./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--w83792d.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_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/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_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/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_81588b05-9fc1-423a-8eeb-3ad96906551f/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 e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:41:33,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:41:33,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:41:33,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:41:33,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:41:33,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:41:33,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:41:33,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:41:33,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:41:33,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:41:33,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:41:33,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:41:33,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:41:33,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:41:33,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:41:33,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:41:33,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:41:33,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:41:33,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:41:33,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:41:33,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:41:33,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:41:33,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:41:33,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:41:33,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:41:33,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:41:33,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:41:33,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:41:33,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:41:33,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:41:33,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:41:33,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:41:33,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:41:33,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:41:33,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:41:33,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:41:33,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:41:33,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:41:33,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:41:33,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:41:33,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:41:33,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:41:33,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:41:33,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:41:33,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:41:33,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:41:33,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:41:33,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:41:33,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:41:33,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:41:33,646 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:41:33,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:41:33,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:41:33,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:41:33,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:41:33,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:41:33,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:41:33,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:41:33,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:41:33,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:41:33,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:41:33,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:41:33,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:41:33,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:41:33,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:41:33,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:41:33,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:41:33,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:41:33,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:41:33,649 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:41:33,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:41:33,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:41:33,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:41:33,650 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_81588b05-9fc1-423a-8eeb-3ad96906551f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-12-06 23:41:33,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:41:33,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:41:33,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:41:33,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:41:33,837 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:41:33,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-06 23:41:33,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/data/1a9559196/02d31a41330f4c53bb336671624922ce/FLAG1bf7d6f77 [2021-12-06 23:41:34,453 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:41:34,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-06 23:41:34,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/data/1a9559196/02d31a41330f4c53bb336671624922ce/FLAG1bf7d6f77 [2021-12-06 23:41:34,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/data/1a9559196/02d31a41330f4c53bb336671624922ce [2021-12-06 23:41:34,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:41:34,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:41:34,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:41:34,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:41:34,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:41:34,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:41:34" (1/1) ... [2021-12-06 23:41:34,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727b86c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:34, skipping insertion in model container [2021-12-06 23:41:34,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:41:34" (1/1) ... [2021-12-06 23:41:34,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:41:35,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:41:36,018 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_81588b05-9fc1-423a-8eeb-3ad96906551f/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-12-06 23:41:36,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:41:36,178 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:41:36,380 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_81588b05-9fc1-423a-8eeb-3ad96906551f/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-12-06 23:41:36,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:41:36,588 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:41:36,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36 WrapperNode [2021-12-06 23:41:36,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:41:36,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:41:36,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:41:36,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:41:36,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:36,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:36,873 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-12-06 23:41:36,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:41:36,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:41:36,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:41:36,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:41:36,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:36,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:36,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:37,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:37,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:37,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:37,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:41:37,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:41:37,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:41:37,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:41:37,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (1/1) ... [2021-12-06 23:41:37,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:41:37,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:41:37,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:41:37,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81588b05-9fc1-423a-8eeb-3ad96906551f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:41:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-12-06 23:41:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-12-06 23:41:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-12-06 23:41:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-12-06 23:41:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-12-06 23:41:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-12-06 23:41:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-12-06 23:41:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-12-06 23:41:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-06 23:41:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-06 23:41:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:41:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-12-06 23:41:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-12-06 23:41:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-06 23:41:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-06 23:41:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-12-06 23:41:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-12-06 23:41:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-12-06 23:41:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-12-06 23:41:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-06 23:41:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-12-06 23:41:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-12-06 23:41:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-12-06 23:41:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:41:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:41:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-12-06 23:41:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-12-06 23:41:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-12-06 23:41:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-12-06 23:41:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-06 23:41:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-12-06 23:41:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-12-06 23:41:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-12-06 23:41:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-12-06 23:41:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-12-06 23:41:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-12-06 23:41:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-12-06 23:41:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-12-06 23:41:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-12-06 23:41:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-12-06 23:41:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-12-06 23:41:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:41:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 23:41:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 23:41:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:41:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:41:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-12-06 23:41:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-12-06 23:41:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:41:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:41:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:41:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 23:41:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 23:41:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-12-06 23:41:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-12-06 23:41:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:41:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-12-06 23:41:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-12-06 23:41:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-12-06 23:41:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-12-06 23:41:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-12-06 23:41:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-12-06 23:41:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-12-06 23:41:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-12-06 23:41:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:41:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-12-06 23:41:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-12-06 23:41:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:41:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-12-06 23:41:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-12-06 23:41:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-12-06 23:41:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-12-06 23:41:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-12-06 23:41:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-12-06 23:41:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-12-06 23:41:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-12-06 23:41:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-12-06 23:41:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-12-06 23:41:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-12-06 23:41:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-12-06 23:41:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-12-06 23:41:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-12-06 23:41:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:41:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-12-06 23:41:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-12-06 23:41:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-12-06 23:41:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-12-06 23:41:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-12-06 23:41:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-12-06 23:41:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:41:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-12-06 23:41:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-12-06 23:41:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:41:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-12-06 23:41:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-12-06 23:41:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-12-06 23:41:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-12-06 23:41:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-06 23:41:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-06 23:41:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-12-06 23:41:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-12-06 23:41:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-12-06 23:41:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-12-06 23:41:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-12-06 23:41:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-12-06 23:41:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-12-06 23:41:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-12-06 23:41:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:41:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-12-06 23:41:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-12-06 23:41:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:41:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:41:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 23:41:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 23:41:37,685 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:41:37,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:41:44,374 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:41:44,392 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:41:44,392 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:41:44,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:41:44 BoogieIcfgContainer [2021-12-06 23:41:44,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:41:44,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:41:44,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:41:44,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:41:44,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:41:34" (1/3) ... [2021-12-06 23:41:44,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ce2e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:41:44, skipping insertion in model container [2021-12-06 23:41:44,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:36" (2/3) ... [2021-12-06 23:41:44,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ce2e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:41:44, skipping insertion in model container [2021-12-06 23:41:44,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:41:44" (3/3) ... [2021-12-06 23:41:44,402 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-12-06 23:41:44,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:41:44,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:41:44,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:41:44,452 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 23:41:44,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:41:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-06 23:41:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:41:44,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:44,504 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 23:41:44,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-12-06 23:41:44,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:44,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341841057] [2021-12-06 23:41:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:44,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 23:41:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:41:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:45,282 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 23:41:45,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:45,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341841057] [2021-12-06 23:41:45,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341841057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:45,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:45,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:45,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842447421] [2021-12-06 23:41:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:45,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:45,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:45,313 INFO L87 Difference]: Start difference. First operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) 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 23:41:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:47,263 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-12-06 23:41:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:47,265 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 23:41:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:47,300 INFO L225 Difference]: With dead ends: 6329 [2021-12-06 23:41:47,300 INFO L226 Difference]: Without dead ends: 4215 [2021-12-06 23:41:47,325 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 23:41:47,327 INFO L933 BasicCegarLoop]: 3755 mSDtfsCounter, 3309 mSDsluCounter, 6014 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9769 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:47,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9769 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:41:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-12-06 23:41:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-12-06 23:41:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 3228 states have (on average 1.5412019826517969) internal successors, (4975), 3233 states have internal predecessors, (4975), 853 states have call successors, (853), 101 states have call predecessors, (853), 100 states have return successors, (847), 847 states have call predecessors, (847), 847 states have call successors, (847) [2021-12-06 23:41:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-12-06 23:41:47,551 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-12-06 23:41:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:47,552 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-12-06 23:41:47,552 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 23:41:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-12-06 23:41:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:41:47,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:47,555 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] [2021-12-06 23:41:47,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:41:47,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-12-06 23:41:47,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:47,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239676246] [2021-12-06 23:41:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:47,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 23:41:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:41:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:47,934 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 23:41:47,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:47,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239676246] [2021-12-06 23:41:47,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239676246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:47,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:47,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:47,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783639813] [2021-12-06 23:41:47,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:47,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:47,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:47,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:47,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:47,938 INFO L87 Difference]: Start difference. First operand 4182 states and 6675 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 23:41:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:49,926 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-12-06 23:41:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:49,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 33 [2021-12-06 23:41:49,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:49,981 INFO L225 Difference]: With dead ends: 12564 [2021-12-06 23:41:49,982 INFO L226 Difference]: Without dead ends: 8385 [2021-12-06 23:41:49,999 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 23:41:50,001 INFO L933 BasicCegarLoop]: 3730 mSDtfsCounter, 3304 mSDsluCounter, 5969 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3522 SdHoareTripleChecker+Valid, 9699 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:50,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3522 Valid, 9699 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 23:41:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-12-06 23:41:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-12-06 23:41:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8334 states, 6435 states have (on average 1.5412587412587413) internal successors, (9918), 6440 states have internal predecessors, (9918), 1698 states have call successors, (1698), 201 states have call predecessors, (1698), 200 states have return successors, (1692), 1692 states have call predecessors, (1692), 1692 states have call successors, (1692) [2021-12-06 23:41:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-12-06 23:41:50,270 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-12-06 23:41:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:50,270 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-12-06 23:41:50,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 23:41:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-12-06 23:41:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:41:50,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:50,273 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] [2021-12-06 23:41:50,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:41:50,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:50,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-12-06 23:41:50,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:50,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140535500] [2021-12-06 23:41:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:50,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:41:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:41:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:50,620 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 23:41:50,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:50,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140535500] [2021-12-06 23:41:50,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140535500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:50,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:50,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:50,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535457072] [2021-12-06 23:41:50,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:50,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:50,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:50,623 INFO L87 Difference]: Start difference. First operand 8334 states and 13308 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 23:41:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:52,309 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-12-06 23:41:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:52,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 37 [2021-12-06 23:41:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:52,408 INFO L225 Difference]: With dead ends: 25028 [2021-12-06 23:41:52,408 INFO L226 Difference]: Without dead ends: 16697 [2021-12-06 23:41:52,447 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 23:41:52,448 INFO L933 BasicCegarLoop]: 3755 mSDtfsCounter, 3294 mSDsluCounter, 6006 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9761 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:52,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9761 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 23:41:52,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-12-06 23:41:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-12-06 23:41:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 12827 states have (on average 1.540968270055352) internal successors, (19766), 12832 states have internal predecessors, (19766), 3382 states have call successors, (3382), 401 states have call predecessors, (3382), 400 states have return successors, (3376), 3376 states have call predecessors, (3376), 3376 states have call successors, (3376) [2021-12-06 23:41:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-12-06 23:41:53,009 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-12-06 23:41:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:53,009 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-12-06 23:41:53,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 23:41:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-12-06 23:41:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:41:53,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:53,011 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 23:41:53,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:41:53,011 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-12-06 23:41:53,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:53,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867199588] [2021-12-06 23:41:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:53,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 23:41:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:41:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:53,361 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 23:41:53,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867199588] [2021-12-06 23:41:53,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867199588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:53,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:53,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:53,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080832736] [2021-12-06 23:41:53,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:53,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:53,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:53,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:53,364 INFO L87 Difference]: Start difference. First operand 16610 states and 26524 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 23:41:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:55,217 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-12-06 23:41:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:55,218 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 23:41:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:55,333 INFO L225 Difference]: With dead ends: 49920 [2021-12-06 23:41:55,333 INFO L226 Difference]: Without dead ends: 33313 [2021-12-06 23:41:55,377 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 23:41:55,378 INFO L933 BasicCegarLoop]: 3772 mSDtfsCounter, 3303 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 9780 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:55,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3505 Valid, 9780 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 23:41:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-12-06 23:41:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-12-06 23:41:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33154 states, 25603 states have (on average 1.540678826699996) internal successors, (39446), 25608 states have internal predecessors, (39446), 6750 states have call successors, (6750), 801 states have call predecessors, (6750), 800 states have return successors, (6744), 6744 states have call predecessors, (6744), 6744 states have call successors, (6744) [2021-12-06 23:41:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-12-06 23:41:56,323 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-12-06 23:41:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:56,324 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-12-06 23:41:56,324 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 23:41:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-12-06 23:41:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:41:56,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:56,325 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] [2021-12-06 23:41:56,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:41:56,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-12-06 23:41:56,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:56,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515552003] [2021-12-06 23:41:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:56,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:41:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:41:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:56,642 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 23:41:56,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:56,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515552003] [2021-12-06 23:41:56,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515552003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:56,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:56,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:56,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720009997] [2021-12-06 23:41:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:56,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:56,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:56,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:56,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:56,644 INFO L87 Difference]: Start difference. First operand 33154 states and 52940 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 23:41:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:58,969 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-12-06 23:41:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 36 [2021-12-06 23:41:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:59,218 INFO L225 Difference]: With dead ends: 99584 [2021-12-06 23:41:59,219 INFO L226 Difference]: Without dead ends: 66433 [2021-12-06 23:41:59,298 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 23:41:59,299 INFO L933 BasicCegarLoop]: 3781 mSDtfsCounter, 3295 mSDsluCounter, 6029 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 9810 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:59,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3513 Valid, 9810 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 23:41:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-12-06 23:42:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-12-06 23:42:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66130 states, 51067 states have (on average 1.5402118785125423) internal successors, (78654), 51072 states have internal predecessors, (78654), 13462 states have call successors, (13462), 1601 states have call predecessors, (13462), 1600 states have return successors, (13456), 13456 states have call predecessors, (13456), 13456 states have call successors, (13456) [2021-12-06 23:42:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-12-06 23:42:00,970 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-12-06 23:42:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:00,971 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-12-06 23:42:00,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 23:42:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-12-06 23:42:00,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 23:42:00,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:00,972 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] [2021-12-06 23:42:00,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:42:00,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:00,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-12-06 23:42:00,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:42:00,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026814713] [2021-12-06 23:42:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:00,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:42:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:42:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:42:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:01,281 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 23:42:01,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:42:01,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026814713] [2021-12-06 23:42:01,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026814713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:01,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:01,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:01,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788434612] [2021-12-06 23:42:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:01,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:01,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:42:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:01,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:01,284 INFO L87 Difference]: Start difference. First operand 66130 states and 105572 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 23:42:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:04,610 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-12-06 23:42:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:42:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 30 [2021-12-06 23:42:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:05,130 INFO L225 Difference]: With dead ends: 198640 [2021-12-06 23:42:05,131 INFO L226 Difference]: Without dead ends: 132513 [2021-12-06 23:42:05,330 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 23:42:05,331 INFO L933 BasicCegarLoop]: 3785 mSDtfsCounter, 3301 mSDsluCounter, 6012 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3519 SdHoareTripleChecker+Valid, 9797 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:05,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3519 Valid, 9797 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 23:42:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-12-06 23:42:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-12-06 23:42:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131922 states, 101867 states have (on average 1.5397135480577615) internal successors, (156846), 101872 states have internal predecessors, (156846), 26854 states have call successors, (26854), 3201 states have call predecessors, (26854), 3200 states have return successors, (26848), 26848 states have call predecessors, (26848), 26848 states have call successors, (26848) [2021-12-06 23:42:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-12-06 23:42:08,749 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-12-06 23:42:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:08,750 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-12-06 23:42:08,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 23:42:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-12-06 23:42:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:42:08,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:08,751 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 23:42:08,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:42:08,752 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-12-06 23:42:08,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:42:08,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7607173] [2021-12-06 23:42:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:08,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:42:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 23:42:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:42:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:09,051 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 23:42:09,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:42:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7607173] [2021-12-06 23:42:09,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7607173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:09,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:09,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:09,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115787496] [2021-12-06 23:42:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:09,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:09,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:42:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:09,053 INFO L87 Difference]: Start difference. First operand 131922 states and 210548 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 23:42:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:14,667 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-12-06 23:42:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:42:14,667 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 23:42:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:15,680 INFO L225 Difference]: With dead ends: 396272 [2021-12-06 23:42:15,680 INFO L226 Difference]: Without dead ends: 264353 [2021-12-06 23:42:16,181 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 23:42:16,182 INFO L933 BasicCegarLoop]: 3852 mSDtfsCounter, 3289 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3492 SdHoareTripleChecker+Valid, 9912 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:16,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3492 Valid, 9912 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 23:42:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states. [2021-12-06 23:42:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264353 to 263186. [2021-12-06 23:42:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263186 states, 203211 states have (on average 1.5391981733272313) internal successors, (312782), 203216 states have internal predecessors, (312782), 53574 states have call successors, (53574), 6401 states have call predecessors, (53574), 6400 states have return successors, (53568), 53568 states have call predecessors, (53568), 53568 states have call successors, (53568) [2021-12-06 23:42:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263186 states to 263186 states and 419924 transitions. [2021-12-06 23:42:23,429 INFO L78 Accepts]: Start accepts. Automaton has 263186 states and 419924 transitions. Word has length 32 [2021-12-06 23:42:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:23,429 INFO L470 AbstractCegarLoop]: Abstraction has 263186 states and 419924 transitions. [2021-12-06 23:42:23,429 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 23:42:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 263186 states and 419924 transitions. [2021-12-06 23:42:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:42:23,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:23,430 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 23:42:23,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:42:23,430 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 393190319, now seen corresponding path program 1 times [2021-12-06 23:42:23,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:42:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483298047] [2021-12-06 23:42:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:23,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:42:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:42:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:42:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:23,694 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 23:42:23,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:42:23,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483298047] [2021-12-06 23:42:23,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483298047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:23,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:23,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:23,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660233293] [2021-12-06 23:42:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:23,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:23,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:42:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:23,696 INFO L87 Difference]: Start difference. First operand 263186 states and 419924 transitions. 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 23:42:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:33,117 INFO L93 Difference]: Finished difference Result 790576 states and 1265014 transitions. [2021-12-06 23:42:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:42:33,118 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 23:42:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:35,234 INFO L225 Difference]: With dead ends: 790576 [2021-12-06 23:42:35,234 INFO L226 Difference]: Without dead ends: 527393 [2021-12-06 23:42:36,167 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 23:42:36,168 INFO L933 BasicCegarLoop]: 3869 mSDtfsCounter, 3300 mSDsluCounter, 6069 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 9938 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:36,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3518 Valid, 9938 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 23:42:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527393 states. [2021-12-06 23:42:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527393 to 525074. [2021-12-06 23:42:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525074 states, 405387 states have (on average 1.5386729224173443) internal successors, (623758), 405392 states have internal predecessors, (623758), 106886 states have call successors, (106886), 12801 states have call predecessors, (106886), 12800 states have return successors, (106880), 106880 states have call predecessors, (106880), 106880 states have call successors, (106880) [2021-12-06 23:42:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525074 states to 525074 states and 837524 transitions. [2021-12-06 23:42:51,183 INFO L78 Accepts]: Start accepts. Automaton has 525074 states and 837524 transitions. Word has length 31 [2021-12-06 23:42:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:51,184 INFO L470 AbstractCegarLoop]: Abstraction has 525074 states and 837524 transitions. [2021-12-06 23:42:51,184 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 23:42:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 525074 states and 837524 transitions. [2021-12-06 23:42:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 23:42:51,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:51,186 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] [2021-12-06 23:42:51,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:42:51,186 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -395662388, now seen corresponding path program 1 times [2021-12-06 23:42:51,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:42:51,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256372727] [2021-12-06 23:42:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:51,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:42:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:42:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:42:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:51,460 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 23:42:51,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:42:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256372727] [2021-12-06 23:42:51,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256372727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:51,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:51,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:51,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910886855] [2021-12-06 23:42:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:51,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:51,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:42:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:51,462 INFO L87 Difference]: Start difference. First operand 525074 states and 837524 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (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 23:43:09,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:09,544 INFO L93 Difference]: Finished difference Result 1578288 states and 2524854 transitions. [2021-12-06 23:43:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:43:09,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (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 40 [2021-12-06 23:43:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:13,841 INFO L225 Difference]: With dead ends: 1578288 [2021-12-06 23:43:13,841 INFO L226 Difference]: Without dead ends: 1053217 [2021-12-06 23:43:16,444 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 23:43:16,445 INFO L933 BasicCegarLoop]: 4439 mSDtfsCounter, 3269 mSDsluCounter, 6472 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3477 SdHoareTripleChecker+Valid, 10911 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:16,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3477 Valid, 10911 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:43:17,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053217 states. [2021-12-06 23:43:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053217 to 1048594. [2021-12-06 23:43:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048594 states, 809483 states have (on average 1.538263311273986) internal successors, (1245198), 809488 states have internal predecessors, (1245198), 213510 states have call successors, (213510), 25601 states have call predecessors, (213510), 25600 states have return successors, (213504), 213504 states have call predecessors, (213504), 213504 states have call successors, (213504) [2021-12-06 23:43:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048594 states to 1048594 states and 1672212 transitions. [2021-12-06 23:43:46,759 INFO L78 Accepts]: Start accepts. Automaton has 1048594 states and 1672212 transitions. Word has length 40 [2021-12-06 23:43:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:46,759 INFO L470 AbstractCegarLoop]: Abstraction has 1048594 states and 1672212 transitions. [2021-12-06 23:43:46,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (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 23:43:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1048594 states and 1672212 transitions. [2021-12-06 23:43:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 23:43:46,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:46,761 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 23:43:46,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:43:46,761 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 859197427, now seen corresponding path program 1 times [2021-12-06 23:43:46,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:43:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466284836] [2021-12-06 23:43:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:46,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:43:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 23:43:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:43:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:46,993 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 23:43:46,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:43:46,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466284836] [2021-12-06 23:43:46,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466284836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:46,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:46,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:46,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311673736] [2021-12-06 23:43:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:46,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:46,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:43:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:46,995 INFO L87 Difference]: Start difference. First operand 1048594 states and 1672212 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)