./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--net--irda--vlsi_ir.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:45:01,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:45:01,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:45:01,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:45:01,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:45:01,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:45:01,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:45:01,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:45:01,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:45:01,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:45:01,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:45:01,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:45:01,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:45:01,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:45:01,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:45:01,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:45:01,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:45:01,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:45:01,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:45:01,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:45:01,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:45:01,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:45:01,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:45:01,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:45:01,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:45:01,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:45:01,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:45:01,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:45:01,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:45:01,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:45:01,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:45:01,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:45:01,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:45:01,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:45:01,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:45:01,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:45:01,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:45:01,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:45:01,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:45:01,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:45:01,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:45:01,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:45:01,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:45:01,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:45:01,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:45:01,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:45:01,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:45:01,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:45:01,697 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:45:01,697 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:45:01,697 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:45:01,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:45:01,698 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:45:01,699 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:45:01,699 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:45:01,699 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:45:01,699 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:45:01,700 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:45:01,700 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:45:01,700 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:45:01,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:45:01,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:45:01,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:45:01,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:45:01,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:45:01,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:45:01,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:45:01,704 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:45:01,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:45:01,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:45:01,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:45:01,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:01,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:45:01,705 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:45:01,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:45:01,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:45:01,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:45:01,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:45:01,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:45:01,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:45:01,707 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_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2022-11-19 07:45:02,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:45:02,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:45:02,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:45:02,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:45:02,068 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:45:02,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-19 07:45:02,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/data/eef80976c/a80e0440a1514b11be8e7e5f0b868094/FLAGc0623c53d [2022-11-19 07:45:03,188 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:45:03,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-19 07:45:03,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/data/eef80976c/a80e0440a1514b11be8e7e5f0b868094/FLAGc0623c53d [2022-11-19 07:45:03,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/data/eef80976c/a80e0440a1514b11be8e7e5f0b868094 [2022-11-19 07:45:03,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:45:03,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:45:03,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:03,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:45:03,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:45:03,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d32722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03, skipping insertion in model container [2022-11-19 07:45:03,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:45:03,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:45:06,071 WARN L234 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_9fbc0986-a32b-4955-855c-d888c4f172e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-11-19 07:45:06,138 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-19 07:45:06,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:06,200 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:45:06,624 WARN L234 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_9fbc0986-a32b-4955-855c-d888c4f172e3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2022-11-19 07:45:06,628 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-19 07:45:06,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:06,778 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:45:06,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06 WrapperNode [2022-11-19 07:45:06,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:06,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:45:06,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:45:06,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:45:06,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:06,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,041 INFO L138 Inliner]: procedures = 275, calls = 2222, calls flagged for inlining = 131, calls inlined = 123, statements flattened = 4853 [2022-11-19 07:45:07,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:45:07,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:45:07,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:45:07,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:45:07,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:45:07,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:45:07,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:45:07,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:45:07,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (1/1) ... [2022-11-19 07:45:07,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:07,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:45:07,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:45:07,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:45:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 07:45:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 07:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2022-11-19 07:45:07,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2022-11-19 07:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:45:07,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:45:07,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:45:07,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:45:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 07:45:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 07:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-11-19 07:45:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-11-19 07:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:45:07,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-19 07:45:07,474 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-19 07:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-11-19 07:45:07,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-11-19 07:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:45:07,475 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-11-19 07:45:07,475 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-11-19 07:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-19 07:45:07,476 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-19 07:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:45:07,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:45:07,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-11-19 07:45:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-11-19 07:45:07,477 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:45:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:45:07,477 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 07:45:07,477 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 07:45:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:45:07,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:45:07,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:45:07,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:45:07,479 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:45:07,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:45:07,480 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 07:45:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 07:45:07,481 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2022-11-19 07:45:07,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2022-11-19 07:45:07,482 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-11-19 07:45:07,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-11-19 07:45:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:45:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:45:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:45:07,483 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-11-19 07:45:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-11-19 07:45:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:45:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:45:07,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:45:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-19 07:45:07,486 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-19 07:45:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2022-11-19 07:45:07,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2022-11-19 07:45:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:45:07,486 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:45:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-11-19 07:45:07,487 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-11-19 07:45:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-11-19 07:45:07,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-11-19 07:45:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 07:45:07,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 07:45:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:45:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-11-19 07:45:07,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-11-19 07:45:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-19 07:45:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-19 07:45:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:45:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 07:45:07,490 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 07:45:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-19 07:45:07,492 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-19 07:45:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:45:07,492 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:45:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-11-19 07:45:07,492 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-11-19 07:45:07,493 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 07:45:07,493 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 07:45:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 07:45:07,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 07:45:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:45:07,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:45:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:45:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:45:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:45:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:45:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-11-19 07:45:07,495 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-11-19 07:45:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:45:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-11-19 07:45:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-11-19 07:45:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:45:07,496 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:45:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:45:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-11-19 07:45:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-11-19 07:45:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-11-19 07:45:07,501 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-11-19 07:45:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:45:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:45:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:45:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:45:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:45:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-11-19 07:45:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-11-19 07:45:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:45:07,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:45:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-19 07:45:07,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-19 07:45:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-11-19 07:45:07,513 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-11-19 07:45:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:45:07,513 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:45:07,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:45:07,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:45:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-19 07:45:07,514 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-19 07:45:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:45:07,514 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:45:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-11-19 07:45:07,514 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-11-19 07:45:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:45:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:45:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:45:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:45:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:45:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-19 07:45:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-19 07:45:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-11-19 07:45:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-11-19 07:45:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-19 07:45:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-19 07:45:07,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:45:07,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:45:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-11-19 07:45:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-11-19 07:45:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-11-19 07:45:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-11-19 07:45:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:45:07,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:45:07,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:45:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-11-19 07:45:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-11-19 07:45:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:45:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:45:07,518 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 07:45:07,518 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 07:45:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:45:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 07:45:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 07:45:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:45:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:45:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:45:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:45:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-11-19 07:45:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-11-19 07:45:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 07:45:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 07:45:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2022-11-19 07:45:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2022-11-19 07:45:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2022-11-19 07:45:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2022-11-19 07:45:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 07:45:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 07:45:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-11-19 07:45:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-11-19 07:45:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-11-19 07:45:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-11-19 07:45:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 07:45:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 07:45:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-11-19 07:45:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-11-19 07:45:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:45:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:45:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-11-19 07:45:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-11-19 07:45:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:45:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-11-19 07:45:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-11-19 07:45:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-19 07:45:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-19 07:45:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-11-19 07:45:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-11-19 07:45:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-19 07:45:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-19 07:45:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:45:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:45:08,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:45:08,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:45:08,782 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:45:17,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:45:19,374 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:45:19,374 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:45:19,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:19 BoogieIcfgContainer [2022-11-19 07:45:19,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:45:19,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:45:19,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:45:19,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:45:19,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:03" (1/3) ... [2022-11-19 07:45:19,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324769a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:19, skipping insertion in model container [2022-11-19 07:45:19,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:06" (2/3) ... [2022-11-19 07:45:19,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324769a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:19, skipping insertion in model container [2022-11-19 07:45:19,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:19" (3/3) ... [2022-11-19 07:45:19,394 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2022-11-19 07:45:19,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:45:19,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:45:19,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:45:19,534 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b6f9e56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:45:19,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:45:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) [2022-11-19 07:45:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 07:45:19,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:19,584 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:19,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 687272666, now seen corresponding path program 1 times [2022-11-19 07:45:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:19,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990503120] [2022-11-19 07:45:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-19 07:45:20,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:20,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990503120] [2022-11-19 07:45:20,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990503120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:20,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:20,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:45:20,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270836784] [2022-11-19 07:45:20,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:20,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:45:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:20,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:45:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:45:20,711 INFO L87 Difference]: Start difference. First operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:45:22,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:27,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:28,016 INFO L93 Difference]: Finished difference Result 3236 states and 4636 transitions. [2022-11-19 07:45:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:45:28,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-11-19 07:45:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:28,061 INFO L225 Difference]: With dead ends: 3236 [2022-11-19 07:45:28,061 INFO L226 Difference]: Without dead ends: 2002 [2022-11-19 07:45:28,075 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:45:28,079 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1180 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:28,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 3257 Invalid, 450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-19 07:45:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-19 07:45:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1998. [2022-11-19 07:45:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1189 states have (on average 1.2775441547518924) internal successors, (1519), 1214 states have internal predecessors, (1519), 650 states have call successors, (650), 159 states have call predecessors, (650), 158 states have return successors, (653), 646 states have call predecessors, (653), 649 states have call successors, (653) [2022-11-19 07:45:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2822 transitions. [2022-11-19 07:45:28,326 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2822 transitions. Word has length 131 [2022-11-19 07:45:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:28,328 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 2822 transitions. [2022-11-19 07:45:28,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:45:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2822 transitions. [2022-11-19 07:45:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-19 07:45:28,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:28,338 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:45:28,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 996477237, now seen corresponding path program 1 times [2022-11-19 07:45:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:28,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344516656] [2022-11-19 07:45:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:45:29,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:29,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344516656] [2022-11-19 07:45:29,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344516656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:29,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:29,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063780956] [2022-11-19 07:45:29,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:29,397 INFO L87 Difference]: Start difference. First operand 1998 states and 2822 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:45:31,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:35,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:38,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:40,232 INFO L93 Difference]: Finished difference Result 5852 states and 8264 transitions. [2022-11-19 07:45:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:45:40,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2022-11-19 07:45:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:40,256 INFO L225 Difference]: With dead ends: 5852 [2022-11-19 07:45:40,257 INFO L226 Difference]: Without dead ends: 3882 [2022-11-19 07:45:40,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:45:40,268 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1540 mSDsluCounter, 5274 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7178 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:40,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 7178 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-19 07:45:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-11-19 07:45:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3866. [2022-11-19 07:45:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2304 states have (on average 1.2786458333333333) internal successors, (2946), 2354 states have internal predecessors, (2946), 1249 states have call successors, (1249), 313 states have call predecessors, (1249), 312 states have return successors, (1256), 1241 states have call predecessors, (1256), 1248 states have call successors, (1256) [2022-11-19 07:45:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5451 transitions. [2022-11-19 07:45:40,479 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5451 transitions. Word has length 188 [2022-11-19 07:45:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:40,480 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5451 transitions. [2022-11-19 07:45:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:45:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5451 transitions. [2022-11-19 07:45:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:45:40,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:40,490 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:40,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:45:40,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1072725272, now seen corresponding path program 1 times [2022-11-19 07:45:40,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375572510] [2022-11-19 07:45:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:40,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:45:41,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:41,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375572510] [2022-11-19 07:45:41,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375572510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:41,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:41,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312364712] [2022-11-19 07:45:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:41,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:41,159 INFO L87 Difference]: Start difference. First operand 3866 states and 5451 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:45:43,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:51,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:51,829 INFO L93 Difference]: Finished difference Result 9604 states and 13538 transitions. [2022-11-19 07:45:51,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:45:51,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2022-11-19 07:45:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:51,865 INFO L225 Difference]: With dead ends: 9604 [2022-11-19 07:45:51,866 INFO L226 Difference]: Without dead ends: 5766 [2022-11-19 07:45:51,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:45:51,887 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1545 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:51,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 7180 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 893 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-19 07:45:51,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-11-19 07:45:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5724. [2022-11-19 07:45:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 3411 states have (on average 1.279683377308707) internal successors, (4365), 3492 states have internal predecessors, (4365), 1846 states have call successors, (1846), 467 states have call predecessors, (1846), 466 states have return successors, (1857), 1828 states have call predecessors, (1857), 1845 states have call successors, (1857) [2022-11-19 07:45:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 8068 transitions. [2022-11-19 07:45:52,283 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 8068 transitions. Word has length 185 [2022-11-19 07:45:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:52,284 INFO L495 AbstractCegarLoop]: Abstraction has 5724 states and 8068 transitions. [2022-11-19 07:45:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:45:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 8068 transitions. [2022-11-19 07:45:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-19 07:45:52,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:52,292 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:52,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:45:52,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1962976347, now seen corresponding path program 1 times [2022-11-19 07:45:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:52,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79507498] [2022-11-19 07:45:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:52,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:45:52,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:52,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79507498] [2022-11-19 07:45:52,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79507498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:52,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:52,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876834180] [2022-11-19 07:45:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:52,901 INFO L87 Difference]: Start difference. First operand 5724 states and 8068 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:45:54,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:03,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:03,937 INFO L93 Difference]: Finished difference Result 10292 states and 14424 transitions. [2022-11-19 07:46:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:46:03,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2022-11-19 07:46:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:03,973 INFO L225 Difference]: With dead ends: 10292 [2022-11-19 07:46:03,973 INFO L226 Difference]: Without dead ends: 5766 [2022-11-19 07:46:03,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:46:03,994 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1540 mSDsluCounter, 5274 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7178 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:03,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 7178 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-19 07:46:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-11-19 07:46:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5732. [2022-11-19 07:46:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 3419 states have (on average 1.2790289558350394) internal successors, (4373), 3498 states have internal predecessors, (4373), 1844 states have call successors, (1844), 469 states have call predecessors, (1844), 468 states have return successors, (1855), 1828 states have call predecessors, (1855), 1843 states have call successors, (1855) [2022-11-19 07:46:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 8072 transitions. [2022-11-19 07:46:04,335 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 8072 transitions. Word has length 187 [2022-11-19 07:46:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:04,338 INFO L495 AbstractCegarLoop]: Abstraction has 5732 states and 8072 transitions. [2022-11-19 07:46:04,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:46:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 8072 transitions. [2022-11-19 07:46:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-19 07:46:04,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:04,346 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:46:04,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1608431634, now seen corresponding path program 1 times [2022-11-19 07:46:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:04,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297154460] [2022-11-19 07:46:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:46:04,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:04,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297154460] [2022-11-19 07:46:04,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297154460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:04,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:04,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:46:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781893727] [2022-11-19 07:46:04,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:04,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:46:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:46:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:04,957 INFO L87 Difference]: Start difference. First operand 5732 states and 8072 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:46:07,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:15,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:16,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:16,558 INFO L93 Difference]: Finished difference Result 10104 states and 14123 transitions. [2022-11-19 07:46:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:46:16,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 186 [2022-11-19 07:46:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:16,588 INFO L225 Difference]: With dead ends: 10104 [2022-11-19 07:46:16,589 INFO L226 Difference]: Without dead ends: 5568 [2022-11-19 07:46:16,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:46:16,605 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1540 mSDsluCounter, 5274 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7178 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:16,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 7178 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 887 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 07:46:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2022-11-19 07:46:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5540. [2022-11-19 07:46:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 3306 states have (on average 1.2770719903206291) internal successors, (4222), 3375 states have internal predecessors, (4222), 1769 states have call successors, (1769), 465 states have call predecessors, (1769), 464 states have return successors, (1780), 1757 states have call predecessors, (1780), 1768 states have call successors, (1780) [2022-11-19 07:46:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 7771 transitions. [2022-11-19 07:46:16,908 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 7771 transitions. Word has length 186 [2022-11-19 07:46:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:16,909 INFO L495 AbstractCegarLoop]: Abstraction has 5540 states and 7771 transitions. [2022-11-19 07:46:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:46:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 7771 transitions. [2022-11-19 07:46:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-19 07:46:16,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:16,916 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:16,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:46:16,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1558269257, now seen corresponding path program 1 times [2022-11-19 07:46:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168404347] [2022-11-19 07:46:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-19 07:46:17,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168404347] [2022-11-19 07:46:17,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168404347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:46:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841940167] [2022-11-19 07:46:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:17,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:17,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:46:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:19,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 4195 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:19,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:46:19,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:19,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841940167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:19,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:46:19,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-19 07:46:19,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026989974] [2022-11-19 07:46:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:19,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:46:19,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:46:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:46:19,377 INFO L87 Difference]: Start difference. First operand 5540 states and 7771 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:46:21,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:23,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:25,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:27,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:40,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:46,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:47,453 INFO L93 Difference]: Finished difference Result 13006 states and 18244 transitions. [2022-11-19 07:46:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:46:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 198 [2022-11-19 07:46:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:47,500 INFO L225 Difference]: With dead ends: 13006 [2022-11-19 07:46:47,501 INFO L226 Difference]: Without dead ends: 9148 [2022-11-19 07:46:47,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:46:47,517 INFO L413 NwaCegarLoop]: 2160 mSDtfsCounter, 1580 mSDsluCounter, 10115 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:47,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 12275 Invalid, 1700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1695 Invalid, 3 Unknown, 0 Unchecked, 27.4s Time] [2022-11-19 07:46:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9148 states. [2022-11-19 07:46:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9148 to 9086. [2022-11-19 07:46:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 5427 states have (on average 1.2782384374424176) internal successors, (6937), 5548 states have internal predecessors, (6937), 2888 states have call successors, (2888), 767 states have call predecessors, (2888), 770 states have return successors, (2917), 2864 states have call predecessors, (2917), 2887 states have call successors, (2917) [2022-11-19 07:46:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12742 transitions. [2022-11-19 07:46:47,982 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12742 transitions. Word has length 198 [2022-11-19 07:46:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:47,982 INFO L495 AbstractCegarLoop]: Abstraction has 9086 states and 12742 transitions. [2022-11-19 07:46:47,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:46:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12742 transitions. [2022-11-19 07:46:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-19 07:46:47,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:47,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:48,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:48,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:46:48,212 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1655465684, now seen corresponding path program 1 times [2022-11-19 07:46:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:48,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556417613] [2022-11-19 07:46:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:48,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:46:49,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:49,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556417613] [2022-11-19 07:46:49,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556417613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:46:49,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820258398] [2022-11-19 07:46:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:49,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:49,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:49,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:49,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:46:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:50,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 4197 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:50,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:46:50,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:46:50,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820258398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:50,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:46:50,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:46:50,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493747473] [2022-11-19 07:46:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:46:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:46:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:46:50,580 INFO L87 Difference]: Start difference. First operand 9086 states and 12742 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:46:52,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:07,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:10,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:14,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:16,214 INFO L93 Difference]: Finished difference Result 20120 states and 28206 transitions. [2022-11-19 07:47:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:47:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2022-11-19 07:47:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:16,270 INFO L225 Difference]: With dead ends: 20120 [2022-11-19 07:47:16,271 INFO L226 Difference]: Without dead ends: 12716 [2022-11-19 07:47:16,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:47:16,299 INFO L413 NwaCegarLoop]: 2836 mSDtfsCounter, 1539 mSDsluCounter, 12829 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15665 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:16,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 15665 Invalid, 2267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2265 Invalid, 1 Unknown, 0 Unchecked, 25.0s Time] [2022-11-19 07:47:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2022-11-19 07:47:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12642. [2022-11-19 07:47:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12642 states, 7554 states have (on average 1.2785279322213396) internal successors, (9658), 7733 states have internal predecessors, (9658), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3969 states have call predecessors, (4060), 4006 states have call successors, (4060) [2022-11-19 07:47:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12642 states to 12642 states and 17725 transitions. [2022-11-19 07:47:16,958 INFO L78 Accepts]: Start accepts. Automaton has 12642 states and 17725 transitions. Word has length 199 [2022-11-19 07:47:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 12642 states and 17725 transitions. [2022-11-19 07:47:16,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:47:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 12642 states and 17725 transitions. [2022-11-19 07:47:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-19 07:47:16,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:16,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:16,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:17,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:47:17,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:47:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash -906188944, now seen corresponding path program 1 times [2022-11-19 07:47:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:17,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347111269] [2022-11-19 07:47:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:17,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:47:18,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:18,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347111269] [2022-11-19 07:47:18,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347111269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:18,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997747999] [2022-11-19 07:47:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:18,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:18,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:18,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:18,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:47:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:19,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 4199 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:47:19,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:47:19,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:19,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997747999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:19,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:19,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:47:19,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656682442] [2022-11-19 07:47:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:47:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:47:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:47:19,578 INFO L87 Difference]: Start difference. First operand 12642 states and 17725 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:47:21,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:28,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:34,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:40,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:41,084 INFO L93 Difference]: Finished difference Result 27224 states and 38164 transitions. [2022-11-19 07:47:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:47:41,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2022-11-19 07:47:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:41,165 INFO L225 Difference]: With dead ends: 27224 [2022-11-19 07:47:41,166 INFO L226 Difference]: Without dead ends: 16264 [2022-11-19 07:47:41,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:47:41,208 INFO L413 NwaCegarLoop]: 2833 mSDtfsCounter, 1535 mSDsluCounter, 12817 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 15650 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:41,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 15650 Invalid, 2263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2260 Invalid, 2 Unknown, 0 Unchecked, 20.8s Time] [2022-11-19 07:47:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16264 states. [2022-11-19 07:47:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16264 to 14492. [2022-11-19 07:47:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14492 states, 8655 states have (on average 1.2791450028885039) internal successors, (11071), 8867 states have internal predecessors, (11071), 4602 states have call successors, (4602), 1221 states have call predecessors, (4602), 1234 states have return successors, (4671), 4554 states have call predecessors, (4671), 4601 states have call successors, (4671) [2022-11-19 07:47:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14492 states to 14492 states and 20344 transitions. [2022-11-19 07:47:42,064 INFO L78 Accepts]: Start accepts. Automaton has 14492 states and 20344 transitions. Word has length 200 [2022-11-19 07:47:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:42,064 INFO L495 AbstractCegarLoop]: Abstraction has 14492 states and 20344 transitions. [2022-11-19 07:47:42,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:47:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 14492 states and 20344 transitions. [2022-11-19 07:47:42,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 07:47:42,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:42,076 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:42,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:42,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:42,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:47:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 7119643, now seen corresponding path program 1 times [2022-11-19 07:47:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:42,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441996752] [2022-11-19 07:47:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:47:43,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:43,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441996752] [2022-11-19 07:47:43,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441996752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:47:43,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124670104] [2022-11-19 07:47:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:43,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:43,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:43,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:47:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:44,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 4201 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:47:44,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 07:47:44,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124670104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:44,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:47:44,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:47:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542899373] [2022-11-19 07:47:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:47:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:47:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:47:44,505 INFO L87 Difference]: Start difference. First operand 14492 states and 20344 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:47:46,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:53,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:55,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:57,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:09,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:10,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:10,808 INFO L93 Difference]: Finished difference Result 30930 states and 43404 transitions. [2022-11-19 07:48:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:48:10,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 201 [2022-11-19 07:48:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:10,885 INFO L225 Difference]: With dead ends: 30930 [2022-11-19 07:48:10,885 INFO L226 Difference]: Without dead ends: 18120 [2022-11-19 07:48:10,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:48:10,921 INFO L413 NwaCegarLoop]: 2836 mSDtfsCounter, 1539 mSDsluCounter, 12829 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15665 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:10,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 15665 Invalid, 2267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2265 Invalid, 1 Unknown, 0 Unchecked, 25.5s Time] [2022-11-19 07:48:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18120 states. [2022-11-19 07:48:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18120 to 14494. [2022-11-19 07:48:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14494 states, 8657 states have (on average 1.2790805128797504) internal successors, (11073), 8867 states have internal predecessors, (11073), 4602 states have call successors, (4602), 1221 states have call predecessors, (4602), 1234 states have return successors, (4671), 4556 states have call predecessors, (4671), 4601 states have call successors, (4671) [2022-11-19 07:48:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14494 states to 14494 states and 20346 transitions. [2022-11-19 07:48:11,624 INFO L78 Accepts]: Start accepts. Automaton has 14494 states and 20346 transitions. Word has length 201 [2022-11-19 07:48:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:11,625 INFO L495 AbstractCegarLoop]: Abstraction has 14494 states and 20346 transitions. [2022-11-19 07:48:11,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 07:48:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 14494 states and 20346 transitions. [2022-11-19 07:48:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 07:48:11,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:11,636 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:11,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:48:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:11,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:11,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 120367351, now seen corresponding path program 1 times [2022-11-19 07:48:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:11,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030192340] [2022-11-19 07:48:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:11,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-19 07:48:12,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:12,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030192340] [2022-11-19 07:48:12,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030192340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:12,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:12,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770187702] [2022-11-19 07:48:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:12,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:12,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:12,215 INFO L87 Difference]: Start difference. First operand 14494 states and 20346 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:48:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:19,081 INFO L93 Difference]: Finished difference Result 37935 states and 53022 transitions. [2022-11-19 07:48:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2022-11-19 07:48:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:19,196 INFO L225 Difference]: With dead ends: 37935 [2022-11-19 07:48:19,197 INFO L226 Difference]: Without dead ends: 23469 [2022-11-19 07:48:19,246 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:48:19,247 INFO L413 NwaCegarLoop]: 2307 mSDtfsCounter, 1370 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:19,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 3747 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 07:48:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23469 states. [2022-11-19 07:48:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23469 to 23450. [2022-11-19 07:48:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23450 states, 14002 states have (on average 1.2770318525924869) internal successors, (17881), 14392 states have internal predecessors, (17881), 7346 states have call successors, (7346), 2074 states have call predecessors, (7346), 2101 states have return successors, (7453), 7247 states have call predecessors, (7453), 7345 states have call successors, (7453) [2022-11-19 07:48:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23450 states to 23450 states and 32680 transitions. [2022-11-19 07:48:20,408 INFO L78 Accepts]: Start accepts. Automaton has 23450 states and 32680 transitions. Word has length 201 [2022-11-19 07:48:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:20,409 INFO L495 AbstractCegarLoop]: Abstraction has 23450 states and 32680 transitions. [2022-11-19 07:48:20,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:48:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 23450 states and 32680 transitions. [2022-11-19 07:48:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 07:48:20,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:20,419 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:48:20,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -638813091, now seen corresponding path program 1 times [2022-11-19 07:48:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:20,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608698199] [2022-11-19 07:48:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-19 07:48:21,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608698199] [2022-11-19 07:48:21,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608698199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:48:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221707042] [2022-11-19 07:48:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:21,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:21,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:21,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:48:21,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbc0986-a32b-4955-855c-d888c4f172e3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:48:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:22,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 4268 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:48:22,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:48:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-19 07:48:22,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:48:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-19 07:48:23,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221707042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:48:23,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1769790099] [2022-11-19 07:48:23,322 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2022-11-19 07:48:23,323 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:48:23,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:48:23,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:48:23,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:48:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:28,862 INFO L217 Elim1Store]: Index analysis took 135 ms [2022-11-19 07:48:29,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 66 select indices, 66 select index equivalence classes, 2167 disjoint index pairs (out of 2145 index pairs), introduced 66 new quantified variables, introduced 0 case distinctions, treesize of input 640 treesize of output 843 [2022-11-19 07:48:29,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-19 07:48:30,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 103 select indices, 103 select index equivalence classes, 5356 disjoint index pairs (out of 5253 index pairs), introduced 103 new quantified variables, introduced 0 case distinctions, treesize of input 3296 treesize of output 2884 [2022-11-19 07:48:32,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-19 07:48:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:33,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:33,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:33,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:38,417 INFO L217 Elim1Store]: Index analysis took 5700 ms [2022-11-19 07:59:09,441 WARN L233 SmtUtils]: Spent 10.51m on a formula simplification. DAG size of input: 7025 DAG size of output: 3099 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:59:09,458 INFO L321 Elim1Store]: treesize reduction 25786, result has 19.9 percent of original size [2022-11-19 07:59:09,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 318 select indices, 318 select index equivalence classes, 50413 disjoint index pairs (out of 50403 index pairs), introduced 318 new quantified variables, introduced 321 case distinctions, treesize of input 1609 treesize of output 7380