./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 9f2fac8642c25f1335350a2814ff7cf3c4ea0fb7f4feaed63baec564397e8f24 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:54:27,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:54:27,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:54:27,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:54:27,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:54:27,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:54:27,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:54:27,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:54:27,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:54:27,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:54:27,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:54:27,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:54:27,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:54:27,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:54:27,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:54:27,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:54:27,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:54:27,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:54:27,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:54:27,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:54:27,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:54:27,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:54:27,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:54:27,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:54:27,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:54:27,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:54:27,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:54:27,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:54:27,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:54:27,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:54:27,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:54:27,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:54:27,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:54:27,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:54:27,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:54:27,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:54:27,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:54:27,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:54:27,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:54:27,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:54:27,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:54:27,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:54:27,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:54:27,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:54:27,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:54:27,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:54:27,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:54:27,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:54:27,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:54:27,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:54:27,679 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:54:27,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:54:27,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:54:27,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:54:27,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:54:27,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:54:27,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:54:27,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:54:27,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:54:27,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:54:27,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:54:27,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:54:27,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:54:27,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:54:27,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:54:27,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:54:27,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:54:27,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:54:27,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:54:27,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:54:27,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:54:27,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:54:27,693 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2fac8642c25f1335350a2814ff7cf3c4ea0fb7f4feaed63baec564397e8f24 [2021-12-28 03:54:28,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:54:28,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:54:28,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:54:28,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:54:28,031 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:54:28,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2021-12-28 03:54:28,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103553ffb/e40c3a5871ca4628a741ef4b31121966/FLAGf58bb177f [2021-12-28 03:54:28,865 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:54:28,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2021-12-28 03:54:28,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103553ffb/e40c3a5871ca4628a741ef4b31121966/FLAGf58bb177f [2021-12-28 03:54:28,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103553ffb/e40c3a5871ca4628a741ef4b31121966 [2021-12-28 03:54:28,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:54:28,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:54:28,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:54:28,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:54:28,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:54:28,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:54:28" (1/1) ... [2021-12-28 03:54:28,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c05449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:28, skipping insertion in model container [2021-12-28 03:54:28,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:54:28" (1/1) ... [2021-12-28 03:54:28,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:54:29,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:54:29,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2021-12-28 03:54:30,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:54:30,355 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:54:30,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2021-12-28 03:54:30,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:54:30,811 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:54:30,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30 WrapperNode [2021-12-28 03:54:30,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:54:30,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:54:30,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:54:30,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:54:30,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:30,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,012 INFO L137 Inliner]: procedures = 163, calls = 1186, calls flagged for inlining = 76, calls inlined = 76, statements flattened = 3081 [2021-12-28 03:54:31,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:54:31,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:54:31,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:54:31,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:54:31,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:54:31,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:54:31,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:54:31,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:54:31,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (1/1) ... [2021-12-28 03:54:31,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:54:31,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:54:31,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:54:31,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-28 03:54:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-28 03:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unregister_dev [2021-12-28 03:54:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unregister_dev [2021-12-28 03:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2021-12-28 03:54:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2021-12-28 03:54:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-28 03:54:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-28 03:54:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:54:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-12-28 03:54:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-12-28 03:54:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:54:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:54:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-28 03:54:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-28 03:54:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:54:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:54:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:54:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-28 03:54:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-28 03:54:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-28 03:54:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-28 03:54:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-28 03:54:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-28 03:54:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:54:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:54:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_disconnect [2021-12-28 03:54:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_disconnect [2021-12-28 03:54:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:54:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:54:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:54:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:54:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-28 03:54:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-28 03:54:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 03:54:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 03:54:31,320 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-12-28 03:54:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-12-28 03:54:31,321 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_submit_rx_urb [2021-12-28 03:54:31,321 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_submit_rx_urb [2021-12-28 03:54:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:54:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:54:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:54:31,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:54:31,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:54:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_rx_complete [2021-12-28 03:54:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_rx_complete [2021-12-28 03:54:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-28 03:54:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-28 03:54:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-28 03:54:31,323 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-28 03:54:31,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:54:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:54:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:54:31,324 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:54:31,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:54:31,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:54:31,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:54:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:54:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:54:31,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-28 03:54:31,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-28 03:54:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-28 03:54:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-28 03:54:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:54:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-28 03:54:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-28 03:54:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 03:54:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 03:54:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:54:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:54:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:54:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:54:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_cmd_event_complete [2021-12-28 03:54:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_cmd_event_complete [2021-12-28 03:54:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2021-12-28 03:54:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2021-12-28 03:54:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:54:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-28 03:54:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-28 03:54:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2021-12-28 03:54:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2021-12-28 03:54:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:54:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:54:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_10 [2021-12-28 03:54:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_10 [2021-12-28 03:54:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:54:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:54:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-28 03:54:31,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-28 03:54:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:54:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_resume [2021-12-28 03:54:31,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_resume [2021-12-28 03:54:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-28 03:54:31,333 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-28 03:54:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-28 03:54:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-28 03:54:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:54:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-12-28 03:54:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:54:31,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:54:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:54:31,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:54:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-12-28 03:54:31,336 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-12-28 03:54:32,036 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:54:32,038 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:54:32,342 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:54:32,946 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-28 03:54:36,315 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:54:36,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:54:36,327 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:54:36,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:54:36 BoogieIcfgContainer [2021-12-28 03:54:36,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:54:36,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:54:36,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:54:36,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:54:36,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:54:28" (1/3) ... [2021-12-28 03:54:36,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287785fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:54:36, skipping insertion in model container [2021-12-28 03:54:36,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:54:30" (2/3) ... [2021-12-28 03:54:36,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287785fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:54:36, skipping insertion in model container [2021-12-28 03:54:36,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:54:36" (3/3) ... [2021-12-28 03:54:36,337 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2021-12-28 03:54:36,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:54:36,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:54:36,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:54:36,388 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 [2021-12-28 03:54:36,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:54:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 855 states, 631 states have (on average 1.3851030110935023) internal successors, (874), 657 states have internal predecessors, (874), 180 states have call successors, (180), 44 states have call predecessors, (180), 42 states have return successors, (174), 166 states have call predecessors, (174), 174 states have call successors, (174) [2021-12-28 03:54:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-28 03:54:36,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:54:36,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:54:36,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:54:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:54:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -967497407, now seen corresponding path program 1 times [2021-12-28 03:54:36,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:54:36,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76104994] [2021-12-28 03:54:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:54:36,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:54:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:54:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:54:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:54:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:54:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 03:54:36,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:54:36,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76104994] [2021-12-28 03:54:36,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76104994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:54:36,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:54:36,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:54:36,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300297368] [2021-12-28 03:54:36,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:54:36,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:54:36,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:54:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:54:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:54:36,971 INFO L87 Difference]: Start difference. First operand has 855 states, 631 states have (on average 1.3851030110935023) internal successors, (874), 657 states have internal predecessors, (874), 180 states have call successors, (180), 44 states have call predecessors, (180), 42 states have return successors, (174), 166 states have call predecessors, (174), 174 states have call successors, (174) Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 03:54:39,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:54:41,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:54:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:54:45,286 INFO L93 Difference]: Finished difference Result 2754 states and 4123 transitions. [2021-12-28 03:54:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:54:45,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-12-28 03:54:45,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:54:45,324 INFO L225 Difference]: With dead ends: 2754 [2021-12-28 03:54:45,325 INFO L226 Difference]: Without dead ends: 1880 [2021-12-28 03:54:45,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:54:45,344 INFO L933 BasicCegarLoop]: 1334 mSDtfsCounter, 1894 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 1012 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:54:45,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2047 Valid, 3388 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 1552 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-12-28 03:54:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-12-28 03:54:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1612. [2021-12-28 03:54:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1197 states have (on average 1.3751044277360067) internal successors, (1646), 1229 states have internal predecessors, (1646), 332 states have call successors, (332), 83 states have call predecessors, (332), 82 states have return successors, (327), 311 states have call predecessors, (327), 327 states have call successors, (327) [2021-12-28 03:54:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2305 transitions. [2021-12-28 03:54:45,565 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2305 transitions. Word has length 44 [2021-12-28 03:54:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:54:45,566 INFO L470 AbstractCegarLoop]: Abstraction has 1612 states and 2305 transitions. [2021-12-28 03:54:45,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 03:54:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2305 transitions. [2021-12-28 03:54:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-28 03:54:45,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:54:45,573 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:54:45,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:54:45,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:54:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:54:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1415687837, now seen corresponding path program 1 times [2021-12-28 03:54:45,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:54:45,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122455376] [2021-12-28 03:54:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:54:45,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:54:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:54:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:54:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:54:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:54:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:54:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:54:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:54:46,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:54:46,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122455376] [2021-12-28 03:54:46,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122455376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:54:46,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:54:46,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:54:46,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871996507] [2021-12-28 03:54:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:54:46,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:54:46,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:54:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:54:46,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:54:46,030 INFO L87 Difference]: Start difference. First operand 1612 states and 2305 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:54:48,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:54:50,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:54:53,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:54:55,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:54:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:54:58,405 INFO L93 Difference]: Finished difference Result 5349 states and 7945 transitions. [2021-12-28 03:54:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:54:58,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-12-28 03:54:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:54:58,432 INFO L225 Difference]: With dead ends: 5349 [2021-12-28 03:54:58,433 INFO L226 Difference]: Without dead ends: 3748 [2021-12-28 03:54:58,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:54:58,444 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 1948 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 1008 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:54:58,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2078 Valid, 3472 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 1574 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2021-12-28 03:54:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2021-12-28 03:54:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3286. [2021-12-28 03:54:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 2434 states have (on average 1.3697617091207888) internal successors, (3334), 2504 states have internal predecessors, (3334), 671 states have call successors, (671), 165 states have call predecessors, (671), 180 states have return successors, (762), 642 states have call predecessors, (762), 666 states have call successors, (762) [2021-12-28 03:54:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4767 transitions. [2021-12-28 03:54:58,656 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4767 transitions. Word has length 61 [2021-12-28 03:54:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:54:58,657 INFO L470 AbstractCegarLoop]: Abstraction has 3286 states and 4767 transitions. [2021-12-28 03:54:58,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:54:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4767 transitions. [2021-12-28 03:54:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 03:54:58,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:54:58,663 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:54:58,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:54:58,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:54:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:54:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -937016713, now seen corresponding path program 1 times [2021-12-28 03:54:58,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:54:58,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954239166] [2021-12-28 03:54:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:54:58,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:54:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:54:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:54:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:54:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:54:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:54:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:54:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:54:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:54:59,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:54:59,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954239166] [2021-12-28 03:54:59,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954239166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:54:59,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:54:59,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:54:59,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246458959] [2021-12-28 03:54:59,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:54:59,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:54:59,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:54:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:54:59,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:54:59,009 INFO L87 Difference]: Start difference. First operand 3286 states and 4767 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:55:01,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:03,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:07,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:09,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:11,090 INFO L93 Difference]: Finished difference Result 10731 states and 16197 transitions. [2021-12-28 03:55:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:55:11,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2021-12-28 03:55:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:11,140 INFO L225 Difference]: With dead ends: 10731 [2021-12-28 03:55:11,140 INFO L226 Difference]: Without dead ends: 7456 [2021-12-28 03:55:11,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:55:11,159 INFO L933 BasicCegarLoop]: 1304 mSDtfsCounter, 2006 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 1034 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:11,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 3324 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1034 Valid, 1528 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2021-12-28 03:55:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2021-12-28 03:55:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 6627. [2021-12-28 03:55:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 4901 states have (on average 1.3650275453988983) internal successors, (6690), 5047 states have internal predecessors, (6690), 1349 states have call successors, (1349), 329 states have call predecessors, (1349), 376 states have return successors, (1702), 1304 states have call predecessors, (1702), 1344 states have call successors, (1702) [2021-12-28 03:55:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 9741 transitions. [2021-12-28 03:55:11,465 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 9741 transitions. Word has length 62 [2021-12-28 03:55:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:11,467 INFO L470 AbstractCegarLoop]: Abstraction has 6627 states and 9741 transitions. [2021-12-28 03:55:11,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:55:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 9741 transitions. [2021-12-28 03:55:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 03:55:11,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:11,471 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:11,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:55:11,471 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1016891110, now seen corresponding path program 1 times [2021-12-28 03:55:11,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:11,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747427970] [2021-12-28 03:55:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:11,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:55:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:55:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:55:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:55:11,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:11,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747427970] [2021-12-28 03:55:11,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747427970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:11,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:11,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:11,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510884307] [2021-12-28 03:55:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:11,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:11,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:11,792 INFO L87 Difference]: Start difference. First operand 6627 states and 9741 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:55:13,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:15,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:19,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:21,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:23,489 INFO L93 Difference]: Finished difference Result 7454 states and 11168 transitions. [2021-12-28 03:55:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:55:23,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2021-12-28 03:55:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:23,539 INFO L225 Difference]: With dead ends: 7454 [2021-12-28 03:55:23,539 INFO L226 Difference]: Without dead ends: 7451 [2021-12-28 03:55:23,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:55:23,549 INFO L933 BasicCegarLoop]: 1305 mSDtfsCounter, 2003 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 1025 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:23,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2141 Valid, 3328 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 1518 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2021-12-28 03:55:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2021-12-28 03:55:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 6628. [2021-12-28 03:55:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6628 states, 4902 states have (on average 1.364953080375357) internal successors, (6691), 5048 states have internal predecessors, (6691), 1349 states have call successors, (1349), 329 states have call predecessors, (1349), 376 states have return successors, (1702), 1304 states have call predecessors, (1702), 1344 states have call successors, (1702) [2021-12-28 03:55:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 9742 transitions. [2021-12-28 03:55:23,882 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 9742 transitions. Word has length 63 [2021-12-28 03:55:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:23,884 INFO L470 AbstractCegarLoop]: Abstraction has 6628 states and 9742 transitions. [2021-12-28 03:55:23,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:55:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 9742 transitions. [2021-12-28 03:55:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 03:55:23,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:23,888 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:23,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:55:23,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1458496346, now seen corresponding path program 1 times [2021-12-28 03:55:23,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:23,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803878724] [2021-12-28 03:55:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:23,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:55:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:55:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:55:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 03:55:24,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:24,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803878724] [2021-12-28 03:55:24,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803878724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:24,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:24,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:24,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110407157] [2021-12-28 03:55:24,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:24,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:24,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:24,121 INFO L87 Difference]: Start difference. First operand 6628 states and 9742 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:55:26,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:28,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:30,580 INFO L93 Difference]: Finished difference Result 7450 states and 11164 transitions. [2021-12-28 03:55:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:55:30,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2021-12-28 03:55:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:30,641 INFO L225 Difference]: With dead ends: 7450 [2021-12-28 03:55:30,642 INFO L226 Difference]: Without dead ends: 7447 [2021-12-28 03:55:30,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:55:30,651 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 1541 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 573 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:30,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 2215 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 795 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-12-28 03:55:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2021-12-28 03:55:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 6627. [2021-12-28 03:55:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 4902 states have (on average 1.364749082007344) internal successors, (6690), 5047 states have internal predecessors, (6690), 1348 states have call successors, (1348), 329 states have call predecessors, (1348), 376 states have return successors, (1702), 1304 states have call predecessors, (1702), 1344 states have call successors, (1702) [2021-12-28 03:55:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 9740 transitions. [2021-12-28 03:55:30,943 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 9740 transitions. Word has length 64 [2021-12-28 03:55:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:30,944 INFO L470 AbstractCegarLoop]: Abstraction has 6627 states and 9740 transitions. [2021-12-28 03:55:30,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 03:55:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 9740 transitions. [2021-12-28 03:55:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 03:55:30,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:30,946 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:55:30,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:55:30,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2031605655, now seen corresponding path program 1 times [2021-12-28 03:55:30,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:30,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493926999] [2021-12-28 03:55:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:30,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14