./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW --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 d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 --- 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-4e7fbc6 [2022-11-23 14:44:01,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:44:01,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:44:01,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:44:01,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:44:01,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:44:01,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:44:01,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:44:01,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:44:01,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:44:01,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:44:01,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:44:01,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:44:01,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:44:01,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:44:01,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:44:01,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:44:01,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:44:01,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:44:01,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:44:01,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:44:01,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:44:01,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:44:01,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:44:01,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:44:01,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:44:01,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:44:01,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:44:01,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:44:01,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:44:01,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:44:01,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:44:01,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:44:01,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:44:01,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:44:01,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:44:01,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:44:01,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:44:01,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:44:01,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:44:01,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:44:01,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:44:01,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:44:01,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:44:01,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:44:01,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:44:01,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:44:01,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:44:01,935 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:44:01,936 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:44:01,936 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:44:01,936 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:44:01,937 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:44:01,938 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:44:01,938 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:44:01,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:44:01,939 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:44:01,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:44:01,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:44:01,940 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:44:01,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:44:01,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:44:01,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:44:01,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:44:01,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:44:01,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:44:01,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:44:01,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:44:01,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:44:01,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:44:01,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:44:01,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:01,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:44:01,947 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:44:01,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:44:01,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:44:01,948 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:44:01,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:44:01,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:44:01,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:44:01,949 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_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 [2022-11-23 14:44:02,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:44:02,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:44:02,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:44:02,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:44:02,358 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:44:02,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-23 14:44:05,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:44:06,319 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:44:06,320 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-23 14:44:06,370 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/data/1c657c5fc/184f390dbe334c67916e674962f5cea6/FLAG8a778fb04 [2022-11-23 14:44:06,387 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/data/1c657c5fc/184f390dbe334c67916e674962f5cea6 [2022-11-23 14:44:06,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:44:06,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:44:06,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:06,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:44:06,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:44:06,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:06" (1/1) ... [2022-11-23 14:44:06,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b583be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:06, skipping insertion in model container [2022-11-23 14:44:06,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:06" (1/1) ... [2022-11-23 14:44:06,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:44:06,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:44:09,464 WARN L237 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_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2022-11-23 14:44:09,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:09,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:44:10,367 WARN L237 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_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2022-11-23 14:44:10,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:10,683 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:44:10,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10 WrapperNode [2022-11-23 14:44:10,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:10,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:10,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:44:10,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:44:10,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:10,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,372 INFO L138 Inliner]: procedures = 359, calls = 7223, calls flagged for inlining = 183, calls inlined = 137, statements flattened = 13695 [2022-11-23 14:44:11,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:11,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:44:11,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:44:11,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:44:11,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:11,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:12,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:44:12,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:44:12,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:44:12,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:44:12,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (1/1) ... [2022-11-23 14:44:12,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:12,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:12,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:44:12,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:44:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-23 14:44:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-23 14:44:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-23 14:44:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-23 14:44:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-23 14:44:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-23 14:44:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:44:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:44:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:44:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:44:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_recv_bulk_msg [2022-11-23 14:44:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_recv_bulk_msg [2022-11-23 14:44:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:44:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:44:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_save_screen [2022-11-23 14:44:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_save_screen [2022-11-23 14:44:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_buffers [2022-11-23 14:44:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_buffers [2022-11-23 14:44:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_disconnect [2022-11-23 14:44:12,263 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_disconnect [2022-11-23 14:44:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_deinit [2022-11-23 14:44:12,263 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_deinit [2022-11-23 14:44:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_byte [2022-11-23 14:44:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_byte [2022-11-23 14:44:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:44:12,265 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:44:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-23 14:44:12,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-23 14:44:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:44:12,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:44:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_cursor [2022-11-23 14:44:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_cursor [2022-11-23 14:44:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-23 14:44:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-23 14:44:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 14:44:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 14:44:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_word [2022-11-23 14:44:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_word [2022-11-23 14:44:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:44:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:44:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetReg [2022-11-23 14:44:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetReg [2022-11-23 14:44:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 14:44:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 14:44:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb_lock_and_check [2022-11-23 14:44:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb_lock_and_check [2022-11-23 14:44:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:44:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure take_over_console [2022-11-23 14:44:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure take_over_console [2022-11-23 14:44:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_sisusb_valid [2022-11-23 14:44:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_sisusb_valid [2022-11-23 14:44:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:44:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegOR [2022-11-23 14:44:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegOR [2022-11-23 14:44:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2022-11-23 14:44:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2022-11-23 14:44:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 14:44:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_check_rbc [2022-11-23 14:44:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_check_rbc [2022-11-23 14:44:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:44:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:44:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:44:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:44:12,282 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_outurb_available [2022-11-23 14:44:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_outurb_available [2022-11-23 14:44:12,282 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_kill_all_busy [2022-11-23 14:44:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_kill_all_busy [2022-11-23 14:44:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:44:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:44:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-23 14:44:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-23 14:44:12,283 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getidxreg [2022-11-23 14:44:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getidxreg [2022-11-23 14:44:12,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 14:44:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 14:44:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-23 14:44:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-23 14:44:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_writeb [2022-11-23 14:44:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_writeb [2022-11-23 14:44:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:44:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:44:12,287 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:44:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_default_mode [2022-11-23 14:44:12,287 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_default_mode [2022-11-23 14:44:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_byte [2022-11-23 14:44:12,288 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_byte [2022-11-23 14:44:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:44:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_DisplayOn [2022-11-23 14:44:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_DisplayOn [2022-11-23 14:44:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregandor [2022-11-23 14:44:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregandor [2022-11-23 14:44:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_mem_bulk [2022-11-23 14:44:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_mem_bulk [2022-11-23 14:44:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-23 14:44:12,290 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-23 14:44:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbdummycon_init [2022-11-23 14:44:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbdummycon_init [2022-11-23 14:44:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-23 14:44:12,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-23 14:44:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:44:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetReg [2022-11-23 14:44:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetReg [2022-11-23 14:44:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_do_font_op [2022-11-23 14:44:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_do_font_op [2022-11-23 14:44:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_init_gfxdevice [2022-11-23 14:44:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_init_gfxdevice [2022-11-23 14:44:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegByte [2022-11-23 14:44:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegByte [2022-11-23 14:44:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_urbs [2022-11-23 14:44:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_urbs [2022-11-23 14:44:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:44:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:44:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bridge_packet [2022-11-23 14:44:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bridge_packet [2022-11-23 14:44:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-23 14:44:12,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-23 14:44:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-23 14:44:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-23 14:44:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_ioctl [2022-11-23 14:44:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_ioctl [2022-11-23 14:44:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_word [2022-11-23 14:44:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_word [2022-11-23 14:44:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb [2022-11-23 14:44:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb [2022-11-23 14:44:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:44:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:44:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_cursor [2022-11-23 14:44:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_cursor [2022-11-23 14:44:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_is_inactive [2022-11-23 14:44:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_is_inactive [2022-11-23 14:44:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 14:44:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 14:44:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_clear_vram [2022-11-23 14:44:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_clear_vram [2022-11-23 14:44:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_pci_config [2022-11-23 14:44:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_pci_config [2022-11-23 14:44:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:44:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 14:44:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 14:44:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bulk_msg [2022-11-23 14:44:12,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bulk_msg [2022-11-23 14:44:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-23 14:44:12,324 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-23 14:44:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:44:12,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:44:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_readb [2022-11-23 14:44:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_readb [2022-11-23 14:44:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregor [2022-11-23 14:44:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregor [2022-11-23 14:44:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:44:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-23 14:44:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-23 14:44:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 14:44:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 14:44:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:44:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_packet [2022-11-23 14:44:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_packet [2022-11-23 14:44:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_long [2022-11-23 14:44:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_long [2022-11-23 14:44:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_reset_text_mode [2022-11-23 14:44:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_reset_text_mode [2022-11-23 14:44:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSB_InitPtr [2022-11-23 14:44:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSB_InitPtr [2022-11-23 14:44:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:44:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_pci_config [2022-11-23 14:44:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_pci_config [2022-11-23 14:44:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:44:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxreg [2022-11-23 14:44:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxreg [2022-11-23 14:44:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegANDOR [2022-11-23 14:44:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegANDOR [2022-11-23 14:44:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:44:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:44:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_wait_all_out_complete [2022-11-23 14:44:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_wait_all_out_complete [2022-11-23 14:44:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:44:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:44:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegAND [2022-11-23 14:44:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegAND [2022-11-23 14:44:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregand [2022-11-23 14:44:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregand [2022-11-23 14:44:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-23 14:44:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-23 14:44:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetSegmentReg [2022-11-23 14:44:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetSegmentReg [2022-11-23 14:44:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_copy_memory [2022-11-23 14:44:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_copy_memory [2022-11-23 14:44:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setreg [2022-11-23 14:44:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setreg [2022-11-23 14:44:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2022-11-23 14:44:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2022-11-23 14:44:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_set_start_address [2022-11-23 14:44:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_set_start_address [2022-11-23 14:44:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-23 14:44:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-23 14:44:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:44:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:44:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_WriteDAC [2022-11-23 14:44:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_WriteDAC [2022-11-23 14:44:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_mem_bulk [2022-11-23 14:44:12,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_mem_bulk [2022-11-23 14:44:12,334 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getreg [2022-11-23 14:44:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getreg [2022-11-23 14:44:12,335 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSBSetMode [2022-11-23 14:44:12,335 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSBSetMode [2022-11-23 14:44:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2022-11-23 14:44:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2022-11-23 14:44:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_init [2022-11-23 14:44:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_init [2022-11-23 14:44:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-23 14:44:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-23 14:44:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:44:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_long [2022-11-23 14:44:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_long [2022-11-23 14:44:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetRegByte [2022-11-23 14:44:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetRegByte [2022-11-23 14:44:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:44:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:44:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_triggersr16 [2022-11-23 14:44:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_triggersr16 [2022-11-23 14:44:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 14:44:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 14:44:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:44:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:44:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_all_free [2022-11-23 14:44:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_all_free [2022-11-23 14:44:13,529 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:44:13,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:44:54,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:45:01,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:45:01,223 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:45:01,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:01 BoogieIcfgContainer [2022-11-23 14:45:01,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:45:01,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:45:01,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:45:01,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:45:01,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:06" (1/3) ... [2022-11-23 14:45:01,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f77a777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:01, skipping insertion in model container [2022-11-23 14:45:01,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:10" (2/3) ... [2022-11-23 14:45:01,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f77a777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:45:01, skipping insertion in model container [2022-11-23 14:45:01,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:45:01" (3/3) ... [2022-11-23 14:45:01,255 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-23 14:45:01,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:45:01,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:45:01,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:45:01,403 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;@b84fccf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:45:01,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:45:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 2233 states, 1362 states have (on average 1.3193832599118942) internal successors, (1797), 1389 states have internal predecessors, (1797), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2022-11-23 14:45:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:45:01,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:01,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:01,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:01,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash 515982655, now seen corresponding path program 1 times [2022-11-23 14:45:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:01,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095479135] [2022-11-23 14:45:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:03,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:03,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095479135] [2022-11-23 14:45:03,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095479135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:03,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:45:03,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:45:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291692724] [2022-11-23 14:45:03,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:03,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:45:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:45:03,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:45:03,417 INFO L87 Difference]: Start difference. First operand has 2233 states, 1362 states have (on average 1.3193832599118942) internal successors, (1797), 1389 states have internal predecessors, (1797), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:45:07,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:08,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:12,206 INFO L93 Difference]: Finished difference Result 4459 states and 6713 transitions. [2022-11-23 14:45:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:45:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-23 14:45:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:12,272 INFO L225 Difference]: With dead ends: 4459 [2022-11-23 14:45:12,273 INFO L226 Difference]: Without dead ends: 2229 [2022-11-23 14:45:12,302 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 [2022-11-23 14:45:12,308 INFO L413 NwaCegarLoop]: 2823 mSDtfsCounter, 0 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:12,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5645 Invalid, 996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-23 14:45:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-11-23 14:45:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2229. [2022-11-23 14:45:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1361 states have (on average 1.3181484202792064) internal successors, (1794), 1386 states have internal predecessors, (1794), 765 states have call successors, (765), 104 states have call predecessors, (765), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-23 14:45:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3318 transitions. [2022-11-23 14:45:12,598 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3318 transitions. Word has length 14 [2022-11-23 14:45:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:12,600 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3318 transitions. [2022-11-23 14:45:12,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:45:12,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3318 transitions. [2022-11-23 14:45:12,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:45:12,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:12,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:12,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:45:12,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:12,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1392726847, now seen corresponding path program 1 times [2022-11-23 14:45:12,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:12,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001255218] [2022-11-23 14:45:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:12,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:14,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:14,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001255218] [2022-11-23 14:45:14,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001255218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:14,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243555270] [2022-11-23 14:45:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:14,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:14,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:14,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:14,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:45:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:17,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 8415 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:45:17,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:45:17,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243555270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:17,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:45:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972851424] [2022-11-23 14:45:17,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:45:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:45:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:17,466 INFO L87 Difference]: Start difference. First operand 2229 states and 3318 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:45:20,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:23,238 INFO L93 Difference]: Finished difference Result 2231 states and 3319 transitions. [2022-11-23 14:45:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:45:23,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2022-11-23 14:45:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:23,262 INFO L225 Difference]: With dead ends: 2231 [2022-11-23 14:45:23,262 INFO L226 Difference]: Without dead ends: 2228 [2022-11-23 14:45:23,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:23,267 INFO L413 NwaCegarLoop]: 2817 mSDtfsCounter, 3303 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:23,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3303 Valid, 2818 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 14:45:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-11-23 14:45:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2022-11-23 14:45:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1361 states have (on average 1.3174136664217486) internal successors, (1793), 1385 states have internal predecessors, (1793), 764 states have call successors, (764), 104 states have call predecessors, (764), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-23 14:45:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3316 transitions. [2022-11-23 14:45:23,463 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3316 transitions. Word has length 15 [2022-11-23 14:45:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:23,464 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 3316 transitions. [2022-11-23 14:45:23,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:45:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3316 transitions. [2022-11-23 14:45:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:45:23,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:23,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:23,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:23,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 14:45:23,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:23,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:23,691 INFO L85 PathProgramCache]: Analyzing trace with hash 222408129, now seen corresponding path program 1 times [2022-11-23 14:45:23,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:23,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116385705] [2022-11-23 14:45:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:25,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:25,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116385705] [2022-11-23 14:45:25,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116385705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:25,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389471128] [2022-11-23 14:45:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:25,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:25,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:25,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:45:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:28,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 8417 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:45:28,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:45:28,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:28,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389471128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:28,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:28,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:45:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48256304] [2022-11-23 14:45:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:28,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:45:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:28,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:45:28,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:28,265 INFO L87 Difference]: Start difference. First operand 2228 states and 3316 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:45:31,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:33,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:38,850 INFO L93 Difference]: Finished difference Result 5921 states and 8823 transitions. [2022-11-23 14:45:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:45:38,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-23 14:45:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:38,894 INFO L225 Difference]: With dead ends: 5921 [2022-11-23 14:45:38,895 INFO L226 Difference]: Without dead ends: 3702 [2022-11-23 14:45:38,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:38,920 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 2369 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:38,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 6953 Invalid, 1278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-23 14:45:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2022-11-23 14:45:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3699. [2022-11-23 14:45:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3699 states, 2263 states have (on average 1.309765797613787) internal successors, (2964), 2314 states have internal predecessors, (2964), 1254 states have call successors, (1254), 180 states have call predecessors, (1254), 181 states have return successors, (1261), 1230 states have call predecessors, (1261), 1236 states have call successors, (1261) [2022-11-23 14:45:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 5479 transitions. [2022-11-23 14:45:39,304 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 5479 transitions. Word has length 16 [2022-11-23 14:45:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:39,305 INFO L495 AbstractCegarLoop]: Abstraction has 3699 states and 5479 transitions. [2022-11-23 14:45:39,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:45:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 5479 transitions. [2022-11-23 14:45:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:45:39,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:39,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:39,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:45:39,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:39,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1697728894, now seen corresponding path program 1 times [2022-11-23 14:45:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:39,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387183290] [2022-11-23 14:45:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:45:40,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387183290] [2022-11-23 14:45:40,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387183290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595795699] [2022-11-23 14:45:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:40,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:40,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:40,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:45:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:43,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 8419 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:45:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:45:43,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:43,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595795699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:43,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:43,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:45:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241199338] [2022-11-23 14:45:43,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:43,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:45:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:45:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:43,158 INFO L87 Difference]: Start difference. First operand 3699 states and 5479 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:45:46,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:45:48,324 INFO L93 Difference]: Finished difference Result 3701 states and 5480 transitions. [2022-11-23 14:45:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:45:48,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-23 14:45:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:45:48,358 INFO L225 Difference]: With dead ends: 3701 [2022-11-23 14:45:48,359 INFO L226 Difference]: Without dead ends: 3692 [2022-11-23 14:45:48,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:48,366 INFO L413 NwaCegarLoop]: 2816 mSDtfsCounter, 3299 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:45:48,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3299 Valid, 2817 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 14:45:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2022-11-23 14:45:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 3692. [2022-11-23 14:45:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 2259 states have (on average 1.3072155821159805) internal successors, (2953), 2309 states have internal predecessors, (2953), 1251 states have call successors, (1251), 179 states have call predecessors, (1251), 181 states have return successors, (1260), 1229 states have call predecessors, (1260), 1235 states have call successors, (1260) [2022-11-23 14:45:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 5464 transitions. [2022-11-23 14:45:48,695 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 5464 transitions. Word has length 17 [2022-11-23 14:45:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:45:48,695 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 5464 transitions. [2022-11-23 14:45:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:45:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 5464 transitions. [2022-11-23 14:45:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:45:48,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:45:48,707 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:45:48,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:45:48,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:48,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:45:48,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:45:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2138466533, now seen corresponding path program 1 times [2022-11-23 14:45:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:45:48,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866903362] [2022-11-23 14:45:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:45:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:45:50,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:45:50,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866903362] [2022-11-23 14:45:50,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866903362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:45:50,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158894870] [2022-11-23 14:45:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:45:50,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:45:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:45:50,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:45:50,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:45:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:45:53,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 8597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:45:53,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:45:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:45:53,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:45:53,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158894870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:45:53,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:45:53,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 14:45:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127640395] [2022-11-23 14:45:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:45:53,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:45:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:45:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:45:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:45:53,288 INFO L87 Difference]: Start difference. First operand 3692 states and 5464 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 14:45:55,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:45:57,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:46:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:46:01,351 INFO L93 Difference]: Finished difference Result 7587 states and 11275 transitions. [2022-11-23 14:46:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:46:01,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-11-23 14:46:01,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:46:01,385 INFO L225 Difference]: With dead ends: 7587 [2022-11-23 14:46:01,385 INFO L226 Difference]: Without dead ends: 3904 [2022-11-23 14:46:01,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:46:01,417 INFO L413 NwaCegarLoop]: 2848 mSDtfsCounter, 137 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:46:01,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 5601 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 14:46:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2022-11-23 14:46:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3880. [2022-11-23 14:46:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2385 states have (on average 1.3157232704402515) internal successors, (3138), 2442 states have internal predecessors, (3138), 1313 states have call successors, (1313), 179 states have call predecessors, (1313), 181 states have return successors, (1327), 1290 states have call predecessors, (1327), 1297 states have call successors, (1327) [2022-11-23 14:46:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5778 transitions. [2022-11-23 14:46:01,750 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5778 transitions. Word has length 36 [2022-11-23 14:46:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:46:01,750 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 5778 transitions. [2022-11-23 14:46:01,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 14:46:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5778 transitions. [2022-11-23 14:46:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:46:01,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:46:01,753 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:46:01,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:46:01,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:46:01,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:46:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:46:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1999859984, now seen corresponding path program 1 times [2022-11-23 14:46:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:46:01,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792545353] [2022-11-23 14:46:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:46:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:46:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:46:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:46:03,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:46:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792545353] [2022-11-23 14:46:03,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792545353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:46:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378118428] [2022-11-23 14:46:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:46:03,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:46:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:46:03,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:46:03,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d4a62be-39ad-4ccf-aa5f-8b824e0e5ff8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:46:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:46:05,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 8571 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:46:05,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:46:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:46:05,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:46:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:46:05,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378118428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:46:05,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [323137290] [2022-11-23 14:46:05,845 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-23 14:46:05,846 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:46:05,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:46:05,857 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:46:05,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:47:56,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 551 treesize of output 443 [2022-11-23 14:48:28,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 551 treesize of output 443 [2022-11-23 14:54:58,998 WARN L233 SmtUtils]: Spent 17.22s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:55:16,397 WARN L233 SmtUtils]: Spent 17.32s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:55:34,944 WARN L233 SmtUtils]: Spent 18.39s on a formula simplification. DAG size of input: 13902 DAG size of output: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:55:51,941 WARN L233 SmtUtils]: Spent 16.82s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:56:09,286 WARN L233 SmtUtils]: Spent 17.29s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:56:26,281 WARN L233 SmtUtils]: Spent 16.92s on a formula simplification. DAG size of input: 13902 DAG size of output: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:56:43,029 WARN L233 SmtUtils]: Spent 16.63s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:56:59,631 WARN L233 SmtUtils]: Spent 16.55s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:57:17,722 WARN L233 SmtUtils]: Spent 18.02s on a formula simplification. DAG size of input: 13902 DAG size of output: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:57:34,868 WARN L233 SmtUtils]: Spent 17.01s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:57:51,595 WARN L233 SmtUtils]: Spent 16.66s on a formula simplification that was a NOOP. DAG size: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2022-11-23 14:58:08,984 WARN L233 SmtUtils]: Spent 17.33s on a formula simplification. DAG size of input: 13902 DAG size of output: 13783 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)