./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa --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 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:02:36,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:02:36,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:02:36,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:02:36,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:02:36,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:02:36,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:02:36,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:02:36,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:02:36,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:02:36,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:02:36,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:02:36,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:02:36,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:02:36,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:02:36,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:02:36,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:02:36,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:02:36,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:02:36,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:02:36,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:02:36,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:02:36,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:02:36,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:02:36,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:02:36,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:02:36,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:02:36,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:02:36,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:02:36,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:02:36,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:02:36,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:02:36,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:02:36,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:02:36,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:02:36,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:02:36,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:02:36,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:02:36,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:02:36,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:02:36,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:02:36,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:02:36,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:02:36,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:02:36,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:02:36,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:02:36,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:02:36,245 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:02:36,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:02:36,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:02:36,246 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:02:36,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:02:36,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:02:36,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:02:36,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:02:36,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:02:36,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:02:36,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:02:36,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:02:36,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:02:36,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:02:36,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:02:36,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:02:36,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:02:36,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:02:36,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:02:36,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:02:36,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:02:36,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:02:36,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:02:36,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:02:36,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:02:36,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:02:36,255 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_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c33dd4a8b9d397de123c51515d9ce94b0ce1f1fda3976c2bf2bd86eef00096 [2021-12-06 23:02:36,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:02:36,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:02:36,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:02:36,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:02:36,462 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:02:36,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-06 23:02:36,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/data/5022613ed/d8c1f370182749aeade98783130676ef/FLAG74c46fece [2021-12-06 23:02:37,097 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:02:37,098 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-06 23:02:37,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/data/5022613ed/d8c1f370182749aeade98783130676ef/FLAG74c46fece [2021-12-06 23:02:37,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/data/5022613ed/d8c1f370182749aeade98783130676ef [2021-12-06 23:02:37,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:02:37,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:02:37,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:02:37,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:02:37,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:02:37,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:02:37" (1/1) ... [2021-12-06 23:02:37,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730b5a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:37, skipping insertion in model container [2021-12-06 23:02:37,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:02:37" (1/1) ... [2021-12-06 23:02:37,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:02:37,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:02:38,781 WARN L230 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_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-06 23:02:38,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:02:38,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:02:39,118 WARN L230 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_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i[231089,231102] [2021-12-06 23:02:39,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:02:39,285 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:02:39,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39 WrapperNode [2021-12-06 23:02:39,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:02:39,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:02:39,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:02:39,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:02:39,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,513 INFO L137 Inliner]: procedures = 206, calls = 2928, calls flagged for inlining = 89, calls inlined = 81, statements flattened = 7883 [2021-12-06 23:02:39,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:02:39,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:02:39,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:02:39,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:02:39,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:02:39,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:02:39,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:02:39,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:02:39,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (1/1) ... [2021-12-06 23:02:39,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:02:39,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:02:39,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:02:39,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587fc9f6-2e89-45ac-a8ad-953d6a8a7bc6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:02:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2021-12-06 23:02:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2021-12-06 23:02:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-06 23:02:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-06 23:02:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2021-12-06 23:02:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2021-12-06 23:02:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-06 23:02:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-06 23:02:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2021-12-06 23:02:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2021-12-06 23:02:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:02:39,840 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-06 23:02:39,840 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-06 23:02:39,841 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-12-06 23:02:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2021-12-06 23:02:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-06 23:02:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2021-12-06 23:02:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-06 23:02:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-06 23:02:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-06 23:02:39,842 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 23:02:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-06 23:02:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-06 23:02:39,843 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-06 23:02:39,844 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-06 23:02:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-06 23:02:39,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2021-12-06 23:02:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2021-12-06 23:02:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2021-12-06 23:02:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-06 23:02:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-06 23:02:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-06 23:02:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2021-12-06 23:02:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2021-12-06 23:02:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2021-12-06 23:02:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2021-12-06 23:02:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2021-12-06 23:02:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-06 23:02:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-06 23:02:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:02:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-12-06 23:02:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-12-06 23:02:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:02:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:02:39,847 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:02:39,847 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:02:40,389 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:02:40,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:02:44,983 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:02:45,006 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:02:45,006 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:02:45,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:02:45 BoogieIcfgContainer [2021-12-06 23:02:45,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:02:45,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:02:45,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:02:45,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:02:45,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:02:37" (1/3) ... [2021-12-06 23:02:45,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b80e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:02:45, skipping insertion in model container [2021-12-06 23:02:45,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:02:39" (2/3) ... [2021-12-06 23:02:45,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b80e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:02:45, skipping insertion in model container [2021-12-06 23:02:45,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:02:45" (3/3) ... [2021-12-06 23:02:45,015 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83781d.ko-main.cil.out.i [2021-12-06 23:02:45,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:02:45,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:02:45,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:02:45,065 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 [2021-12-06 23:02:45,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:02:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2021-12-06 23:02:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:02:45,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:45,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:45,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1921795242, now seen corresponding path program 1 times [2021-12-06 23:02:45,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:45,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820102719] [2021-12-06 23:02:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:45,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 23:02:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:02:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:02:45,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:45,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820102719] [2021-12-06 23:02:45,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820102719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:45,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:02:45,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:02:45,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703400601] [2021-12-06 23:02:45,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:45,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:02:45,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:02:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:02:45,803 INFO L87 Difference]: Start difference. First operand has 1942 states, 1456 states have (on average 1.5206043956043955) internal successors, (2214), 1467 states have internal predecessors, (2214), 427 states have call successors, (427), 57 states have call predecessors, (427), 57 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:49,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:02:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:02:49,860 INFO L93 Difference]: Finished difference Result 5822 states and 9819 transitions. [2021-12-06 23:02:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:02:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2021-12-06 23:02:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:02:49,905 INFO L225 Difference]: With dead ends: 5822 [2021-12-06 23:02:49,905 INFO L226 Difference]: Without dead ends: 3875 [2021-12-06 23:02:49,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:02:49,935 INFO L933 BasicCegarLoop]: 3631 mSDtfsCounter, 3029 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 928 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 8910 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:02:49,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3289 Valid, 8910 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 851 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 23:02:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2021-12-06 23:02:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3839. [2021-12-06 23:02:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 2883 states have (on average 1.5202913631633714) internal successors, (4383), 2894 states have internal predecessors, (4383), 843 states have call successors, (843), 113 states have call predecessors, (843), 112 states have return successors, (834), 833 states have call predecessors, (834), 834 states have call successors, (834) [2021-12-06 23:02:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 6060 transitions. [2021-12-06 23:02:50,163 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 6060 transitions. Word has length 31 [2021-12-06 23:02:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:02:50,163 INFO L470 AbstractCegarLoop]: Abstraction has 3839 states and 6060 transitions. [2021-12-06 23:02:50,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 6060 transitions. [2021-12-06 23:02:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:02:50,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:50,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:50,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:02:50,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1987244376, now seen corresponding path program 1 times [2021-12-06 23:02:50,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:50,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952514462] [2021-12-06 23:02:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:50,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 23:02:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:02:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:02:50,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:50,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952514462] [2021-12-06 23:02:50,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952514462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:50,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:02:50,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:02:50,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219426251] [2021-12-06 23:02:50,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:50,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:02:50,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:02:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:02:50,545 INFO L87 Difference]: Start difference. First operand 3839 states and 6060 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:02:52,868 INFO L93 Difference]: Finished difference Result 11531 states and 18262 transitions. [2021-12-06 23:02:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:02:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-06 23:02:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:02:52,922 INFO L225 Difference]: With dead ends: 11531 [2021-12-06 23:02:52,923 INFO L226 Difference]: Without dead ends: 7695 [2021-12-06 23:02:52,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:02:52,942 INFO L933 BasicCegarLoop]: 3643 mSDtfsCounter, 3030 mSDsluCounter, 5287 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 8930 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:02:52,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 8930 Invalid, 1776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [927 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 23:02:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2021-12-06 23:02:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7643. [2021-12-06 23:02:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 5743 states have (on average 1.5202855650356957) internal successors, (8731), 5758 states have internal predecessors, (8731), 1675 states have call successors, (1675), 225 states have call predecessors, (1675), 224 states have return successors, (1666), 1663 states have call predecessors, (1666), 1666 states have call successors, (1666) [2021-12-06 23:02:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 12072 transitions. [2021-12-06 23:02:53,191 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 12072 transitions. Word has length 32 [2021-12-06 23:02:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:02:53,191 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 12072 transitions. [2021-12-06 23:02:53,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 12072 transitions. [2021-12-06 23:02:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 23:02:53,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:53,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:53,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:02:53,194 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:53,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash -886111828, now seen corresponding path program 1 times [2021-12-06 23:02:53,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:53,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010618819] [2021-12-06 23:02:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:53,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:02:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:02:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:02:53,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:53,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010618819] [2021-12-06 23:02:53,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010618819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:53,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:02:53,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:02:53,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903148761] [2021-12-06 23:02:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:53,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:02:53,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:02:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:02:53,493 INFO L87 Difference]: Start difference. First operand 7643 states and 12072 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:02:55,282 INFO L93 Difference]: Finished difference Result 22963 states and 36386 transitions. [2021-12-06 23:02:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:02:55,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-06 23:02:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:02:55,370 INFO L225 Difference]: With dead ends: 22963 [2021-12-06 23:02:55,370 INFO L226 Difference]: Without dead ends: 15323 [2021-12-06 23:02:55,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:02:55,402 INFO L933 BasicCegarLoop]: 3543 mSDtfsCounter, 3067 mSDsluCounter, 5256 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3315 SdHoareTripleChecker+Valid, 8799 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:02:55,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3315 Valid, 8799 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 23:02:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2021-12-06 23:02:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15239. [2021-12-06 23:02:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15239 states, 11453 states have (on average 1.5200384178817776) internal successors, (17409), 11476 states have internal predecessors, (17409), 3337 states have call successors, (3337), 449 states have call predecessors, (3337), 448 states have return successors, (3328), 3321 states have call predecessors, (3328), 3328 states have call successors, (3328) [2021-12-06 23:02:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15239 states to 15239 states and 24074 transitions. [2021-12-06 23:02:55,886 INFO L78 Accepts]: Start accepts. Automaton has 15239 states and 24074 transitions. Word has length 28 [2021-12-06 23:02:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:02:55,886 INFO L470 AbstractCegarLoop]: Abstraction has 15239 states and 24074 transitions. [2021-12-06 23:02:55,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15239 states and 24074 transitions. [2021-12-06 23:02:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:02:55,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:55,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:55,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:02:55,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash 409562076, now seen corresponding path program 1 times [2021-12-06 23:02:55,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:55,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790792724] [2021-12-06 23:02:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:55,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:02:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:56,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:02:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:02:56,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:56,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790792724] [2021-12-06 23:02:56,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790792724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:56,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:02:56,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:02:56,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948639254] [2021-12-06 23:02:56,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:56,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:02:56,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:02:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:02:56,161 INFO L87 Difference]: Start difference. First operand 15239 states and 24074 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:02:58,306 INFO L93 Difference]: Finished difference Result 45791 states and 72568 transitions. [2021-12-06 23:02:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:02:58,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-12-06 23:02:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:02:58,468 INFO L225 Difference]: With dead ends: 45791 [2021-12-06 23:02:58,468 INFO L226 Difference]: Without dead ends: 30555 [2021-12-06 23:02:58,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:02:58,522 INFO L933 BasicCegarLoop]: 3871 mSDtfsCounter, 3044 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 9356 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:02:58,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3292 Valid, 9356 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:02:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30555 states. [2021-12-06 23:02:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30555 to 30407. [2021-12-06 23:02:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 22853 states have (on average 1.519669190040695) internal successors, (34729), 22892 states have internal predecessors, (34729), 6657 states have call successors, (6657), 897 states have call predecessors, (6657), 896 states have return successors, (6648), 6633 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-12-06 23:02:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 48034 transitions. [2021-12-06 23:02:59,496 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 48034 transitions. Word has length 29 [2021-12-06 23:02:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:02:59,496 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 48034 transitions. [2021-12-06 23:02:59,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:02:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 48034 transitions. [2021-12-06 23:02:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:02:59,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:59,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:59,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:02:59,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash -919829617, now seen corresponding path program 1 times [2021-12-06 23:02:59,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:59,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813391888] [2021-12-06 23:02:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:59,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:02:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:02:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:02:59,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:59,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813391888] [2021-12-06 23:02:59,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813391888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:59,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:02:59,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:02:59,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536608439] [2021-12-06 23:02:59,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:59,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:02:59,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:59,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:02:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:02:59,715 INFO L87 Difference]: Start difference. First operand 30407 states and 48034 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:03:02,197 INFO L93 Difference]: Finished difference Result 91375 states and 144800 transitions. [2021-12-06 23:03:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:03:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-06 23:03:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:03:02,429 INFO L225 Difference]: With dead ends: 91375 [2021-12-06 23:03:02,429 INFO L226 Difference]: Without dead ends: 60971 [2021-12-06 23:03:02,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:02,559 INFO L933 BasicCegarLoop]: 3975 mSDtfsCounter, 3011 mSDsluCounter, 5550 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 9525 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:03:02,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3259 Valid, 9525 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 23:03:02,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60971 states. [2021-12-06 23:03:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60971 to 60695. [2021-12-06 23:03:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60695 states, 45613 states have (on average 1.5192379365531756) internal successors, (69297), 45684 states have internal predecessors, (69297), 13289 states have call successors, (13289), 1793 states have call predecessors, (13289), 1792 states have return successors, (13280), 13249 states have call predecessors, (13280), 13280 states have call successors, (13280) [2021-12-06 23:03:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60695 states to 60695 states and 95866 transitions. [2021-12-06 23:03:04,329 INFO L78 Accepts]: Start accepts. Automaton has 60695 states and 95866 transitions. Word has length 34 [2021-12-06 23:03:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:04,330 INFO L470 AbstractCegarLoop]: Abstraction has 60695 states and 95866 transitions. [2021-12-06 23:03:04,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 60695 states and 95866 transitions. [2021-12-06 23:03:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:03:04,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:04,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:04,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:03:04,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2119451473, now seen corresponding path program 1 times [2021-12-06 23:03:04,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:03:04,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941223288] [2021-12-06 23:03:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:04,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:03:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 23:03:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:03:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:04,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:03:04,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941223288] [2021-12-06 23:03:04,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941223288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:03:04,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:03:04,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:03:04,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363010973] [2021-12-06 23:03:04,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:04,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:03:04,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:03:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:03:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:03:04,538 INFO L87 Difference]: Start difference. First operand 60695 states and 95866 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:03:08,313 INFO L93 Difference]: Finished difference Result 182271 states and 288776 transitions. [2021-12-06 23:03:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:03:08,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-06 23:03:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:03:08,751 INFO L225 Difference]: With dead ends: 182271 [2021-12-06 23:03:08,751 INFO L226 Difference]: Without dead ends: 121579 [2021-12-06 23:03:08,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:08,972 INFO L933 BasicCegarLoop]: 3891 mSDtfsCounter, 3016 mSDsluCounter, 5497 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 9388 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:03:08,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3265 Valid, 9388 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:03:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2021-12-06 23:03:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121047. [2021-12-06 23:03:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121047 states, 90957 states have (on average 1.5186186879514496) internal successors, (138129), 91092 states have internal predecessors, (138129), 26505 states have call successors, (26505), 3585 states have call predecessors, (26505), 3584 states have return successors, (26496), 26433 states have call predecessors, (26496), 26496 states have call successors, (26496) [2021-12-06 23:03:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121047 states to 121047 states and 191130 transitions. [2021-12-06 23:03:12,466 INFO L78 Accepts]: Start accepts. Automaton has 121047 states and 191130 transitions. Word has length 32 [2021-12-06 23:03:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:12,467 INFO L470 AbstractCegarLoop]: Abstraction has 121047 states and 191130 transitions. [2021-12-06 23:03:12,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 121047 states and 191130 transitions. [2021-12-06 23:03:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:03:12,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:12,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:12,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:03:12,469 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:12,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2080190433, now seen corresponding path program 1 times [2021-12-06 23:03:12,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:03:12,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176942348] [2021-12-06 23:03:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:12,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:03:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:03:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:03:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:12,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:03:12,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176942348] [2021-12-06 23:03:12,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176942348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:03:12,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:03:12,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:03:12,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504369169] [2021-12-06 23:03:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:12,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:03:12,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:03:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:03:12,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:03:12,746 INFO L87 Difference]: Start difference. First operand 121047 states and 191130 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:03:18,769 INFO L93 Difference]: Finished difference Result 363775 states and 576200 transitions. [2021-12-06 23:03:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:03:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-12-06 23:03:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:03:19,721 INFO L225 Difference]: With dead ends: 363775 [2021-12-06 23:03:19,721 INFO L226 Difference]: Without dead ends: 242731 [2021-12-06 23:03:20,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:20,126 INFO L933 BasicCegarLoop]: 4091 mSDtfsCounter, 3005 mSDsluCounter, 5631 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 9722 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:03:20,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3265 Valid, 9722 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:03:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242731 states. [2021-12-06 23:03:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242731 to 241687. [2021-12-06 23:03:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241687 states, 181581 states have (on average 1.5181379109047752) internal successors, (275665), 181844 states have internal predecessors, (275665), 52937 states have call successors, (52937), 7169 states have call predecessors, (52937), 7168 states have return successors, (52928), 52801 states have call predecessors, (52928), 52928 states have call successors, (52928) [2021-12-06 23:03:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241687 states to 241687 states and 381530 transitions. [2021-12-06 23:03:27,232 INFO L78 Accepts]: Start accepts. Automaton has 241687 states and 381530 transitions. Word has length 39 [2021-12-06 23:03:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:27,233 INFO L470 AbstractCegarLoop]: Abstraction has 241687 states and 381530 transitions. [2021-12-06 23:03:27,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 241687 states and 381530 transitions. [2021-12-06 23:03:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 23:03:27,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:27,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:27,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:03:27,234 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash 218624999, now seen corresponding path program 1 times [2021-12-06 23:03:27,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:03:27,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155327197] [2021-12-06 23:03:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:27,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:03:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 23:03:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:03:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:27,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:03:27,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155327197] [2021-12-06 23:03:27,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155327197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:03:27,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:03:27,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:03:27,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728083473] [2021-12-06 23:03:27,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:27,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:03:27,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:03:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:03:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:03:27,451 INFO L87 Difference]: Start difference. First operand 241687 states and 381530 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:03:37,719 INFO L93 Difference]: Finished difference Result 725823 states and 1149320 transitions. [2021-12-06 23:03:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:03:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-12-06 23:03:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:03:39,810 INFO L225 Difference]: With dead ends: 725823 [2021-12-06 23:03:39,810 INFO L226 Difference]: Without dead ends: 484139 [2021-12-06 23:03:41,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:03:41,077 INFO L933 BasicCegarLoop]: 4100 mSDtfsCounter, 3000 mSDsluCounter, 5637 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 9737 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:03:41,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3259 Valid, 9737 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:03:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484139 states. [2021-12-06 23:03:53,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484139 to 482071. [2021-12-06 23:03:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482071 states, 362125 states have (on average 1.517489817052123) internal successors, (549521), 362644 states have internal predecessors, (549521), 105609 states have call successors, (105609), 14337 states have call predecessors, (105609), 14336 states have return successors, (105600), 105345 states have call predecessors, (105600), 105600 states have call successors, (105600) [2021-12-06 23:03:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482071 states to 482071 states and 760730 transitions. [2021-12-06 23:03:56,163 INFO L78 Accepts]: Start accepts. Automaton has 482071 states and 760730 transitions. Word has length 38 [2021-12-06 23:03:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:56,163 INFO L470 AbstractCegarLoop]: Abstraction has 482071 states and 760730 transitions. [2021-12-06 23:03:56,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:03:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 482071 states and 760730 transitions. [2021-12-06 23:03:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:03:56,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:56,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:56,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:03:56,165 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2016994239, now seen corresponding path program 1 times [2021-12-06 23:03:56,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:03:56,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351324564] [2021-12-06 23:03:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:56,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:03:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:03:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:03:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:03:56,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:03:56,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351324564] [2021-12-06 23:03:56,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351324564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:03:56,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:03:56,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:03:56,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241432966] [2021-12-06 23:03:56,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:03:56,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:03:56,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:03:56,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:03:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:03:56,393 INFO L87 Difference]: Start difference. First operand 482071 states and 760730 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:04:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:04:16,636 INFO L93 Difference]: Finished difference Result 1447743 states and 2291656 transitions. [2021-12-06 23:04:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:04:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-06 23:04:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:04:20,707 INFO L225 Difference]: With dead ends: 1447743 [2021-12-06 23:04:20,708 INFO L226 Difference]: Without dead ends: 965675 [2021-12-06 23:04:22,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:04:22,962 INFO L933 BasicCegarLoop]: 4252 mSDtfsCounter, 3001 mSDsluCounter, 5748 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3248 SdHoareTripleChecker+Valid, 10000 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:04:22,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3248 Valid, 10000 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:04:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965675 states. [2021-12-06 23:04:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965675 to 961559. [2021-12-06 23:04:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961559 states, 722189 states have (on average 1.5168342359133136) internal successors, (1095441), 723220 states have internal predecessors, (1095441), 210697 states have call successors, (210697), 28673 states have call predecessors, (210697), 28672 states have return successors, (210688), 210177 states have call predecessors, (210688), 210688 states have call successors, (210688) [2021-12-06 23:04:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961559 states to 961559 states and 1516826 transitions. [2021-12-06 23:04:54,883 INFO L78 Accepts]: Start accepts. Automaton has 961559 states and 1516826 transitions. Word has length 34 [2021-12-06 23:04:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:04:54,884 INFO L470 AbstractCegarLoop]: Abstraction has 961559 states and 1516826 transitions. [2021-12-06 23:04:54,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 23:04:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 961559 states and 1516826 transitions. [2021-12-06 23:04:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 23:04:54,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:04:54,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:04:54,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:04:54,886 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:04:54,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:04:54,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1425867462, now seen corresponding path program 1 times [2021-12-06 23:04:54,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:04:54,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121630912] [2021-12-06 23:04:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:04:54,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:04:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:04:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:04:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:04:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:04:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:04:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:04:55,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:04:55,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121630912] [2021-12-06 23:04:55,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121630912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:04:55,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:04:55,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:04:55,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290478527] [2021-12-06 23:04:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:04:55,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:04:55,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:04:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:04:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:04:55,092 INFO L87 Difference]: Start difference. First operand 961559 states and 1516826 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)