./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0 --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 b1d9346b63752b34e66e21333a7236034d1604ec5ec14f79593d3da0c163d1d9 --- 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-e04fb08 [2022-11-16 20:03:06,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:03:06,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:03:06,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:03:06,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:03:06,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:03:06,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:03:06,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:03:06,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:03:06,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:03:06,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:03:06,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:03:06,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:03:06,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:03:06,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:03:06,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:03:06,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:03:06,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:03:06,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:03:06,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:03:06,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:03:06,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:03:06,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:03:06,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:03:06,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:03:06,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:03:06,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:03:06,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:03:06,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:03:06,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:03:06,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:03:06,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:03:06,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:03:06,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:03:06,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:03:06,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:03:06,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:03:06,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:03:06,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:03:06,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:03:06,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:03:06,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:03:06,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:03:06,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:03:06,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:03:06,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:03:06,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:03:06,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:03:06,937 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:03:06,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:03:06,937 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:03:06,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:03:06,939 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:03:06,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:03:06,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:03:06,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:03:06,940 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:03:06,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:03:06,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:03:06,940 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:03:06,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:03:06,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:03:06,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:03:06,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:03:06,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:03:06,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:03:06,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:03:06,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:03:06,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:03:06,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:03:06,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:03:06,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:03:06,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:03:06,946 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:03:06,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:03:06,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:03:06,947 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:03:06,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:03:06,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:03:06,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:03:06,948 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_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1d9346b63752b34e66e21333a7236034d1604ec5ec14f79593d3da0c163d1d9 [2022-11-16 20:03:07,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:03:07,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:03:07,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:03:07,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:03:07,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:03:07,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-16 20:03:07,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/data/4422447c4/c2496e66c6d94f4fada19b4ac5df75b8/FLAG346116058 [2022-11-16 20:03:08,248 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:03:08,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-16 20:03:08,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/data/4422447c4/c2496e66c6d94f4fada19b4ac5df75b8/FLAG346116058 [2022-11-16 20:03:08,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/data/4422447c4/c2496e66c6d94f4fada19b4ac5df75b8 [2022-11-16 20:03:08,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:03:08,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:03:08,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:03:08,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:03:08,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:03:08,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:03:08" (1/1) ... [2022-11-16 20:03:08,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24610437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:08, skipping insertion in model container [2022-11-16 20:03:08,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:03:08" (1/1) ... [2022-11-16 20:03:08,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:03:08,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:03:12,429 WARN L229 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_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i[381126,381139] [2022-11-16 20:03:12,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:03:12,836 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:03:13,577 WARN L229 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_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i[381126,381139] [2022-11-16 20:03:13,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:03:13,889 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:03:13,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13 WrapperNode [2022-11-16 20:03:13,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:03:13,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:03:13,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:03:13,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:03:13,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:14,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:14,858 INFO L138 Inliner]: procedures = 549, calls = 5021, calls flagged for inlining = 246, calls inlined = 225, statements flattened = 9869 [2022-11-16 20:03:14,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:03:14,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:03:14,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:03:14,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:03:14,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:14,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:03:15,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:03:15,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:03:15,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:03:15,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (1/1) ... [2022-11-16 20:03:15,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:03:15,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:03:15,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:03:15,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b785b27-7d87-4a0a-9f6f-85c8a1470f00/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:03:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-16 20:03:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-16 20:03:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_urb_cleanup [2022-11-16 20:03:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_urb_cleanup [2022-11-16 20:03:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-16 20:03:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-16 20:03:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-16 20:03:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 20:03:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 20:03:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure pm_alsa_resume [2022-11-16 20:03:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_alsa_resume [2022-11-16 20:03:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-16 20:03:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-16 20:03:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:03:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:03:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_3 [2022-11-16 20:03:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_3 [2022-11-16 20:03:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-16 20:03:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-16 20:03:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_stop_streaming [2022-11-16 20:03:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_stop_streaming [2022-11-16 20:03:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure vdev_init [2022-11-16 20:03:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure vdev_init [2022-11-16 20:03:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_fmt [2022-11-16 20:03:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_fmt [2022-11-16 20:03:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_check_mode_dvbt [2022-11-16 20:03:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_check_mode_dvbt [2022-11-16 20:03:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure set_frequency___0 [2022-11-16 20:03:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure set_frequency___0 [2022-11-16 20:03:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure set_tuner_mode [2022-11-16 20:03:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tuner_mode [2022-11-16 20:03:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fm_close [2022-11-16 20:03:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fm_close [2022-11-16 20:03:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-16 20:03:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-16 20:03:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_capture_pointer [2022-11-16 20:03:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_capture_pointer [2022-11-16 20:03:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_vmalloc [2022-11-16 20:03:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_vmalloc [2022-11-16 20:03:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-16 20:03:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-16 20:03:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-16 20:03:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-16 20:03:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:03:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_capture_trigger [2022-11-16 20:03:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_capture_trigger [2022-11-16 20:03:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_check_mode_radio [2022-11-16 20:03:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_check_mode_radio [2022-11-16 20:03:15,928 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_pcm_close [2022-11-16 20:03:15,929 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_pcm_close [2022-11-16 20:03:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 20:03:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure check_control_id [2022-11-16 20:03:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure check_control_id [2022-11-16 20:03:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-16 20:03:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-16 20:03:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-16 20:03:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-16 20:03:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure pd_buf_queue [2022-11-16 20:03:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_buf_queue [2022-11-16 20:03:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 20:03:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-16 20:03:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-16 20:03:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure set_frequency [2022-11-16 20:03:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure set_frequency [2022-11-16 20:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_mmap [2022-11-16 20:03:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_mmap [2022-11-16 20:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-16 20:03:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-16 20:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:03:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 20:03:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 20:03:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_transfer_stop [2022-11-16 20:03:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_transfer_stop [2022-11-16 20:03:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 20:03:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 20:03:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-11-16 20:03:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-11-16 20:03:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure is_working [2022-11-16 20:03:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure is_working [2022-11-16 20:03:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-16 20:03:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-16 20:03:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure pm_alsa_suspend [2022-11-16 20:03:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_alsa_suspend [2022-11-16 20:03:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure fire_audio_urb [2022-11-16 20:03:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_audio_urb [2022-11-16 20:03:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-16 20:03:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-16 20:03:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_stream [2022-11-16 20:03:15,937 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_stream [2022-11-16 20:03:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2022-11-16 20:03:15,937 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2022-11-16 20:03:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 20:03:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 20:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:03:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure get_audio_std [2022-11-16 20:03:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure get_audio_std [2022-11-16 20:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_poseidon [2022-11-16 20:03:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_poseidon [2022-11-16 20:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 20:03:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 20:03:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-16 20:03:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-16 20:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 20:03:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_poseidon [2022-11-16 20:03:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_poseidon [2022-11-16 20:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_capture_open [2022-11-16 20:03:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_capture_open [2022-11-16 20:03:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_signal_strength [2022-11-16 20:03:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_signal_strength [2022-11-16 20:03:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_release [2022-11-16 20:03:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_release [2022-11-16 20:03:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_open [2022-11-16 20:03:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_open [2022-11-16 20:03:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-16 20:03:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-16 20:03:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-16 20:03:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-16 20:03:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-11-16 20:03:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-11-16 20:03:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-16 20:03:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-16 20:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure send_set_req [2022-11-16 20:03:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure send_set_req [2022-11-16 20:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-16 20:03:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-16 20:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-16 20:03:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-16 20:03:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure init_copy [2022-11-16 20:03:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure init_copy [2022-11-16 20:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-16 20:03:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-16 20:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_bulk_urbs_generic [2022-11-16 20:03:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_bulk_urbs_generic [2022-11-16 20:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:03:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:03:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-16 20:03:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-16 20:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-16 20:03:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-16 20:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 20:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 20:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 20:03:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 20:03:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-16 20:03:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-16 20:03:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-16 20:03:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-16 20:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_pd_get_page [2022-11-16 20:03:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_pd_get_page [2022-11-16 20:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-16 20:03:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-16 20:03:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-16 20:03:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-16 20:03:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb [2022-11-16 20:03:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb [2022-11-16 20:03:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-16 20:03:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-16 20:03:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_get_fe [2022-11-16 20:03:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_get_fe [2022-11-16 20:03:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure pd_dvb_usb_device_cleanup [2022-11-16 20:03:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_dvb_usb_device_cleanup [2022-11-16 20:03:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_start_streaming [2022-11-16 20:03:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_start_streaming [2022-11-16 20:03:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 20:03:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 20:03:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 20:03:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 20:03:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2022-11-16 20:03:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2022-11-16 20:03:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-16 20:03:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-16 20:03:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 20:03:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 20:03:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_intf [2022-11-16 20:03:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_intf [2022-11-16 20:03:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 20:03:15,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 20:03:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 20:03:15,964 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 20:03:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_tuner [2022-11-16 20:03:15,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_tuner [2022-11-16 20:03:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:03:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 20:03:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 20:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure set_std [2022-11-16 20:03:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure set_std [2022-11-16 20:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb_generic [2022-11-16 20:03:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb_generic [2022-11-16 20:03:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_ts_bus_ctrl [2022-11-16 20:03:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_ts_bus_ctrl [2022-11-16 20:03:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_exit [2022-11-16 20:03:15,966 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_exit [2022-11-16 20:03:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fm_open [2022-11-16 20:03:15,966 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fm_open [2022-11-16 20:03:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-16 20:03:15,966 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-16 20:03:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:03:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 20:03:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 20:03:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_status [2022-11-16 20:03:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_status [2022-11-16 20:03:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_stop [2022-11-16 20:03:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_stop [2022-11-16 20:03:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-16 20:03:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-16 20:03:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fe_release [2022-11-16 20:03:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fe_release [2022-11-16 20:03:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-16 20:03:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-16 20:03:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-16 20:03:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-16 20:03:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure get_pd [2022-11-16 20:03:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pd [2022-11-16 20:03:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_disconnect [2022-11-16 20:03:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_disconnect [2022-11-16 20:03:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_poll [2022-11-16 20:03:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_poll [2022-11-16 20:03:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-16 20:03:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-16 20:03:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure send_get_req [2022-11-16 20:03:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure send_get_req [2022-11-16 20:03:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2022-11-16 20:03:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2022-11-16 20:03:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-11-16 20:03:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-11-16 20:03:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_hw_capture_params [2022-11-16 20:03:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_hw_capture_params [2022-11-16 20:03:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 20:03:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 20:03:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_unc_blocks [2022-11-16 20:03:15,971 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_unc_blocks [2022-11-16 20:03:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure audio_buf_free [2022-11-16 20:03:15,971 INFO L138 BoogieDeclarations]: Found implementation of procedure audio_buf_free [2022-11-16 20:03:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 20:03:15,972 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 20:03:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fe_get_tune_settings [2022-11-16 20:03:15,976 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fe_get_tune_settings [2022-11-16 20:03:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_set_fe [2022-11-16 20:03:15,976 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_set_fe [2022-11-16 20:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure hibernation_resume [2022-11-16 20:03:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure hibernation_resume [2022-11-16 20:03:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_hw_capture_free [2022-11-16 20:03:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_hw_capture_free [2022-11-16 20:03:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 20:03:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 20:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_resume [2022-11-16 20:03:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_resume [2022-11-16 20:03:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_checkmode [2022-11-16 20:03:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_checkmode [2022-11-16 20:03:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-16 20:03:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-16 20:03:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-11-16 20:03:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-11-16 20:03:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-16 20:03:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-16 20:03:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2022-11-16 20:03:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2022-11-16 20:03:15,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-16 20:03:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-16 20:03:15,981 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_vmalloc_init [2022-11-16 20:03:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_vmalloc_init [2022-11-16 20:03:15,981 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-16 20:03:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-16 20:03:15,981 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2022-11-16 20:03:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2022-11-16 20:03:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure get_autopm_ref [2022-11-16 20:03:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure get_autopm_ref [2022-11-16 20:03:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_fe_sleep [2022-11-16 20:03:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_fe_sleep [2022-11-16 20:03:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure pd_buf_setup [2022-11-16 20:03:15,982 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_buf_setup [2022-11-16 20:03:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_video_device [2022-11-16 20:03:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_video_device [2022-11-16 20:03:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure poseidon_read_ber [2022-11-16 20:03:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure poseidon_read_ber [2022-11-16 20:03:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:03:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure set_debug_mode [2022-11-16 20:03:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure set_debug_mode [2022-11-16 20:03:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pd_prepare [2022-11-16 20:03:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pd_prepare [2022-11-16 20:03:17,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:03:17,337 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:03:28,494 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 20:09:44,307 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:09:46,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:09:46,906 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:09:46,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:46 BoogieIcfgContainer [2022-11-16 20:09:46,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:09:46,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:09:46,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:09:46,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:09:46,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:03:08" (1/3) ... [2022-11-16 20:09:46,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439063a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:46, skipping insertion in model container [2022-11-16 20:09:46,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:03:13" (2/3) ... [2022-11-16 20:09:46,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439063a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:46, skipping insertion in model container [2022-11-16 20:09:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:46" (3/3) ... [2022-11-16 20:09:46,925 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-4a349aa-1-32_7a-drivers--media--video--tlg2300--poseidon.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-16 20:09:46,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:09:46,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:09:47,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:09:47,074 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;@16b5af24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:09:47,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:09:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 2093 states, 1308 states have (on average 1.3692660550458715) internal successors, (1791), 1343 states have internal predecessors, (1791), 651 states have call successors, (651), 133 states have call predecessors, (651), 132 states have return successors, (636), 635 states have call predecessors, (636), 636 states have call successors, (636) [2022-11-16 20:09:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 20:09:47,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:47,114 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 20:09:47,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:47,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash 826436147, now seen corresponding path program 1 times [2022-11-16 20:09:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:47,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801571904] [2022-11-16 20:09:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 20:09:49,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:09:49,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801571904] [2022-11-16 20:09:49,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801571904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:49,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:09:49,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:09:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602263032] [2022-11-16 20:09:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:09:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:09:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:09:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:09:49,047 INFO L87 Difference]: Start difference. First operand has 2093 states, 1308 states have (on average 1.3692660550458715) internal successors, (1791), 1343 states have internal predecessors, (1791), 651 states have call successors, (651), 133 states have call predecessors, (651), 132 states have return successors, (636), 635 states have call predecessors, (636), 636 states have call successors, (636) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 20:09:51,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:09:53,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:09:57,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:01,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:04,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:10:06,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:08,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:11,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:11,123 INFO L93 Difference]: Finished difference Result 6177 states and 9313 transitions. [2022-11-16 20:10:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:10:11,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-11-16 20:10:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:11,176 INFO L225 Difference]: With dead ends: 6177 [2022-11-16 20:10:11,177 INFO L226 Difference]: Without dead ends: 4061 [2022-11-16 20:10:11,194 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 [2022-11-16 20:10:11,202 INFO L413 NwaCegarLoop]: 3360 mSDtfsCounter, 2929 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 6097 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:11,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2933 Valid, 6097 Invalid, 635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 627 Invalid, 5 Unknown, 0 Unchecked, 21.6s Time] [2022-11-16 20:10:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2022-11-16 20:10:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 4054. [2022-11-16 20:10:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 2565 states have (on average 1.3582846003898636) internal successors, (3484), 2592 states have internal predecessors, (3484), 1228 states have call successors, (1228), 261 states have call predecessors, (1228), 260 states have return successors, (1222), 1216 states have call predecessors, (1222), 1218 states have call successors, (1222) [2022-11-16 20:10:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5934 transitions. [2022-11-16 20:10:11,567 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5934 transitions. Word has length 74 [2022-11-16 20:10:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:11,570 INFO L495 AbstractCegarLoop]: Abstraction has 4054 states and 5934 transitions. [2022-11-16 20:10:11,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 20:10:11,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5934 transitions. [2022-11-16 20:10:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 20:10:11,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:11,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 20:10:11,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:10:11,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:11,583 INFO L85 PathProgramCache]: Analyzing trace with hash 616892412, now seen corresponding path program 1 times [2022-11-16 20:10:11,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:11,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985126750] [2022-11-16 20:10:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:11,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 20:10:12,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:12,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985126750] [2022-11-16 20:10:12,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985126750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:10:12,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:10:12,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:10:12,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744101051] [2022-11-16 20:10:12,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:10:12,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:10:12,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:10:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:10:12,449 INFO L87 Difference]: Start difference. First operand 4054 states and 5934 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 20:10:14,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:17,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:18,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:20,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:23,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:10:29,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:31,200 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 [] [2022-11-16 20:10:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:33,681 INFO L93 Difference]: Finished difference Result 12029 states and 17624 transitions. [2022-11-16 20:10:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:10:33,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2022-11-16 20:10:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:33,742 INFO L225 Difference]: With dead ends: 12029 [2022-11-16 20:10:33,742 INFO L226 Difference]: Without dead ends: 7986 [2022-11-16 20:10:33,763 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 [2022-11-16 20:10:33,765 INFO L413 NwaCegarLoop]: 3336 mSDtfsCounter, 2883 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 6054 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:33,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 6054 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 5 Unknown, 0 Unchecked, 20.8s Time] [2022-11-16 20:10:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7986 states. [2022-11-16 20:10:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7986 to 7967. [2022-11-16 20:10:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7967 states, 5043 states have (on average 1.3597065238945072) internal successors, (6857), 5089 states have internal predecessors, (6857), 2409 states have call successors, (2409), 515 states have call predecessors, (2409), 514 states have return successors, (2415), 2394 states have call predecessors, (2415), 2399 states have call successors, (2415) [2022-11-16 20:10:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7967 states to 7967 states and 11681 transitions. [2022-11-16 20:10:34,204 INFO L78 Accepts]: Start accepts. Automaton has 7967 states and 11681 transitions. Word has length 81 [2022-11-16 20:10:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:34,206 INFO L495 AbstractCegarLoop]: Abstraction has 7967 states and 11681 transitions. [2022-11-16 20:10:34,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 20:10:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7967 states and 11681 transitions. [2022-11-16 20:10:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 20:10:34,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:34,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 20:10:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:10:34,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:34,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1753315871, now seen corresponding path program 1 times [2022-11-16 20:10:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:34,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588669023] [2022-11-16 20:10:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:34,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 20:10:34,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:10:34,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588669023] [2022-11-16 20:10:34,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588669023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:10:34,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:10:34,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:10:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439976855] [2022-11-16 20:10:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:10:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:10:34,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:10:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:10:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:10:34,952 INFO L87 Difference]: Start difference. First operand 7967 states and 11681 transitions. 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:10:37,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:40,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:43,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:46,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:48,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:10:50,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:10:54,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:56,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:57,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:10:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:10:58,704 INFO L93 Difference]: Finished difference Result 22753 states and 33354 transitions. [2022-11-16 20:10:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:10:58,707 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2022-11-16 20:10:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:10:58,798 INFO L225 Difference]: With dead ends: 22753 [2022-11-16 20:10:58,798 INFO L226 Difference]: Without dead ends: 14797 [2022-11-16 20:10:58,840 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 [2022-11-16 20:10:58,841 INFO L413 NwaCegarLoop]: 3299 mSDtfsCounter, 2534 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 6006 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:10:58,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2536 Valid, 6006 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 647 Invalid, 5 Unknown, 0 Unchecked, 23.3s Time] [2022-11-16 20:10:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14797 states. [2022-11-16 20:10:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14797 to 14767. [2022-11-16 20:10:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14767 states, 9375 states have (on average 1.3624533333333333) internal successors, (12773), 9445 states have internal predecessors, (12773), 4427 states have call successors, (4427), 965 states have call predecessors, (4427), 964 states have return successors, (4451), 4408 states have call predecessors, (4451), 4417 states have call successors, (4451) [2022-11-16 20:10:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14767 states to 14767 states and 21651 transitions. [2022-11-16 20:10:59,664 INFO L78 Accepts]: Start accepts. Automaton has 14767 states and 21651 transitions. Word has length 88 [2022-11-16 20:10:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:10:59,664 INFO L495 AbstractCegarLoop]: Abstraction has 14767 states and 21651 transitions. [2022-11-16 20:10:59,665 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:10:59,666 INFO L276 IsEmpty]: Start isEmpty. Operand 14767 states and 21651 transitions. [2022-11-16 20:10:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 20:10:59,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:10:59,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:10:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:10:59,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:10:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:10:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash 864028710, now seen corresponding path program 1 times [2022-11-16 20:10:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:10:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624417768] [2022-11-16 20:10:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:10:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 20:11:00,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624417768] [2022-11-16 20:11:00,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624417768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:00,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:00,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:11:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060299772] [2022-11-16 20:11:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:00,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:00,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:00,415 INFO L87 Difference]: Start difference. First operand 14767 states and 21651 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 20:11:02,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:05,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:07,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:13,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:18,310 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 [] [2022-11-16 20:11:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:20,521 INFO L93 Difference]: Finished difference Result 44067 states and 64591 transitions. [2022-11-16 20:11:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:20,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-11-16 20:11:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:20,685 INFO L225 Difference]: With dead ends: 44067 [2022-11-16 20:11:20,685 INFO L226 Difference]: Without dead ends: 29311 [2022-11-16 20:11:20,764 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 [2022-11-16 20:11:20,768 INFO L413 NwaCegarLoop]: 3360 mSDtfsCounter, 2925 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:20,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2927 Valid, 6069 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 643 Invalid, 4 Unknown, 0 Unchecked, 19.2s Time] [2022-11-16 20:11:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29311 states. [2022-11-16 20:11:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29311 to 29290. [2022-11-16 20:11:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29290 states, 18588 states have (on average 1.361900150634818) internal successors, (25315), 18721 states have internal predecessors, (25315), 8773 states have call successors, (8773), 1929 states have call predecessors, (8773), 1928 states have return successors, (8835), 8743 states have call predecessors, (8835), 8763 states have call successors, (8835) [2022-11-16 20:11:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29290 states to 29290 states and 42923 transitions. [2022-11-16 20:11:22,287 INFO L78 Accepts]: Start accepts. Automaton has 29290 states and 42923 transitions. Word has length 89 [2022-11-16 20:11:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:22,289 INFO L495 AbstractCegarLoop]: Abstraction has 29290 states and 42923 transitions. [2022-11-16 20:11:22,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 20:11:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 29290 states and 42923 transitions. [2022-11-16 20:11:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 20:11:22,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:22,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 20:11:22,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:11:22,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1000240704, now seen corresponding path program 1 times [2022-11-16 20:11:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:22,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961294086] [2022-11-16 20:11:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:22,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 20:11:24,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:24,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961294086] [2022-11-16 20:11:24,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961294086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:24,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:24,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:11:24,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793186577] [2022-11-16 20:11:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:24,019 INFO L87 Difference]: Start difference. First operand 29290 states and 42923 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 20:11:26,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:28,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:31,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:33,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:36,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:11:40,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:42,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:44,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:11:46,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:11:50,323 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 [] [2022-11-16 20:11:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:50,433 INFO L93 Difference]: Finished difference Result 79886 states and 117681 transitions. [2022-11-16 20:11:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-11-16 20:11:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:50,710 INFO L225 Difference]: With dead ends: 79886 [2022-11-16 20:11:50,710 INFO L226 Difference]: Without dead ends: 50607 [2022-11-16 20:11:50,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:50,830 INFO L413 NwaCegarLoop]: 3213 mSDtfsCounter, 2492 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2494 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:50,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2494 Valid, 5656 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 596 Invalid, 7 Unknown, 0 Unchecked, 24.9s Time] [2022-11-16 20:11:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50607 states. [2022-11-16 20:11:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50607 to 50510. [2022-11-16 20:11:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50510 states, 32564 states have (on average 1.3765815010440978) internal successors, (44827), 33236 states have internal predecessors, (44827), 14489 states have call successors, (14489), 3610 states have call predecessors, (14489), 3456 states have return successors, (15017), 13807 states have call predecessors, (15017), 14477 states have call successors, (15017) [2022-11-16 20:11:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50510 states to 50510 states and 74333 transitions. [2022-11-16 20:11:54,178 INFO L78 Accepts]: Start accepts. Automaton has 50510 states and 74333 transitions. Word has length 92 [2022-11-16 20:11:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:54,179 INFO L495 AbstractCegarLoop]: Abstraction has 50510 states and 74333 transitions. [2022-11-16 20:11:54,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 20:11:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 50510 states and 74333 transitions. [2022-11-16 20:11:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-16 20:11:54,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:54,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 20:11:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:11:54,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:11:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -184482960, now seen corresponding path program 1 times [2022-11-16 20:11:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:54,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25465603] [2022-11-16 20:11:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 20:11:55,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:55,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25465603] [2022-11-16 20:11:55,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25465603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:55,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:55,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:11:55,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499402970] [2022-11-16 20:11:55,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:55,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:55,117 INFO L87 Difference]: Start difference. First operand 50510 states and 74333 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:11:57,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:00,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:03,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:07,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:09,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:11,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:17,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:12:20,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:20,546 INFO L93 Difference]: Finished difference Result 82608 states and 120706 transitions. [2022-11-16 20:12:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:20,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-11-16 20:12:20,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:21,137 INFO L225 Difference]: With dead ends: 82608 [2022-11-16 20:12:21,137 INFO L226 Difference]: Without dead ends: 82605 [2022-11-16 20:12:21,170 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 [2022-11-16 20:12:21,171 INFO L413 NwaCegarLoop]: 3346 mSDtfsCounter, 2978 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 6042 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:21,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 6042 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 614 Invalid, 5 Unknown, 0 Unchecked, 23.4s Time] [2022-11-16 20:12:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82605 states. [2022-11-16 20:12:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82605 to 82594. [2022-11-16 20:12:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82594 states, 52888 states have (on average 1.367852821055816) internal successors, (72343), 53701 states have internal predecessors, (72343), 23871 states have call successors, (23871), 5994 states have call predecessors, (23871), 5834 states have return successors, (24479), 23162 states have call predecessors, (24479), 23859 states have call successors, (24479) [2022-11-16 20:12:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82594 states to 82594 states and 120693 transitions. [2022-11-16 20:12:25,804 INFO L78 Accepts]: Start accepts. Automaton has 82594 states and 120693 transitions. Word has length 97 [2022-11-16 20:12:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:25,805 INFO L495 AbstractCegarLoop]: Abstraction has 82594 states and 120693 transitions. [2022-11-16 20:12:25,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:12:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 82594 states and 120693 transitions. [2022-11-16 20:12:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 20:12:25,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:25,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 20:12:25,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:12:25,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1424974240, now seen corresponding path program 1 times [2022-11-16 20:12:25,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:25,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632709500] [2022-11-16 20:12:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 20:12:26,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:26,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632709500] [2022-11-16 20:12:26,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632709500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:26,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:26,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:12:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005656327] [2022-11-16 20:12:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:26,765 INFO L87 Difference]: Start difference. First operand 82594 states and 120693 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:12:28,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:31,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:35,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:37,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:12:42,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:48,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:48,245 INFO L93 Difference]: Finished difference Result 82633 states and 120719 transitions. [2022-11-16 20:12:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-11-16 20:12:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:48,661 INFO L225 Difference]: With dead ends: 82633 [2022-11-16 20:12:48,661 INFO L226 Difference]: Without dead ends: 82630 [2022-11-16 20:12:48,697 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 [2022-11-16 20:12:48,698 INFO L413 NwaCegarLoop]: 3346 mSDtfsCounter, 2965 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 6045 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:48,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 6045 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 613 Invalid, 5 Unknown, 0 Unchecked, 19.2s Time] [2022-11-16 20:12:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82630 states. [2022-11-16 20:12:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82630 to 82619. [2022-11-16 20:12:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82619 states, 52901 states have (on average 1.3677624241507722) internal successors, (72356), 53722 states have internal predecessors, (72356), 23871 states have call successors, (23871), 5998 states have call predecessors, (23871), 5846 states have return successors, (24479), 23162 states have call predecessors, (24479), 23859 states have call successors, (24479) [2022-11-16 20:12:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82619 states to 82619 states and 120706 transitions. [2022-11-16 20:12:52,911 INFO L78 Accepts]: Start accepts. Automaton has 82619 states and 120706 transitions. Word has length 98 [2022-11-16 20:12:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:52,912 INFO L495 AbstractCegarLoop]: Abstraction has 82619 states and 120706 transitions. [2022-11-16 20:12:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:12:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 82619 states and 120706 transitions. [2022-11-16 20:12:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 20:12:52,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:52,915 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 20:12:52,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 20:12:52,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1225493389, now seen corresponding path program 1 times [2022-11-16 20:12:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:52,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706150778] [2022-11-16 20:12:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:52,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 20:12:54,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:54,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706150778] [2022-11-16 20:12:54,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706150778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:54,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:54,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:12:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285098025] [2022-11-16 20:12:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:54,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:54,045 INFO L87 Difference]: Start difference. First operand 82619 states and 120706 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:12:56,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:12:58,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:01,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:04,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:13:09,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:15,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:16,013 INFO L93 Difference]: Finished difference Result 82634 states and 120720 transitions. [2022-11-16 20:13:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:13:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-11-16 20:13:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:16,399 INFO L225 Difference]: With dead ends: 82634 [2022-11-16 20:13:16,400 INFO L226 Difference]: Without dead ends: 82631 [2022-11-16 20:13:16,424 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 [2022-11-16 20:13:16,425 INFO L413 NwaCegarLoop]: 3346 mSDtfsCounter, 2962 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 6048 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:16,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 6048 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 612 Invalid, 6 Unknown, 0 Unchecked, 19.4s Time] [2022-11-16 20:13:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82631 states. [2022-11-16 20:13:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82631 to 82620. [2022-11-16 20:13:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82620 states, 52902 states have (on average 1.3677554723828966) internal successors, (72357), 53723 states have internal predecessors, (72357), 23871 states have call successors, (23871), 5998 states have call predecessors, (23871), 5846 states have return successors, (24479), 23162 states have call predecessors, (24479), 23859 states have call successors, (24479) [2022-11-16 20:13:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82620 states to 82620 states and 120707 transitions. [2022-11-16 20:13:20,431 INFO L78 Accepts]: Start accepts. Automaton has 82620 states and 120707 transitions. Word has length 99 [2022-11-16 20:13:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:13:20,431 INFO L495 AbstractCegarLoop]: Abstraction has 82620 states and 120707 transitions. [2022-11-16 20:13:20,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:13:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 82620 states and 120707 transitions. [2022-11-16 20:13:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 20:13:20,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:13:20,434 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 20:13:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:13:20,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:13:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:13:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 663450563, now seen corresponding path program 1 times [2022-11-16 20:13:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:13:20,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132501245] [2022-11-16 20:13:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:13:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 20:13:21,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:13:21,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132501245] [2022-11-16 20:13:21,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132501245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:13:21,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:13:21,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:13:21,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069594902] [2022-11-16 20:13:21,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:13:21,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:13:21,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:13:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:13:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:13:21,116 INFO L87 Difference]: Start difference. First operand 82620 states and 120707 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 20:13:23,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:25,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:28,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:31,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 20:13:35,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:41,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:46,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:13:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:13:47,486 INFO L93 Difference]: Finished difference Result 247648 states and 361947 transitions. [2022-11-16 20:13:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:13:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2022-11-16 20:13:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:13:48,232 INFO L225 Difference]: With dead ends: 247648 [2022-11-16 20:13:48,233 INFO L226 Difference]: Without dead ends: 165039 [2022-11-16 20:13:48,498 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 [2022-11-16 20:13:48,499 INFO L413 NwaCegarLoop]: 3358 mSDtfsCounter, 2962 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:13:48,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 6060 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 619 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2022-11-16 20:13:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165039 states.