./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:31:37,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:31:37,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:31:37,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:31:37,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:31:37,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:31:37,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:31:37,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:31:37,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:31:37,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:31:37,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:31:37,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:31:37,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:31:37,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:31:37,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:31:37,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:31:37,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:31:37,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:31:37,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:31:37,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:31:37,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:31:37,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:31:37,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:31:37,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:31:37,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:31:37,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:31:37,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:31:37,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:31:37,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:31:37,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:31:37,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:31:37,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:31:37,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:31:37,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:31:37,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:31:37,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:31:37,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:31:37,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:31:37,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:31:37,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:31:37,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:31:37,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:31:37,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:31:37,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:31:37,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:31:37,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:31:37,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:31:37,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:31:37,679 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:31:37,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:31:37,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:31:37,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:31:37,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:31:37,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:31:37,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:31:37,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:31:37,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:31:37,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:31:37,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:31:37,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:31:37,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:31:37,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:31:37,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:31:37,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:31:37,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:31:37,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:31:37,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:31:37,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:31:37,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:31:37,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:31:37,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:31:37,687 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_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a [2021-11-02 22:31:37,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:31:38,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:31:38,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:31:38,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:31:38,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:31:38,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-02 22:31:38,093 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/data/654b552e2/65ecdfcf3fc34ee6bc00bcf10bcaf384/FLAGd2eff3ce0 [2021-11-02 22:31:39,213 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:31:39,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-02 22:31:39,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/data/654b552e2/65ecdfcf3fc34ee6bc00bcf10bcaf384/FLAGd2eff3ce0 [2021-11-02 22:31:39,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/data/654b552e2/65ecdfcf3fc34ee6bc00bcf10bcaf384 [2021-11-02 22:31:39,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:31:39,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:31:39,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:31:39,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:31:39,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:31:39,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:31:39" (1/1) ... [2021-11-02 22:31:39,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61191e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:39, skipping insertion in model container [2021-11-02 22:31:39,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:31:39" (1/1) ... [2021-11-02 22:31:39,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:31:39,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:31:43,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2021-11-02 22:31:43,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:31:43,290 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:31:44,420 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2021-11-02 22:31:44,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:31:44,618 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:31:44,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44 WrapperNode [2021-11-02 22:31:44,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:31:44,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:31:44,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:31:44,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:31:44,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:44,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:46,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:31:46,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:31:46,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:31:46,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:31:46,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:46,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:46,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:46,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:47,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:48,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:48,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:48,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:31:48,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:31:48,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:31:48,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:31:48,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:48,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:31:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:48,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:31:48,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b22257-be78-4064-ac4e-9c253bbe5257/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:31:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure ips_done [2021-11-02 22:31:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_done [2021-11-02 22:31:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:31:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:31:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_cmd [2021-11-02 22:31:48,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_cmd [2021-11-02 22:31:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_copperhead [2021-11-02 22:31:48,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_copperhead [2021-11-02 22:31:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure ips_hainit [2021-11-02 22:31:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_hainit [2021-11-02 22:31:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure ips_wait [2021-11-02 22:31:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_wait [2021-11-02 22:31:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure ips_readwrite_page5 [2021-11-02 22:31:48,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_readwrite_page5 [2021-11-02 22:31:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flush_and_reset [2021-11-02 22:31:48,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flush_and_reset [2021-11-02 22:31:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_wait [2021-11-02 22:31:48,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_wait [2021-11-02 22:31:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_morpheus [2021-11-02 22:31:48,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_morpheus [2021-11-02 22:31:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:31:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue_lck [2021-11-02 22:31:48,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue_lck [2021-11-02 22:31:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:31:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:31:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:31:48,687 INFO L130 BoogieDeclarations]: Found specification of procedure ips_release [2021-11-02 22:31:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_release [2021-11-02 22:31:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:31:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure ips_isinit_morpheus [2021-11-02 22:31:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_isinit_morpheus [2021-11-02 22:31:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure ips_next [2021-11-02 22:31:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_next [2021-11-02 22:31:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:31:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure ips_clear_adapter [2021-11-02 22:31:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_clear_adapter [2021-11-02 22:31:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_bios [2021-11-02 22:31:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_bios [2021-11-02 22:31:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_subsystem_parameters [2021-11-02 22:31:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_subsystem_parameters [2021-11-02 22:31:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:31:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure ips_write_driver_status [2021-11-02 22:31:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_write_driver_status [2021-11-02 22:31:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:31:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase2 [2021-11-02 22:31:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase2 [2021-11-02 22:31:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_adapter_status [2021-11-02 22:31:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_adapter_status [2021-11-02 22:31:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase1 [2021-11-02 22:31:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase1 [2021-11-02 22:31:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure ipsintr_done [2021-11-02 22:31:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ipsintr_done [2021-11-02 22:31:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure ips_insert_device [2021-11-02 22:31:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_insert_device [2021-11-02 22:31:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_config [2021-11-02 22:31:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_config [2021-11-02 22:31:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_reset [2021-11-02 22:31:48,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_reset [2021-11-02 22:31:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:31:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure ips_make_passthru [2021-11-02 22:31:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_make_passthru [2021-11-02 22:31:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead_memio [2021-11-02 22:31:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead_memio [2021-11-02 22:31:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure ips_eh_reset [2021-11-02 22:31:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_eh_reset [2021-11-02 22:31:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure __ips_eh_reset [2021-11-02 22:31:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __ips_eh_reset [2021-11-02 22:31:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:31:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:31:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 22:31:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:31:48,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:31:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 22:31:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 22:31:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure ips_remove_device [2021-11-02 22:31:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_remove_device [2021-11-02 22:31:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue [2021-11-02 22:31:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue [2021-11-02 22:31:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_morpheus [2021-11-02 22:31:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_morpheus [2021-11-02 22:31:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_time [2021-11-02 22:31:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_time [2021-11-02 22:31:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure ips_get_bios_version [2021-11-02 22:31:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_get_bios_version [2021-11-02 22:31:48,701 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead [2021-11-02 22:31:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead [2021-11-02 22:31:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 22:31:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 22:31:48,702 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_copperhead [2021-11-02 22:31:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_copperhead [2021-11-02 22:31:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:31:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 22:31:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 22:31:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:31:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:31:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:42:32,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:42:32,155 INFO L299 CfgBuilder]: Removed 6298 assume(true) statements. [2021-11-02 22:42:32,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:42:32 BoogieIcfgContainer [2021-11-02 22:42:32,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:42:32,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:42:32,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:42:32,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:42:32,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:31:39" (1/3) ... [2021-11-02 22:42:32,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a06cef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:42:32, skipping insertion in model container [2021-11-02 22:42:32,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (2/3) ... [2021-11-02 22:42:32,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a06cef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:42:32, skipping insertion in model container [2021-11-02 22:42:32,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:42:32" (3/3) ... [2021-11-02 22:42:32,178 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-02 22:42:32,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:42:32,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 22:42:32,281 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:42:32,289 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:42:32,289 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 22:42:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 8778 states, 8605 states have (on average 1.47472399767577) internal successors, (12690), 8616 states have internal predecessors, (12690), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-02 22:42:32,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:42:32,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:32,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:32,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1609733912, now seen corresponding path program 1 times [2021-11-02 22:42:32,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:32,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759695415] [2021-11-02 22:42:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:32,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:42:33,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:33,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759695415] [2021-11-02 22:42:33,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759695415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:33,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:33,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:42:33,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783601554] [2021-11-02 22:42:33,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:42:33,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:42:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:42:33,983 INFO L87 Difference]: Start difference. First operand has 8778 states, 8605 states have (on average 1.47472399767577) internal successors, (12690), 8616 states have internal predecessors, (12690), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:34,615 INFO L93 Difference]: Finished difference Result 17528 states and 25983 transitions. [2021-11-02 22:42:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:42:34,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:42:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:34,724 INFO L225 Difference]: With dead ends: 17528 [2021-11-02 22:42:34,724 INFO L226 Difference]: Without dead ends: 8466 [2021-11-02 22:42:34,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:42:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2021-11-02 22:42:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 8466. [2021-11-02 22:42:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8466 states, 8294 states have (on average 1.4475524475524475) internal successors, (12006), 8304 states have internal predecessors, (12006), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-02 22:42:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 12262 transitions. [2021-11-02 22:42:35,420 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 12262 transitions. Word has length 64 [2021-11-02 22:42:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:35,421 INFO L470 AbstractCegarLoop]: Abstraction has 8466 states and 12262 transitions. [2021-11-02 22:42:35,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 12262 transitions. [2021-11-02 22:42:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:42:35,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:35,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:35,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:42:35,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1609001254, now seen corresponding path program 1 times [2021-11-02 22:42:35,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:35,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256296583] [2021-11-02 22:42:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:35,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:42:36,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:36,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256296583] [2021-11-02 22:42:36,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256296583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:36,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:36,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:42:36,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617880721] [2021-11-02 22:42:36,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:42:36,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:42:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:36,551 INFO L87 Difference]: Start difference. First operand 8466 states and 12262 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:37,076 INFO L93 Difference]: Finished difference Result 16898 states and 24491 transitions. [2021-11-02 22:42:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:42:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:42:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:37,176 INFO L225 Difference]: With dead ends: 16898 [2021-11-02 22:42:37,176 INFO L226 Difference]: Without dead ends: 8468 [2021-11-02 22:42:37,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8468 states. [2021-11-02 22:42:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8468 to 8468. [2021-11-02 22:42:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8296 states have (on average 1.4474445515911283) internal successors, (12008), 8306 states have internal predecessors, (12008), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-02 22:42:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 12264 transitions. [2021-11-02 22:42:37,578 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 12264 transitions. Word has length 64 [2021-11-02 22:42:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:37,579 INFO L470 AbstractCegarLoop]: Abstraction has 8468 states and 12264 transitions. [2021-11-02 22:42:37,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 12264 transitions. [2021-11-02 22:42:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:42:37,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:37,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:37,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:42:37,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1818324216, now seen corresponding path program 1 times [2021-11-02 22:42:37,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:37,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803659679] [2021-11-02 22:42:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:37,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:42:38,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:38,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803659679] [2021-11-02 22:42:38,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803659679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:38,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:38,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:42:38,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911494485] [2021-11-02 22:42:38,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:42:38,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:42:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:38,400 INFO L87 Difference]: Start difference. First operand 8468 states and 12264 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:38,824 INFO L93 Difference]: Finished difference Result 16893 states and 24483 transitions. [2021-11-02 22:42:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:42:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-02 22:42:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:38,929 INFO L225 Difference]: With dead ends: 16893 [2021-11-02 22:42:38,929 INFO L226 Difference]: Without dead ends: 8469 [2021-11-02 22:42:38,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2021-11-02 22:42:39,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 8469. [2021-11-02 22:42:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8469 states, 8297 states have (on average 1.4473906231167892) internal successors, (12009), 8307 states have internal predecessors, (12009), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-02 22:42:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8469 states to 8469 states and 12265 transitions. [2021-11-02 22:42:39,323 INFO L78 Accepts]: Start accepts. Automaton has 8469 states and 12265 transitions. Word has length 66 [2021-11-02 22:42:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:39,326 INFO L470 AbstractCegarLoop]: Abstraction has 8469 states and 12265 transitions. [2021-11-02 22:42:39,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8469 states and 12265 transitions. [2021-11-02 22:42:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:42:39,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:39,334 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:39,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:42:39,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:39,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash -579385213, now seen corresponding path program 1 times [2021-11-02 22:42:39,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:39,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179180588] [2021-11-02 22:42:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:39,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:42:40,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:40,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179180588] [2021-11-02 22:42:40,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179180588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:40,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:40,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:42:40,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070617225] [2021-11-02 22:42:40,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:42:40,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:42:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:40,193 INFO L87 Difference]: Start difference. First operand 8469 states and 12265 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:41,064 INFO L93 Difference]: Finished difference Result 25062 states and 36341 transitions. [2021-11-02 22:42:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:42:41,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 22:42:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:41,191 INFO L225 Difference]: With dead ends: 25062 [2021-11-02 22:42:41,191 INFO L226 Difference]: Without dead ends: 16640 [2021-11-02 22:42:41,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16640 states. [2021-11-02 22:42:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16640 to 16629. [2021-11-02 22:42:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16629 states, 16292 states have (on average 1.4492388902528848) internal successors, (23611), 16308 states have internal predecessors, (23611), 254 states have call successors, (254), 78 states have call predecessors, (254), 78 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) [2021-11-02 22:42:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16629 states to 16629 states and 24119 transitions. [2021-11-02 22:42:41,859 INFO L78 Accepts]: Start accepts. Automaton has 16629 states and 24119 transitions. Word has length 67 [2021-11-02 22:42:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:41,861 INFO L470 AbstractCegarLoop]: Abstraction has 16629 states and 24119 transitions. [2021-11-02 22:42:41,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 16629 states and 24119 transitions. [2021-11-02 22:42:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:42:41,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:41,880 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:41,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:42:41,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -199025635, now seen corresponding path program 1 times [2021-11-02 22:42:41,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:41,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675876872] [2021-11-02 22:42:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:41,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:42:42,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:42,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675876872] [2021-11-02 22:42:42,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675876872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:42,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:42,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:42:42,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268803881] [2021-11-02 22:42:42,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:42:42,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:42:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:42,581 INFO L87 Difference]: Start difference. First operand 16629 states and 24119 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:43,982 INFO L93 Difference]: Finished difference Result 48635 states and 71095 transitions. [2021-11-02 22:42:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:42:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-02 22:42:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:44,213 INFO L225 Difference]: With dead ends: 48635 [2021-11-02 22:42:44,217 INFO L226 Difference]: Without dead ends: 32053 [2021-11-02 22:42:44,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32053 states. [2021-11-02 22:42:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32053 to 31992. [2021-11-02 22:42:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31992 states, 31346 states have (on average 1.451126140496395) internal successors, (45487), 31369 states have internal predecessors, (45487), 485 states have call successors, (485), 152 states have call predecessors, (485), 156 states have return successors, (970), 494 states have call predecessors, (970), 485 states have call successors, (970) [2021-11-02 22:42:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31992 states to 31992 states and 46942 transitions. [2021-11-02 22:42:45,609 INFO L78 Accepts]: Start accepts. Automaton has 31992 states and 46942 transitions. Word has length 84 [2021-11-02 22:42:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:45,611 INFO L470 AbstractCegarLoop]: Abstraction has 31992 states and 46942 transitions. [2021-11-02 22:42:45,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 31992 states and 46942 transitions. [2021-11-02 22:42:45,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 22:42:45,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:45,632 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:45,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:42:45,633 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1828516109, now seen corresponding path program 1 times [2021-11-02 22:42:45,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:45,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062465818] [2021-11-02 22:42:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:45,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:42:46,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:46,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062465818] [2021-11-02 22:42:46,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062465818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:46,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:46,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:42:46,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974463759] [2021-11-02 22:42:46,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:42:46,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:42:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:42:46,410 INFO L87 Difference]: Start difference. First operand 31992 states and 46942 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:49,999 INFO L93 Difference]: Finished difference Result 63943 states and 93842 transitions. [2021-11-02 22:42:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:42:50,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 22:42:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:50,183 INFO L225 Difference]: With dead ends: 63943 [2021-11-02 22:42:50,183 INFO L226 Difference]: Without dead ends: 31982 [2021-11-02 22:42:50,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:42:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31982 states. [2021-11-02 22:42:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31982 to 31982. [2021-11-02 22:42:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31982 states, 31336 states have (on average 1.4510786316058208) internal successors, (45471), 31359 states have internal predecessors, (45471), 485 states have call successors, (485), 152 states have call predecessors, (485), 156 states have return successors, (970), 494 states have call predecessors, (970), 485 states have call successors, (970) [2021-11-02 22:42:52,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31982 states to 31982 states and 46926 transitions. [2021-11-02 22:42:52,080 INFO L78 Accepts]: Start accepts. Automaton has 31982 states and 46926 transitions. Word has length 86 [2021-11-02 22:42:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:52,081 INFO L470 AbstractCegarLoop]: Abstraction has 31982 states and 46926 transitions. [2021-11-02 22:42:52,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 31982 states and 46926 transitions. [2021-11-02 22:42:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 22:42:52,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:52,112 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:52,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:42:52,113 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1841057919, now seen corresponding path program 1 times [2021-11-02 22:42:52,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:52,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104713384] [2021-11-02 22:42:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:52,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:42:52,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:52,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104713384] [2021-11-02 22:42:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104713384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:42:52,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:42:52,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:42:52,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142035543] [2021-11-02 22:42:52,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:42:52,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:42:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:52,834 INFO L87 Difference]: Start difference. First operand 31982 states and 46926 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:55,215 INFO L93 Difference]: Finished difference Result 95772 states and 140550 transitions. [2021-11-02 22:42:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:42:55,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-02 22:42:55,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:56,087 INFO L225 Difference]: With dead ends: 95772 [2021-11-02 22:42:56,087 INFO L226 Difference]: Without dead ends: 63837 [2021-11-02 22:42:56,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:42:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63837 states. [2021-11-02 22:42:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63837 to 63827. [2021-11-02 22:42:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63827 states, 62544 states have (on average 1.4512503197748785) internal successors, (90767), 62586 states have internal predecessors, (90767), 966 states have call successors, (966), 304 states have call predecessors, (966), 312 states have return successors, (1932), 984 states have call predecessors, (1932), 966 states have call successors, (1932) [2021-11-02 22:42:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63827 states to 63827 states and 93665 transitions. [2021-11-02 22:42:59,448 INFO L78 Accepts]: Start accepts. Automaton has 63827 states and 93665 transitions. Word has length 95 [2021-11-02 22:42:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:59,450 INFO L470 AbstractCegarLoop]: Abstraction has 63827 states and 93665 transitions. [2021-11-02 22:42:59,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 63827 states and 93665 transitions. [2021-11-02 22:42:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 22:42:59,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:59,478 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:42:59,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:42:59,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:42:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1359895225, now seen corresponding path program 1 times [2021-11-02 22:42:59,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:59,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690405409] [2021-11-02 22:42:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:59,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:43:00,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:00,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690405409] [2021-11-02 22:43:00,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690405409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:00,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:00,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:43:00,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377110389] [2021-11-02 22:43:00,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:43:00,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:43:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:00,420 INFO L87 Difference]: Start difference. First operand 63827 states and 93665 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:03,625 INFO L93 Difference]: Finished difference Result 132231 states and 195504 transitions. [2021-11-02 22:43:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-02 22:43:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:04,135 INFO L225 Difference]: With dead ends: 132231 [2021-11-02 22:43:04,136 INFO L226 Difference]: Without dead ends: 68451 [2021-11-02 22:43:05,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68451 states. [2021-11-02 22:43:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68451 to 63843. [2021-11-02 22:43:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63843 states, 62560 states have (on average 1.4511349104859335) internal successors, (90783), 62602 states have internal predecessors, (90783), 966 states have call successors, (966), 304 states have call predecessors, (966), 312 states have return successors, (1932), 984 states have call predecessors, (1932), 966 states have call successors, (1932) [2021-11-02 22:43:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63843 states to 63843 states and 93681 transitions. [2021-11-02 22:43:08,435 INFO L78 Accepts]: Start accepts. Automaton has 63843 states and 93681 transitions. Word has length 95 [2021-11-02 22:43:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:08,435 INFO L470 AbstractCegarLoop]: Abstraction has 63843 states and 93681 transitions. [2021-11-02 22:43:08,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 63843 states and 93681 transitions. [2021-11-02 22:43:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 22:43:08,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:08,475 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:08,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:43:08,476 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:43:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 941559241, now seen corresponding path program 1 times [2021-11-02 22:43:08,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:08,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286180577] [2021-11-02 22:43:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:08,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:43:09,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:09,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286180577] [2021-11-02 22:43:09,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286180577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:09,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:09,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:43:09,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770418795] [2021-11-02 22:43:09,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:43:09,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:43:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:09,197 INFO L87 Difference]: Start difference. First operand 63843 states and 93681 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:12,564 INFO L93 Difference]: Finished difference Result 123149 states and 182283 transitions. [2021-11-02 22:43:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-02 22:43:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:13,233 INFO L225 Difference]: With dead ends: 123149 [2021-11-02 22:43:13,234 INFO L226 Difference]: Without dead ends: 123141 [2021-11-02 22:43:13,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123141 states.