39:06,829 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:39:06,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 22:39:06,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/data/b54f7b0b9/5f5e084e462d44b68ce0a31feeb285cd/FLAGdd2dbcfba [2021-11-02 22:39:07,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/data/b54f7b0b9/5f5e084e462d44b68ce0a31feeb285cd [2021-11-02 22:39:07,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:39:07,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:39:07,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:39:07,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:39:07,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:39:07,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:39:07" (1/1) ... [2021-11-02 22:39:07,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774ea444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:07, skipping insertion in model container [2021-11-02 22:39:07,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:39:07" (1/1) ... [2021-11-02 22:39:07,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:39:07,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:39:10,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-02 22:39:10,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:39:10,856 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:39:11,454 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-02 22:39:11,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:39:11,816 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:39:11,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11 WrapperNode [2021-11-02 22:39:11,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:39:11,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:39:11,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:39:11,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:39:11,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:11,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:13,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:39:13,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:39:13,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:39:13,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:39:13,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:13,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:13,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:13,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:14,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:15,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:15,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:15,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:39:15,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:39:15,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:39:15,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:39:15,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (1/1) ... [2021-11-02 22:39:15,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:39:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:39:15,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:39:15,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:39:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:39:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:39:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:39:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:39:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:39:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:39:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:39:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:39:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:39:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:39:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:39:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:39:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:39:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:39:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:39:48,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:39:48,643 INFO L299 CfgBuilder]: Removed 8487 assume(true) statements. [2021-11-02 22:39:48,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:39:48 BoogieIcfgContainer [2021-11-02 22:39:48,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:39:48,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:39:48,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:39:48,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:39:48,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:39:07" (1/3) ... [2021-11-02 22:39:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0a9cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:39:48, skipping insertion in model container [2021-11-02 22:39:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:39:11" (2/3) ... [2021-11-02 22:39:48,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0a9cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:39:48, skipping insertion in model container [2021-11-02 22:39:48,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:39:48" (3/3) ... [2021-11-02 22:39:48,669 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 22:39:48,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:39:48,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 22:39:48,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:39:48,803 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:39:48,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 22:39:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:39:48,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:48,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:39:48,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:39:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash -623761508, now seen corresponding path program 1 times [2021-11-02 22:39:48,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:48,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267856676] [2021-11-02 22:39:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:48,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:49,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:49,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267856676] [2021-11-02 22:39:49,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267856676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:49,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:49,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:39:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205430881] [2021-11-02 22:39:49,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:39:49,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:39:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:39:49,918 INFO L87 Difference]: Start difference. First operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:50,272 INFO L93 Difference]: Finished difference Result 10186 states and 12525 transitions. [2021-11-02 22:39:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:39:50,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 22:39:50,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:50,341 INFO L225 Difference]: With dead ends: 10186 [2021-11-02 22:39:50,341 INFO L226 Difference]: Without dead ends: 5056 [2021-11-02 22:39:50,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:39:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-11-02 22:39:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2021-11-02 22:39:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5050 states have (on average 1.218019801980198) internal successors, (6151), 5055 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6151 transitions. [2021-11-02 22:39:50,725 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6151 transitions. Word has length 69 [2021-11-02 22:39:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:50,726 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 6151 transitions. [2021-11-02 22:39:50,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6151 transitions. [2021-11-02 22:39:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:39:50,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:50,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:39:50,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:39:50,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:39:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -606369396, now seen corresponding path program 1 times [2021-11-02 22:39:50,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:50,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516650391] [2021-11-02 22:39:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:50,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:51,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:51,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516650391] [2021-11-02 22:39:51,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516650391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:51,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:51,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:39:51,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671620611] [2021-11-02 22:39:51,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:51,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:51,269 INFO L87 Difference]: Start difference. First operand 5056 states and 6151 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:51,593 INFO L93 Difference]: Finished difference Result 10073 states and 12267 transitions. [2021-11-02 22:39:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 22:39:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:51,632 INFO L225 Difference]: With dead ends: 10073 [2021-11-02 22:39:51,632 INFO L226 Difference]: Without dead ends: 5061 [2021-11-02 22:39:51,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5061 states. [2021-11-02 22:39:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5061 to 5061. [2021-11-02 22:39:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 5055 states have (on average 1.2178041543026705) internal successors, (6156), 5060 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 6156 transitions. [2021-11-02 22:39:51,845 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 6156 transitions. Word has length 69 [2021-11-02 22:39:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:51,847 INFO L470 AbstractCegarLoop]: Abstraction has 5061 states and 6156 transitions. [2021-11-02 22:39:51,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 6156 transitions. [2021-11-02 22:39:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 22:39:51,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:51,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:39:51,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:39:51,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:39:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1979646828, now seen corresponding path program 1 times [2021-11-02 22:39:51,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:51,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500335518] [2021-11-02 22:39:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:51,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:39:52,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:52,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500335518] [2021-11-02 22:39:52,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500335518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:52,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:52,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:39:52,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289520803] [2021-11-02 22:39:52,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:52,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:52,226 INFO L87 Difference]: Start difference. First operand 5061 states and 6156 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:54,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:54,862 INFO L93 Difference]: Finished difference Result 15011 states and 18286 transitions. [2021-11-02 22:39:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:54,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 22:39:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:54,937 INFO L225 Difference]: With dead ends: 15011 [2021-11-02 22:39:54,938 INFO L226 Difference]: Without dead ends: 10013 [2021-11-02 22:39:54,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2021-11-02 22:39:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 10005. [2021-11-02 22:39:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10005 states, 9999 states have (on average 1.2192219221922191) internal successors, (12191), 10004 states have internal predecessors, (12191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 12191 transitions. [2021-11-02 22:39:55,552 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 12191 transitions. Word has length 74 [2021-11-02 22:39:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:55,554 INFO L470 AbstractCegarLoop]: Abstraction has 10005 states and 12191 transitions. [2021-11-02 22:39:55,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 12191 transitions. [2021-11-02 22:39:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:39:55,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:55,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:39:55,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:39:55,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:39:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 47781799, now seen corresponding path program 1 times [2021-11-02 22:39:55,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:55,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51576915] [2021-11-02 22:39:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:55,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:39:55,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:55,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51576915] [2021-11-02 22:39:55,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51576915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:55,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:55,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:39:55,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154626588] [2021-11-02 22:39:55,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:55,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:55,958 INFO L87 Difference]: Start difference. First operand 10005 states and 12191 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:56,507 INFO L93 Difference]: Finished difference Result 10005 states and 12191 transitions. [2021-11-02 22:39:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 22:39:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:56,597 INFO L225 Difference]: With dead ends: 10005 [2021-11-02 22:39:56,597 INFO L226 Difference]: Without dead ends: 10003 [2021-11-02 22:39:56,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10003 states. [2021-11-02 22:39:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10003 to 10003. [2021-11-02 22:39:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10003 states, 9998 states have (on average 1.2191438287657532) internal successors, (12189), 10002 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10003 states to 10003 states and 12189 transitions. [2021-11-02 22:39:57,054 INFO L78 Accepts]: Start accepts. Automaton has 10003 states and 12189 transitions. Word has length 83 [2021-11-02 22:39:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:57,055 INFO L470 AbstractCegarLoop]: Abstraction has 10003 states and 12189 transitions. [2021-11-02 22:39:57,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10003 states and 12189 transitions. [2021-11-02 22:39:57,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:39:57,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:57,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:39:57,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:39:57,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:39:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1481256870, now seen corresponding path program 1 times [2021-11-02 22:39:57,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:57,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123948081] [2021-11-02 22:39:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:57,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:39:57,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:57,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123948081] [2021-11-02 22:39:57,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123948081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:57,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:57,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:39:57,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376154075] [2021-11-02 22:39:57,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:57,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:57,440 INFO L87 Difference]: Start difference. First operand 10003 states and 12189 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:58,573 INFO L93 Difference]: Finished difference Result 29849 states and 36402 transitions. [2021-11-02 22:39:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 22:39:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:58,643 INFO L225 Difference]: With dead ends: 29849 [2021-11-02 22:39:58,644 INFO L226 Difference]: Without dead ends: 19905 [2021-11-02 22:39:58,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19905 states. [2021-11-02 22:39:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19905 to 19901. [2021-11-02 22:39:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19901 states, 19896 states have (on average 1.2194410936871733) internal successors, (24262), 19900 states have internal predecessors, (24262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19901 states to 19901 states and 24262 transitions. [2021-11-02 22:39:59,690 INFO L78 Accepts]: Start accepts. Automaton has 19901 states and 24262 transitions. Word has length 84 [2021-11-02 22:39:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:59,693 INFO L470 AbstractCegarLoop]: Abstraction has 19901 states and 24262 transitions. [2021-11-02 22:39:59,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19901 states and 24262 transitions. [2021-11-02 22:39:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 22:39:59,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:59,816 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:39:59,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:39:59,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:39:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2103082099, now seen corresponding path program 1 times [2021-11-02 22:39:59,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:59,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746415812] [2021-11-02 22:39:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:59,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:40:00,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:00,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746415812] [2021-11-02 22:40:00,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746415812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:00,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:00,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:40:00,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885047246] [2021-11-02 22:40:00,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:40:00,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:40:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:00,166 INFO L87 Difference]: Start difference. First operand 19901 states and 24262 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:01,850 INFO L93 Difference]: Finished difference Result 53314 states and 64930 transitions. [2021-11-02 22:40:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:40:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-02 22:40:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:01,961 INFO L225 Difference]: With dead ends: 53314 [2021-11-02 22:40:01,962 INFO L226 Difference]: Without dead ends: 33476 [2021-11-02 22:40:02,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33476 states. [2021-11-02 22:40:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33476 to 31825. [2021-11-02 22:40:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31825 states, 31820 states have (on average 1.2207730986800753) internal successors, (38845), 31824 states have internal predecessors, (38845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31825 states to 31825 states and 38845 transitions. [2021-11-02 22:40:03,840 INFO L78 Accepts]: Start accepts. Automaton has 31825 states and 38845 transitions. Word has length 168 [2021-11-02 22:40:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:03,841 INFO L470 AbstractCegarLoop]: Abstraction has 31825 states and 38845 transitions. [2021-11-02 22:40:03,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 31825 states and 38845 transitions. [2021-11-02 22:40:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-02 22:40:03,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:03,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:40:03,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:40:03,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:40:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1646406824, now seen corresponding path program 1 times [2021-11-02 22:40:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:03,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909785360] [2021-11-02 22:40:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:03,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:40:04,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:04,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909785360] [2021-11-02 22:40:04,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909785360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:04,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:04,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:40:04,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525880762] [2021-11-02 22:40:04,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:40:04,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:40:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:04,433 INFO L87 Difference]: Start difference. First operand 31825 states and 38845 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:06,562 INFO L93 Difference]: Finished difference Result 77340 states and 94859 transitions. [2021-11-02 22:40:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:40:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2021-11-02 22:40:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:06,734 INFO L225 Difference]: With dead ends: 77340 [2021-11-02 22:40:06,734 INFO L226 Difference]: Without dead ends: 45578 [2021-11-02 22:40:06,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45578 states. [2021-11-02 22:40:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45578 to 45569. [2021-11-02 22:40:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45569 states, 45564 states have (on average 1.2305109296813275) internal successors, (56067), 45568 states have internal predecessors, (56067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45569 states to 45569 states and 56067 transitions. [2021-11-02 22:40:08,945 INFO L78 Accepts]: Start accepts. Automaton has 45569 states and 56067 transitions. Word has length 283 [2021-11-02 22:40:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:08,945 INFO L470 AbstractCegarLoop]: Abstraction has 45569 states and 56067 transitions. [2021-11-02 22:40:08,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 45569 states and 56067 transitions. [2021-11-02 22:40:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-02 22:40:08,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:08,978 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:40:08,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:40:08,979 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:40:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1500281904, now seen corresponding path program 1 times [2021-11-02 22:40:08,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:08,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839282676] [2021-11-02 22:40:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:08,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:40:09,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:09,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839282676] [2021-11-02 22:40:09,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839282676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:09,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:09,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:40:09,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940544801] [2021-11-02 22:40:09,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:40:09,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:40:09,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:09,415 INFO L87 Difference]: Start difference. First operand 45569 states and 56067 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:13,995 INFO L93 Difference]: Finished difference Result 105164 states and 129959 transitions. [2021-11-02 22:40:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:40:13,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 330 [2021-11-02 22:40:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:14,147 INFO L225 Difference]: With dead ends: 105164 [2021-11-02 22:40:14,147 INFO L226 Difference]: Without dead ends: 59658 [2021-11-02 22:40:14,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59658 states. [2021-11-02 22:40:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59658 to 59649. [2021-11-02 22:40:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59649 states, 59644 states have (on average 1.237090067735229) internal successors, (73785), 59648 states have internal predecessors, (73785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59649 states to 59649 states and 73785 transitions. [2021-11-02 22:40:17,062 INFO L78 Accepts]: Start accepts. Automaton has 59649 states and 73785 transitions. Word has length 330 [2021-11-02 22:40:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:17,063 INFO L470 AbstractCegarLoop]: Abstraction has 59649 states and 73785 transitions. [2021-11-02 22:40:17,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 59649 states and 73785 transitions. [2021-11-02 22:40:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-02 22:40:17,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:17,103 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:40:17,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:40:17,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:40:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2002375270, now seen corresponding path program 1 times [2021-11-02 22:40:17,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:17,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648360853] [2021-11-02 22:40:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:17,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:40:17,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:17,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648360853] [2021-11-02 22:40:17,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648360853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:17,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:17,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:40:17,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629748546] [2021-11-02 22:40:17,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:40:17,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:17,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:40:17,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:17,710 INFO L87 Difference]: Start difference. First operand 59649 states and 73785 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:20,265 INFO L93 Difference]: Finished difference Result 120243 states and 148606 transitions. [2021-11-02 22:40:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:40:20,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2021-11-02 22:40:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:20,425 INFO L225 Difference]: With dead ends: 120243 [2021-11-02 22:40:20,425 INFO L226 Difference]: Without dead ends: 60657 [2021-11-02 22:40:20,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60657 states. [2021-11-02 22:40:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60657 to 59697. [2021-11-02 22:40:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59697 states, 59692 states have (on average 1.2368994170073042) internal successors, (73833), 59696 states have internal predecessors, (73833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59697 states to 59697 states and 73833 transitions. [2021-11-02 22:40:22,836 INFO L78 Accepts]: Start accepts. Automaton has 59697 states and 73833 transitions. Word has length 353 [2021-11-02 22:40:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:22,837 INFO L470 AbstractCegarLoop]: Abstraction has 59697 states and 73833 transitions. [2021-11-02 22:40:22,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 59697 states and 73833 transitions. [2021-11-02 22:40:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-02 22:40:22,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:22,870 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:40:22,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:40:22,871 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:40:22,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1309975412, now seen corresponding path program 1 times [2021-11-02 22:40:22,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:22,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892249162] [2021-11-02 22:40:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:22,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:40:23,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:23,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892249162] [2021-11-02 22:40:23,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892249162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:23,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:23,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:40:23,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015884065] [2021-11-02 22:40:23,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:40:23,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:40:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:23,473 INFO L87 Difference]: Start difference. First operand 59697 states and 73833 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:26,316 INFO L93 Difference]: Finished difference Result 119811 states and 148126 transitions. [2021-11-02 22:40:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:40:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2021-11-02 22:40:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:26,451 INFO L225 Difference]: With dead ends: 119811 [2021-11-02 22:40:26,451 INFO L226 Difference]: Without dead ends: 60177 [2021-11-02 22:40:26,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60177 states. [2021-11-02 22:40:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60177 to 59745. [2021-11-02 22:40:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59745 states, 59740 states have (on average 1.236709072648142) internal successors, (73881), 59744 states have internal predecessors, (73881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59745 states to 59745 states and 73881 transitions. [2021-11-02 22:40:28,709 INFO L78 Accepts]: Start accepts. Automaton has 59745 states and 73881 transitions. Word has length 365 [2021-11-02 22:40:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:28,710 INFO L470 AbstractCegarLoop]: Abstraction has 59745 states and 73881 transitions. [2021-11-02 22:40:28,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 59745 states and 73881 transitions. [2021-11-02 22:40:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-02 22:40:28,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:28,744 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:40:28,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:40:28,745 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:40:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1376374872, now seen corresponding path program 1 times [2021-11-02 22:40:28,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:28,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060639120] [2021-11-02 22:40:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:28,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:40:29,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:29,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060639120] [2021-11-02 22:40:29,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060639120] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:29,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152620616] [2021-11-02 22:40:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:29,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:29,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:29,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:29,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:40:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:31,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 6908 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:40:31,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-02 22:40:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152620616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:32,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:32,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-02 22:40:32,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433930158] [2021-11-02 22:40:32,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:40:32,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:40:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:40:32,913 INFO L87 Difference]: Start difference. First operand 59745 states and 73881 transitions. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:35,989 INFO L93 Difference]: Finished difference Result 120410 states and 148782 transitions. [2021-11-02 22:40:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:40:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2021-11-02 22:40:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:36,093 INFO L225 Difference]: With dead ends: 120410 [2021-11-02 22:40:36,093 INFO L226 Difference]: Without dead ends: 60710 [2021-11-02 22:40:36,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:40:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60710 states. [2021-11-02 22:40:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60710 to 60278. [2021-11-02 22:40:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60278 states, 60273 states have (on average 1.2346158313009141) internal successors, (74414), 60277 states have internal predecessors, (74414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60278 states to 60278 states and 74414 transitions. [2021-11-02 22:40:38,331 INFO L78 Accepts]: Start accepts. Automaton has 60278 states and 74414 transitions. Word has length 375 [2021-11-02 22:40:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:38,332 INFO L470 AbstractCegarLoop]: Abstraction has 60278 states and 74414 transitions. [2021-11-02 22:40:38,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 60278 states and 74414 transitions. [2021-11-02 22:40:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-11-02 22:40:38,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:38,358 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-02 22:40:38,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:38,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:38,573 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 22:40:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash -922372892, now seen corresponding path program 2 times [2021-11-02 22:40:38,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:38,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163504787] [2021-11-02 22:40:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:38,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-02 22:40:39,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:39,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163504787] [2021-11-02 22:40:39,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163504787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:39,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483634443] [2021-11-02 22:40:39,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:40:39,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:39,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:39,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376d84e9-6f9e-4c92-ab0f-6f1255543fde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:41:38,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:41:38,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:38,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 7133 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:41:38,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-02 22:41:39,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483634443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:39,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:39,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-02 22:41:39,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83700272] [2021-11-02 22:41:39,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:41:39,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:41:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:41:39,730 INFO L87 Difference]: Start difference. First operand 60278 states and 74414 transitions. Second operand has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)