./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI --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 c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc --- 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-5e519f3 [2022-11-03 04:09:35,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:35,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:35,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:35,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:35,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:35,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:35,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:35,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:35,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:35,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:35,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:35,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:35,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:35,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:35,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:35,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:35,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:35,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:35,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:35,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:35,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:35,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:35,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:35,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:35,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:35,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:35,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:35,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:35,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:35,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:35,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:35,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:35,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:35,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:35,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:35,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:35,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:35,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:35,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:35,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:35,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:09:35,658 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:35,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:35,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:35,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:35,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:35,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:35,664 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:35,664 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:35,664 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:35,664 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:35,666 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:35,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:35,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:35,666 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:35,667 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:35,667 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:35,667 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:35,667 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:35,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:35,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:35,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:35,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:35,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:35,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:35,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:35,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:35,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:35,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:35,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:35,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:35,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:35,673 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:35,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:35,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:35,674 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:35,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:35,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:35,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:35,675 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_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc [2022-11-03 04:09:36,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:36,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:36,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:36,062 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:36,063 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:36,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2022-11-03 04:09:36,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/data/284fd32a9/f97c00c9c6184d85a737289cd0991ff5/FLAG17120f4cf [2022-11-03 04:09:37,185 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:37,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2022-11-03 04:09:37,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/data/284fd32a9/f97c00c9c6184d85a737289cd0991ff5/FLAG17120f4cf [2022-11-03 04:09:37,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/data/284fd32a9/f97c00c9c6184d85a737289cd0991ff5 [2022-11-03 04:09:37,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:37,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:37,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:37,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:37,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:37,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:37" (1/1) ... [2022-11-03 04:09:37,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d8f8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:37, skipping insertion in model container [2022-11-03 04:09:37,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:37" (1/1) ... [2022-11-03 04:09:37,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:37,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:38,255 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2022-11-03 04:09:38,256 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2022-11-03 04:09:38,644 WARN L230 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_82660dbe-ed62-4055-bcb6-8678d40932a1/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2022-11-03 04:09:40,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:40,286 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:40,431 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2022-11-03 04:09:40,431 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2022-11-03 04:09:40,452 WARN L230 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_82660dbe-ed62-4055-bcb6-8678d40932a1/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2022-11-03 04:09:40,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:41,035 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:41,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41 WrapperNode [2022-11-03 04:09:41,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:41,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:41,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:41,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:41,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,540 INFO L138 Inliner]: procedures = 349, calls = 4495, calls flagged for inlining = 165, calls inlined = 163, statements flattened = 7969 [2022-11-03 04:09:41,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:41,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:41,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:41,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:41,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:41,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:42,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:42,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:42,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:42,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:42,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:42,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:42,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (1/1) ... [2022-11-03 04:09:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:42,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:42,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:42,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_tx_chars [2022-11-03 04:09:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_tx_chars [2022-11-03 04:09:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure uart_poll_timeout [2022-11-03 04:09:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_poll_timeout [2022-11-03 04:09:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2022-11-03 04:09:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2022-11-03 04:09:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_rx_chars [2022-11-03 04:09:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_rx_chars [2022-11-03 04:09:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_out_sync [2022-11-03 04:09:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_out_sync [2022-11-03 04:09:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_do_pm [2022-11-03 04:09:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_do_pm [2022-11-03 04:09:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure serial_dl_write [2022-11-03 04:09:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_dl_write [2022-11-03 04:09:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_read_divisor_id [2022-11-03 04:09:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_read_divisor_id [2022-11-03 04:09:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:09:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:09:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_mctrl [2022-11-03 04:09:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_mctrl [2022-11-03 04:09:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 04:09:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 04:09:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_device [2022-11-03 04:09:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_device [2022-11-03 04:09:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_request_port [2022-11-03 04:09:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_request_port [2022-11-03 04:09:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:09:42,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:09:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_stop_tx [2022-11-03 04:09:42,300 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_stop_tx [2022-11-03 04:09:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure uart_unregister_driver [2022-11-03 04:09:42,300 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_unregister_driver [2022-11-03 04:09:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2022-11-03 04:09:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2022-11-03 04:09:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_prep_slave_single [2022-11-03 04:09:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_prep_slave_single [2022-11-03 04:09:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2022-11-03 04:09:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2022-11-03 04:09:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_device_control [2022-11-03 04:09:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_device_control [2022-11-03 04:09:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 04:09:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 04:09:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_5 [2022-11-03 04:09:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_5 [2022-11-03 04:09:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 04:09:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 04:09:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_start_tx [2022-11-03 04:09:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_start_tx [2022-11-03 04:09:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 04:09:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 04:09:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 04:09:42,303 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 04:09:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_16550a [2022-11-03 04:09:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_16550a [2022-11-03 04:09:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:09:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:09:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_tx_complete [2022-11-03 04:09:42,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_tx_complete [2022-11-03 04:09:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:09:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 04:09:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure dma_release_channel [2022-11-03 04:09:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_release_channel [2022-11-03 04:09:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure check_name [2022-11-03 04:09:42,305 INFO L138 BoogieDeclarations]: Found implementation of procedure check_name [2022-11-03 04:09:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 04:09:42,306 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 04:09:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure serial_in [2022-11-03 04:09:42,306 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_in [2022-11-03 04:09:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_handle_irq [2022-11-03 04:09:42,306 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_handle_irq [2022-11-03 04:09:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:09:42,307 INFO L130 BoogieDeclarations]: Found specification of procedure broken_efr [2022-11-03 04:09:42,307 INFO L138 BoogieDeclarations]: Found implementation of procedure broken_efr [2022-11-03 04:09:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_submit [2022-11-03 04:09:42,323 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_submit [2022-11-03 04:09:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_modem_status [2022-11-03 04:09:42,324 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_modem_status [2022-11-03 04:09:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_startup [2022-11-03 04:09:42,324 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_startup [2022-11-03 04:09:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 04:09:42,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 04:09:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_pnp_exit [2022-11-03 04:09:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_pnp_exit [2022-11-03 04:09:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure uart_suspend_port [2022-11-03 04:09:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_suspend_port [2022-11-03 04:09:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:09:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_ldisc [2022-11-03 04:09:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_ldisc [2022-11-03 04:09:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure uart_add_one_port [2022-11-03 04:09:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_add_one_port [2022-11-03 04:09:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_port_size [2022-11-03 04:09:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_port_size [2022-11-03 04:09:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 04:09:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 04:09:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 04:09:42,326 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 04:09:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-11-03 04:09:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_tx_dma [2022-11-03 04:09:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_tx_dma [2022-11-03 04:09:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_put_poll_char [2022-11-03 04:09:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_put_poll_char [2022-11-03 04:09:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_release_dma [2022-11-03 04:09:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_release_dma [2022-11-03 04:09:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:09:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_tx_empty [2022-11-03 04:09:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_tx_empty [2022-11-03 04:09:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:09:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_out [2022-11-03 04:09:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_out [2022-11-03 04:09:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure disable_rsa [2022-11-03 04:09:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_rsa [2022-11-03 04:09:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_clear_fifos [2022-11-03 04:09:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_clear_fifos [2022-11-03 04:09:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure serial_out [2022-11-03 04:09:42,329 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_out [2022-11-03 04:09:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure serial_icr_write [2022-11-03 04:09:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_icr_write [2022-11-03 04:09:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 04:09:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 04:09:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 04:09:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 04:09:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_get_poll_char [2022-11-03 04:09:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_get_poll_char [2022-11-03 04:09:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_probe [2022-11-03 04:09:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_probe [2022-11-03 04:09:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure serial_do_unlink [2022-11-03 04:09:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_do_unlink [2022-11-03 04:09:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_termios [2022-11-03 04:09:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_termios [2022-11-03 04:09:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 04:09:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 04:09:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_unregister_port [2022-11-03 04:09:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_unregister_port [2022-11-03 04:09:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_stop_rx [2022-11-03 04:09:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_stop_rx [2022-11-03 04:09:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 04:09:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 04:09:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_request_rsa_resource [2022-11-03 04:09:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_request_rsa_resource [2022-11-03 04:09:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 04:09:42,333 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 04:09:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_isa_init_ports [2022-11-03 04:09:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_isa_init_ports [2022-11-03 04:09:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 04:09:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 04:09:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 04:09:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 04:09:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure is_omap1_8250 [2022-11-03 04:09:42,334 INFO L138 BoogieDeclarations]: Found implementation of procedure is_omap1_8250 [2022-11-03 04:09:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2022-11-03 04:09:42,335 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2022-11-03 04:09:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_verify_port [2022-11-03 04:09:42,335 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_verify_port [2022-11-03 04:09:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 04:09:42,335 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 04:09:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2022-11-03 04:09:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2022-11-03 04:09:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_2 [2022-11-03 04:09:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_2 [2022-11-03 04:09:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure set_io_from_upio [2022-11-03 04:09:42,336 INFO L138 BoogieDeclarations]: Found implementation of procedure set_io_from_upio [2022-11-03 04:09:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2022-11-03 04:09:42,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2022-11-03 04:09:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 04:09:42,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 04:09:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure uart_remove_one_port [2022-11-03 04:09:42,337 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_remove_one_port [2022-11-03 04:09:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:09:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_suspend_port [2022-11-03 04:09:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_suspend_port [2022-11-03 04:09:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_request_dma [2022-11-03 04:09:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_request_dma [2022-11-03 04:09:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 04:09:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 04:09:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_get_mctrl [2022-11-03 04:09:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_get_mctrl [2022-11-03 04:09:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2022-11-03 04:09:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2022-11-03 04:09:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_release_rsa_resource [2022-11-03 04:09:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_release_rsa_resource [2022-11-03 04:09:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_request_slave_channel_compat [2022-11-03 04:09:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_request_slave_channel_compat [2022-11-03 04:09:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_release_std_resource [2022-11-03 04:09:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_release_std_resource [2022-11-03 04:09:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_tx_status [2022-11-03 04:09:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_tx_status [2022-11-03 04:09:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 04:09:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 04:09:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_in [2022-11-03 04:09:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_in [2022-11-03 04:09:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:09:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_type [2022-11-03 04:09:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_type [2022-11-03 04:09:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_register_8250_port [2022-11-03 04:09:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_register_8250_port [2022-11-03 04:09:42,341 INFO L130 BoogieDeclarations]: Found specification of procedure uart_write_wakeup [2022-11-03 04:09:42,341 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_write_wakeup [2022-11-03 04:09:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 04:09:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 04:09:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:09:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:09:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure serial_icr_read [2022-11-03 04:09:42,342 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_icr_read [2022-11-03 04:09:42,342 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_break_ctl [2022-11-03 04:09:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_break_ctl [2022-11-03 04:09:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:09:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_pm [2022-11-03 04:09:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_pm [2022-11-03 04:09:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-11-03 04:09:42,343 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-11-03 04:09:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_do_set_termios [2022-11-03 04:09:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_do_set_termios [2022-11-03 04:09:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure uart_tx_stopped [2022-11-03 04:09:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_tx_stopped [2022-11-03 04:09:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_xmitr [2022-11-03 04:09:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_xmitr [2022-11-03 04:09:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig [2022-11-03 04:09:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig [2022-11-03 04:09:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure serial_dl_read [2022-11-03 04:09:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_dl_read [2022-11-03 04:09:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 04:09:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 04:09:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:09:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 04:09:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 04:09:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-03 04:09:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-03 04:09:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 04:09:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 04:09:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 04:09:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 04:09:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure serial_pnp_remove [2022-11-03 04:09:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_pnp_remove [2022-11-03 04:09:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-03 04:09:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-03 04:09:42,367 INFO L130 BoogieDeclarations]: Found specification of procedure uart_handle_break [2022-11-03 04:09:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_handle_break [2022-11-03 04:09:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:09:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:09:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure serial_index [2022-11-03 04:09:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_index [2022-11-03 04:09:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_rx_complete [2022-11-03 04:09:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_rx_complete [2022-11-03 04:09:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure dma_async_issue_pending [2022-11-03 04:09:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_async_issue_pending [2022-11-03 04:09:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure __stop_tx [2022-11-03 04:09:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __stop_tx [2022-11-03 04:09:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2022-11-03 04:09:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2022-11-03 04:09:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_config_port [2022-11-03 04:09:42,369 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_config_port [2022-11-03 04:09:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 04:09:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 04:09:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 04:09:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 04:09:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_resume [2022-11-03 04:09:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_resume [2022-11-03 04:09:42,370 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_shutdown [2022-11-03 04:09:42,370 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_shutdown [2022-11-03 04:09:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 04:09:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 04:09:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_has_efr [2022-11-03 04:09:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_has_efr [2022-11-03 04:09:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure __enable_rsa [2022-11-03 04:09:42,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __enable_rsa [2022-11-03 04:09:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure serial_pnp_resume [2022-11-03 04:09:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_pnp_resume [2022-11-03 04:09:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_request_std_resource [2022-11-03 04:09:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_request_std_resource [2022-11-03 04:09:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2022-11-03 04:09:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2022-11-03 04:09:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_slave_config [2022-11-03 04:09:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_slave_config [2022-11-03 04:09:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_rx_dma [2022-11-03 04:09:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_rx_dma [2022-11-03 04:09:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 04:09:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 04:09:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 04:09:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 04:09:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_resume_port [2022-11-03 04:09:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_resume_port [2022-11-03 04:09:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure ns16550a_goto_highspeed [2022-11-03 04:09:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ns16550a_goto_highspeed [2022-11-03 04:09:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure size_fifo [2022-11-03 04:09:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure size_fifo [2022-11-03 04:09:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_drvdata [2022-11-03 04:09:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_drvdata [2022-11-03 04:09:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_remove [2022-11-03 04:09:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_remove [2022-11-03 04:09:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_release_port [2022-11-03 04:09:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_release_port [2022-11-03 04:09:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-03 04:09:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-03 04:09:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_enable_ms [2022-11-03 04:09:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_enable_ms [2022-11-03 04:09:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_terminate_all [2022-11-03 04:09:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_terminate_all [2022-11-03 04:09:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2022-11-03 04:09:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2022-11-03 04:09:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_sleep [2022-11-03 04:09:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_sleep [2022-11-03 04:09:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_init_fixed_type_port [2022-11-03 04:09:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_init_fixed_type_port [2022-11-03 04:09:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~VOID [2022-11-03 04:09:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~VOID [2022-11-03 04:09:43,606 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:43,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:44,974 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:10:08,642 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:10:11,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:10:11,359 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:10:11,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:11 BoogieIcfgContainer [2022-11-03 04:10:11,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:10:11,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:10:11,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:10:11,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:10:11,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:37" (1/3) ... [2022-11-03 04:10:11,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232f3821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:11, skipping insertion in model container [2022-11-03 04:10:11,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:41" (2/3) ... [2022-11-03 04:10:11,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232f3821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:10:11, skipping insertion in model container [2022-11-03 04:10:11,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:10:11" (3/3) ... [2022-11-03 04:10:11,376 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2022-11-03 04:10:11,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:10:11,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:10:11,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:10:11,578 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;@4ae4e989, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:10:11,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:10:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 2037 states, 1201 states have (on average 1.357202331390508) internal successors, (1630), 1293 states have internal predecessors, (1630), 687 states have call successors, (687), 148 states have call predecessors, (687), 147 states have return successors, (680), 652 states have call predecessors, (680), 680 states have call successors, (680) [2022-11-03 04:10:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:10:11,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:11,636 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:11,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1890191319, now seen corresponding path program 1 times [2022-11-03 04:10:11,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:11,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017366110] [2022-11-03 04:10:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 04:10:13,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017366110] [2022-11-03 04:10:13,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017366110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:13,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:13,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:10:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937329002] [2022-11-03 04:10:13,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:13,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:10:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:10:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:10:13,091 INFO L87 Difference]: Start difference. First operand has 2037 states, 1201 states have (on average 1.357202331390508) internal successors, (1630), 1293 states have internal predecessors, (1630), 687 states have call successors, (687), 148 states have call predecessors, (687), 147 states have return successors, (680), 652 states have call predecessors, (680), 680 states have call successors, (680) Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 04:10:17,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:21,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:24,372 INFO L93 Difference]: Finished difference Result 5452 states and 7984 transitions. [2022-11-03 04:10:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:10:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 154 [2022-11-03 04:10:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:24,447 INFO L225 Difference]: With dead ends: 5452 [2022-11-03 04:10:24,448 INFO L226 Difference]: Without dead ends: 3383 [2022-11-03 04:10:24,471 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 [2022-11-03 04:10:24,475 INFO L413 NwaCegarLoop]: 3206 mSDtfsCounter, 1953 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 5758 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:24,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 5758 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 687 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 04:10:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2022-11-03 04:10:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3378. [2022-11-03 04:10:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2018 states have (on average 1.3330029732408326) internal successors, (2690), 2150 states have internal predecessors, (2690), 1089 states have call successors, (1089), 271 states have call predecessors, (1089), 270 states have return successors, (1092), 1044 states have call predecessors, (1092), 1088 states have call successors, (1092) [2022-11-03 04:10:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4871 transitions. [2022-11-03 04:10:24,909 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4871 transitions. Word has length 154 [2022-11-03 04:10:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:24,910 INFO L495 AbstractCegarLoop]: Abstraction has 3378 states and 4871 transitions. [2022-11-03 04:10:24,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 04:10:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4871 transitions. [2022-11-03 04:10:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 04:10:24,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:24,950 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:24,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:10:24,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:24,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash 151491970, now seen corresponding path program 1 times [2022-11-03 04:10:24,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:24,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881723510] [2022-11-03 04:10:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:24,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 04:10:27,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881723510] [2022-11-03 04:10:27,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881723510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757677458] [2022-11-03 04:10:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:27,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:27,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:27,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:27,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:10:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:29,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:10:29,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:30,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 04:10:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 04:10:30,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:30,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757677458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:30,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:10:30,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-03 04:10:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227343031] [2022-11-03 04:10:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:30,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:10:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:10:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:10:30,100 INFO L87 Difference]: Start difference. First operand 3378 states and 4871 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 04:10:37,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:40,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:43,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:45,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:48,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:50,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:53,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:55,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:57,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:10:59,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:02,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:04,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:06,492 INFO L93 Difference]: Finished difference Result 6755 states and 9785 transitions. [2022-11-03 04:11:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:11:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 159 [2022-11-03 04:11:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:06,523 INFO L225 Difference]: With dead ends: 6755 [2022-11-03 04:11:06,523 INFO L226 Difference]: Without dead ends: 3386 [2022-11-03 04:11:06,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:11:06,546 INFO L413 NwaCegarLoop]: 2703 mSDtfsCounter, 1 mSDsluCounter, 8260 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10402 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:06,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10402 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1400 Invalid, 11 Unknown, 0 Unchecked, 36.1s Time] [2022-11-03 04:11:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-11-03 04:11:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3386. [2022-11-03 04:11:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 2026 states have (on average 1.332675222112537) internal successors, (2700), 2158 states have internal predecessors, (2700), 1089 states have call successors, (1089), 271 states have call predecessors, (1089), 270 states have return successors, (1092), 1044 states have call predecessors, (1092), 1088 states have call successors, (1092) [2022-11-03 04:11:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4881 transitions. [2022-11-03 04:11:06,744 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4881 transitions. Word has length 159 [2022-11-03 04:11:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:06,746 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 4881 transitions. [2022-11-03 04:11:06,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 04:11:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4881 transitions. [2022-11-03 04:11:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-03 04:11:06,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:06,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:06,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 04:11:06,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:06,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash -696710585, now seen corresponding path program 1 times [2022-11-03 04:11:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:06,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312537253] [2022-11-03 04:11:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 04:11:09,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:09,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312537253] [2022-11-03 04:11:09,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312537253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384413260] [2022-11-03 04:11:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:09,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:09,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:09,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:11:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:11,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 7907 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-03 04:11:11,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 04:11:12,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:11:12,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384413260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:12,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:11:12,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-03 04:11:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285621682] [2022-11-03 04:11:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:12,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:11:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:11:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:11:12,248 INFO L87 Difference]: Start difference. First operand 3386 states and 4881 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 04:11:17,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:21,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:31,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:33,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:38,598 INFO L93 Difference]: Finished difference Result 7865 states and 12374 transitions. [2022-11-03 04:11:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:11:38,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 173 [2022-11-03 04:11:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:38,670 INFO L225 Difference]: With dead ends: 7865 [2022-11-03 04:11:38,670 INFO L226 Difference]: Without dead ends: 7862 [2022-11-03 04:11:38,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:11:38,682 INFO L413 NwaCegarLoop]: 4063 mSDtfsCounter, 3829 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 4554 mSolverCounterSat, 2429 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 7292 SdHoareTripleChecker+Invalid, 6987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2429 IncrementalHoareTripleChecker+Valid, 4554 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:38,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 7292 Invalid, 6987 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2429 Valid, 4554 Invalid, 4 Unknown, 0 Unchecked, 25.8s Time] [2022-11-03 04:11:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7862 states. [2022-11-03 04:11:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7862 to 7610. [2022-11-03 04:11:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7610 states, 4557 states have (on average 1.326750054860654) internal successors, (6046), 4829 states have internal predecessors, (6046), 2418 states have call successors, (2418), 524 states have call predecessors, (2418), 634 states have return successors, (3478), 2444 states have call predecessors, (3478), 2417 states have call successors, (3478) [2022-11-03 04:11:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7610 states to 7610 states and 11942 transitions. [2022-11-03 04:11:39,375 INFO L78 Accepts]: Start accepts. Automaton has 7610 states and 11942 transitions. Word has length 173 [2022-11-03 04:11:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:39,376 INFO L495 AbstractCegarLoop]: Abstraction has 7610 states and 11942 transitions. [2022-11-03 04:11:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 04:11:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 7610 states and 11942 transitions. [2022-11-03 04:11:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-03 04:11:39,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:39,418 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:39,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-03 04:11:39,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1194055118, now seen corresponding path program 1 times [2022-11-03 04:11:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:39,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963898107] [2022-11-03 04:11:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-03 04:11:40,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:40,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963898107] [2022-11-03 04:11:40,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963898107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:40,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:40,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:11:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331678077] [2022-11-03 04:11:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:11:40,722 INFO L87 Difference]: Start difference. First operand 7610 states and 11942 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 04:11:43,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:48,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:50,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:52,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:11:55,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:00,199 INFO L93 Difference]: Finished difference Result 22776 states and 35912 transitions. [2022-11-03 04:12:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:12:00,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 225 [2022-11-03 04:12:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:00,344 INFO L225 Difference]: With dead ends: 22776 [2022-11-03 04:12:00,344 INFO L226 Difference]: Without dead ends: 15175 [2022-11-03 04:12:00,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:12:00,399 INFO L413 NwaCegarLoop]: 3406 mSDtfsCounter, 2843 mSDsluCounter, 10266 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 12937 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:00,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2847 Valid, 12937 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1011 Invalid, 3 Unknown, 0 Unchecked, 18.8s Time] [2022-11-03 04:12:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15175 states. [2022-11-03 04:12:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15175 to 15132. [2022-11-03 04:12:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15132 states, 9072 states have (on average 1.326168430335097) internal successors, (12031), 9601 states have internal predecessors, (12031), 4790 states have call successors, (4790), 1048 states have call predecessors, (4790), 1269 states have return successors, (7079), 4844 states have call predecessors, (7079), 4789 states have call successors, (7079) [2022-11-03 04:12:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15132 states to 15132 states and 23900 transitions. [2022-11-03 04:12:01,749 INFO L78 Accepts]: Start accepts. Automaton has 15132 states and 23900 transitions. Word has length 225 [2022-11-03 04:12:01,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:01,750 INFO L495 AbstractCegarLoop]: Abstraction has 15132 states and 23900 transitions. [2022-11-03 04:12:01,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-03 04:12:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15132 states and 23900 transitions. [2022-11-03 04:12:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 04:12:01,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:01,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:01,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:12:01,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 566554482, now seen corresponding path program 1 times [2022-11-03 04:12:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49159265] [2022-11-03 04:12:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:12:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 04:12:04,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:12:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49159265] [2022-11-03 04:12:04,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49159265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886633861] [2022-11-03 04:12:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:04,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:12:04,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:12:04,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:12:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 7830 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-03 04:12:06,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:07,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:12:07,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 04:12:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 04:12:07,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:07,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:12:08,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 04:12:08,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 04:12:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-03 04:12:08,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886633861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:08,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588657328] [2022-11-03 04:12:08,783 INFO L159 IcfgInterpreter]: Started Sifa with 147 locations of interest [2022-11-03 04:12:08,783 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:12:08,788 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:12:08,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:12:08,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 11] total 34 [2022-11-03 04:12:08,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111195726] [2022-11-03 04:12:08,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 04:12:08,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:12:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 04:12:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 04:12:08,799 INFO L87 Difference]: Start difference. First operand 15132 states and 23900 transitions. Second operand has 34 states, 25 states have (on average 7.2) internal successors, (180), 30 states have internal predecessors, (180), 17 states have call successors, (52), 7 states have call predecessors, (52), 12 states have return successors, (48), 13 states have call predecessors, (48), 15 states have call successors, (48) [2022-11-03 04:12:36,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:38,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:39,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:41,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:43,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:45,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:47,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:51,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:53,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:55,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:58,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:07,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:09,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:11,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:16,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:20,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:23,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:46,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:48,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:50,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:52,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:54,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:56,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:58,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:00,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:02,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:04,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:06,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:09,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:16,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:23,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:27,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:29,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:43,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:45,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:47,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:49,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:51,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:53,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:58,745 INFO L93 Difference]: Finished difference Result 39336 states and 67821 transitions. [2022-11-03 04:14:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-03 04:14:58,746 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 25 states have (on average 7.2) internal successors, (180), 30 states have internal predecessors, (180), 17 states have call successors, (52), 7 states have call predecessors, (52), 12 states have return successors, (48), 13 states have call predecessors, (48), 15 states have call successors, (48) Word has length 198 [2022-11-03 04:14:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:59,013 INFO L225 Difference]: With dead ends: 39336 [2022-11-03 04:14:59,013 INFO L226 Difference]: Without dead ends: 24213 [2022-11-03 04:14:59,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=601, Invalid=6041, Unknown=0, NotChecked=0, Total=6642 [2022-11-03 04:14:59,110 INFO L413 NwaCegarLoop]: 3358 mSDtfsCounter, 2450 mSDsluCounter, 52251 mSDsCounter, 0 mSdLazyCounter, 35348 mSolverCounterSat, 2682 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 52389 SdHoareTripleChecker+Invalid, 40752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2682 IncrementalHoareTripleChecker+Valid, 35348 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 2690 IncrementalHoareTripleChecker+Unchecked, 166.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:59,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2772 Valid, 52389 Invalid, 40752 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2682 Valid, 35348 Invalid, 32 Unknown, 2690 Unchecked, 166.2s Time] [2022-11-03 04:14:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24213 states. [2022-11-03 04:15:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24213 to 19673. [2022-11-03 04:15:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19673 states, 11833 states have (on average 1.3126003549395757) internal successors, (15532), 12326 states have internal predecessors, (15532), 6316 states have call successors, (6316), 1136 states have call predecessors, (6316), 1523 states have return successors, (11958), 6619 states have call predecessors, (11958), 6315 states have call successors, (11958) [2022-11-03 04:15:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19673 states to 19673 states and 33806 transitions. [2022-11-03 04:15:01,320 INFO L78 Accepts]: Start accepts. Automaton has 19673 states and 33806 transitions. Word has length 198 [2022-11-03 04:15:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:01,320 INFO L495 AbstractCegarLoop]: Abstraction has 19673 states and 33806 transitions. [2022-11-03 04:15:01,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 25 states have (on average 7.2) internal successors, (180), 30 states have internal predecessors, (180), 17 states have call successors, (52), 7 states have call predecessors, (52), 12 states have return successors, (48), 13 states have call predecessors, (48), 15 states have call successors, (48) [2022-11-03 04:15:01,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19673 states and 33806 transitions. [2022-11-03 04:15:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-03 04:15:01,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:01,375 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:15:01,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:01,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:01,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 140338295, now seen corresponding path program 1 times [2022-11-03 04:15:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:01,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964625630] [2022-11-03 04:15:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-03 04:15:04,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:04,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964625630] [2022-11-03 04:15:04,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964625630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:04,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:04,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:15:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869150169] [2022-11-03 04:15:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:04,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:15:04,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:15:04,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:15:04,319 INFO L87 Difference]: Start difference. First operand 19673 states and 33806 transitions. Second operand has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 04:15:10,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:13,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:16,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:20,363 INFO L93 Difference]: Finished difference Result 39378 states and 67665 transitions. [2022-11-03 04:15:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:15:20,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 215 [2022-11-03 04:15:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:20,491 INFO L225 Difference]: With dead ends: 39378 [2022-11-03 04:15:20,491 INFO L226 Difference]: Without dead ends: 19713 [2022-11-03 04:15:20,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:15:20,579 INFO L413 NwaCegarLoop]: 2706 mSDtfsCounter, 4 mSDsluCounter, 5890 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8110 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:20,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8110 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2022-11-03 04:15:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-11-03 04:15:22,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 19713. [2022-11-03 04:15:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19713 states, 11861 states have (on average 1.3135486046707698) internal successors, (15580), 12358 states have internal predecessors, (15580), 6316 states have call successors, (6316), 1144 states have call predecessors, (6316), 1535 states have return successors, (11966), 6619 states have call predecessors, (11966), 6315 states have call successors, (11966) [2022-11-03 04:15:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19713 states to 19713 states and 33862 transitions. [2022-11-03 04:15:22,892 INFO L78 Accepts]: Start accepts. Automaton has 19713 states and 33862 transitions. Word has length 215 [2022-11-03 04:15:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:22,892 INFO L495 AbstractCegarLoop]: Abstraction has 19713 states and 33862 transitions. [2022-11-03 04:15:22,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 04:15:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19713 states and 33862 transitions. [2022-11-03 04:15:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-03 04:15:23,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:23,024 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:15:23,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:15:23,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1100282365, now seen corresponding path program 1 times [2022-11-03 04:15:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:23,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394145261] [2022-11-03 04:15:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 04:15:25,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:25,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394145261] [2022-11-03 04:15:25,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394145261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:25,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:25,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:15:25,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351611115] [2022-11-03 04:15:25,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:15:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:15:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:15:25,041 INFO L87 Difference]: Start difference. First operand 19713 states and 33862 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 04:15:27,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:31,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:34,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:38,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:15:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:43,448 INFO L93 Difference]: Finished difference Result 49650 states and 85573 transitions. [2022-11-03 04:15:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:15:43,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 297 [2022-11-03 04:15:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:43,666 INFO L225 Difference]: With dead ends: 49650 [2022-11-03 04:15:43,666 INFO L226 Difference]: Without dead ends: 29946 [2022-11-03 04:15:43,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:15:43,787 INFO L413 NwaCegarLoop]: 3407 mSDtfsCounter, 2913 mSDsluCounter, 10276 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 12942 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:43,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2918 Valid, 12942 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1019 Invalid, 4 Unknown, 0 Unchecked, 16.9s Time] [2022-11-03 04:15:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29946 states. [2022-11-03 04:15:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29946 to 29306. [2022-11-03 04:15:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29306 states, 17618 states have (on average 1.3142240889998864) internal successors, (23154), 18379 states have internal predecessors, (23154), 9412 states have call successors, (9412), 1723 states have call predecessors, (9412), 2275 states have return successors, (17671), 9811 states have call predecessors, (17671), 9411 states have call successors, (17671) [2022-11-03 04:15:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29306 states to 29306 states and 50237 transitions. [2022-11-03 04:15:46,471 INFO L78 Accepts]: Start accepts. Automaton has 29306 states and 50237 transitions. Word has length 297 [2022-11-03 04:15:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:46,472 INFO L495 AbstractCegarLoop]: Abstraction has 29306 states and 50237 transitions. [2022-11-03 04:15:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-03 04:15:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29306 states and 50237 transitions. [2022-11-03 04:15:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-03 04:15:46,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:46,518 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:15:46,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:15:46,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash 810230247, now seen corresponding path program 1 times [2022-11-03 04:15:46,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:46,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433882957] [2022-11-03 04:15:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-03 04:15:49,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433882957] [2022-11-03 04:15:49,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433882957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:15:49,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127167651] [2022-11-03 04:15:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:49,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:49,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:49,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:49,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:15:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:51,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 8013 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 04:15:51,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:51,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:51,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:52,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:52,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:52,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:52,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 04:15:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 04:15:52,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:54,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:54,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:15:54,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 04:15:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 04:15:54,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127167651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:54,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175470427] [2022-11-03 04:15:54,837 INFO L159 IcfgInterpreter]: Started Sifa with 150 locations of interest [2022-11-03 04:15:54,837 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:15:54,838 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:15:54,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:15:54,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 14] total 25 [2022-11-03 04:15:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952444056] [2022-11-03 04:15:54,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:15:54,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 04:15:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 04:15:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-11-03 04:15:54,843 INFO L87 Difference]: Start difference. First operand 29306 states and 50237 transitions. Second operand has 25 states, 18 states have (on average 10.666666666666666) internal successors, (192), 22 states have internal predecessors, (192), 11 states have call successors, (54), 6 states have call predecessors, (54), 9 states have return successors, (50), 8 states have call predecessors, (50), 11 states have call successors, (50) [2022-11-03 04:16:00,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:02,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:08,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:16,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:29,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:31,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:33,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:35,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:39,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:41,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:48,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:16:50,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:11,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:13,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:15,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:17,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:18,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:27,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:31,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:33,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:35,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:37,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:39,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:41,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:51,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:53,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:55,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:17:57,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:18:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:06,696 INFO L93 Difference]: Finished difference Result 61659 states and 115639 transitions. [2022-11-03 04:18:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 04:18:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 18 states have (on average 10.666666666666666) internal successors, (192), 22 states have internal predecessors, (192), 11 states have call successors, (54), 6 states have call predecessors, (54), 9 states have return successors, (50), 8 states have call predecessors, (50), 11 states have call successors, (50) Word has length 216 [2022-11-03 04:18:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:06,851 INFO L225 Difference]: With dead ends: 61659 [2022-11-03 04:18:06,851 INFO L226 Difference]: Without dead ends: 32361 [2022-11-03 04:18:06,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 04:18:06,981 INFO L413 NwaCegarLoop]: 2639 mSDtfsCounter, 2632 mSDsluCounter, 16479 mSDsCounter, 0 mSdLazyCounter, 20231 mSolverCounterSat, 3684 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 17850 SdHoareTripleChecker+Invalid, 23936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3684 IncrementalHoareTripleChecker+Valid, 20231 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:06,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2775 Valid, 17850 Invalid, 23936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3684 Valid, 20231 Invalid, 21 Unknown, 0 Unchecked, 129.2s Time] [2022-11-03 04:18:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32361 states. [2022-11-03 04:18:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32361 to 30066. [2022-11-03 04:18:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30066 states, 18098 states have (on average 1.3156149850812244) internal successors, (23810), 18947 states have internal predecessors, (23810), 9616 states have call successors, (9616), 1723 states have call predecessors, (9616), 2351 states have return successors, (18940), 10003 states have call predecessors, (18940), 9615 states have call successors, (18940) [2022-11-03 04:18:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30066 states to 30066 states and 52366 transitions. [2022-11-03 04:18:09,133 INFO L78 Accepts]: Start accepts. Automaton has 30066 states and 52366 transitions. Word has length 216 [2022-11-03 04:18:09,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:09,133 INFO L495 AbstractCegarLoop]: Abstraction has 30066 states and 52366 transitions. [2022-11-03 04:18:09,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 18 states have (on average 10.666666666666666) internal successors, (192), 22 states have internal predecessors, (192), 11 states have call successors, (54), 6 states have call predecessors, (54), 9 states have return successors, (50), 8 states have call predecessors, (50), 11 states have call successors, (50) [2022-11-03 04:18:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 30066 states and 52366 transitions. [2022-11-03 04:18:09,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-03 04:18:09,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:09,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:18:09,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:18:09,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:09,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:09,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -366551711, now seen corresponding path program 1 times [2022-11-03 04:18:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:18:09,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84728897] [2022-11-03 04:18:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:09,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:18:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-03 04:18:12,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:18:12,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84728897] [2022-11-03 04:18:12,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84728897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:18:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494763490] [2022-11-03 04:18:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:12,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:12,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:18:12,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:18:12,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:18:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:14,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 8558 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-03 04:18:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:15,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:15,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:15,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:15,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:15,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:15,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 04:18:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-03 04:18:15,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:17,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:18,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:18:18,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 04:18:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 04:18:19,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494763490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:19,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068017311] [2022-11-03 04:18:19,064 INFO L159 IcfgInterpreter]: Started Sifa with 167 locations of interest [2022-11-03 04:18:19,064 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:18:19,065 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:18:19,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:18:19,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 14] total 26 [2022-11-03 04:18:19,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255174333] [2022-11-03 04:18:19,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:18:19,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 04:18:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:18:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 04:18:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:18:19,069 INFO L87 Difference]: Start difference. First operand 30066 states and 52366 transitions. Second operand has 26 states, 19 states have (on average 10.789473684210526) internal successors, (205), 23 states have internal predecessors, (205), 11 states have call successors, (57), 6 states have call predecessors, (57), 9 states have return successors, (53), 8 states have call predecessors, (53), 11 states have call successors, (53) [2022-11-03 04:18:25,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:18:26,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:18:29,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:18:40,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:18:55,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:18:59,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:04,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:05,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:07,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:08,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:17,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:18,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:20,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:22,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:24,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:26,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:28,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:30,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:33,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:35,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:37,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:39,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:41,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:42,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:44,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:46,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:19:59,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:02,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:04,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:06,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:08,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:11,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:13,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:15,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:17,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:19,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:22,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:20:24,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:04,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:05,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:07,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:09,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:11,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:13,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:15,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:17,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:19,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:21,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:37,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:42,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:45,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:47,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:49,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:51,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:53,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:55,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:21:57,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:12,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:13,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:15,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:17,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:19,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:21,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:23,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:25,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:27,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:22:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:22:41,969 INFO L93 Difference]: Finished difference Result 63151 states and 120267 transitions. [2022-11-03 04:22:41,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 04:22:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 10.789473684210526) internal successors, (205), 23 states have internal predecessors, (205), 11 states have call successors, (57), 6 states have call predecessors, (57), 9 states have return successors, (53), 8 states have call predecessors, (53), 11 states have call successors, (53) Word has length 243 [2022-11-03 04:22:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:22:42,179 INFO L225 Difference]: With dead ends: 63151 [2022-11-03 04:22:42,179 INFO L226 Difference]: Without dead ends: 33093 [2022-11-03 04:22:42,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 04:22:42,495 INFO L413 NwaCegarLoop]: 2664 mSDtfsCounter, 1324 mSDsluCounter, 27914 mSDsCounter, 0 mSdLazyCounter, 26854 mSolverCounterSat, 1797 mSolverCounterUnsat, 49 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 28463 SdHoareTripleChecker+Invalid, 28700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1797 IncrementalHoareTripleChecker+Valid, 26854 IncrementalHoareTripleChecker+Invalid, 49 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:22:42,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 28463 Invalid, 28700 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1797 Valid, 26854 Invalid, 49 Unknown, 0 Unchecked, 259.6s Time] [2022-11-03 04:22:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33093 states. [2022-11-03 04:22:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33093 to 30102. [2022-11-03 04:22:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30102 states, 18122 states have (on average 1.3158591766913144) internal successors, (23846), 18983 states have internal predecessors, (23846), 9616 states have call successors, (9616), 1723 states have call predecessors, (9616), 2363 states have return successors, (18976), 10003 states have call predecessors, (18976), 9615 states have call successors, (18976) [2022-11-03 04:22:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30102 states to 30102 states and 52438 transitions. [2022-11-03 04:22:44,744 INFO L78 Accepts]: Start accepts. Automaton has 30102 states and 52438 transitions. Word has length 243 [2022-11-03 04:22:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:22:44,744 INFO L495 AbstractCegarLoop]: Abstraction has 30102 states and 52438 transitions. [2022-11-03 04:22:44,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 10.789473684210526) internal successors, (205), 23 states have internal predecessors, (205), 11 states have call successors, (57), 6 states have call predecessors, (57), 9 states have return successors, (53), 8 states have call predecessors, (53), 11 states have call successors, (53) [2022-11-03 04:22:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 30102 states and 52438 transitions. [2022-11-03 04:22:44,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-03 04:22:44,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:22:44,775 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:22:44,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:22:44,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:22:44,992 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:22:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:22:44,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2098850995, now seen corresponding path program 1 times [2022-11-03 04:22:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:22:44,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573684313] [2022-11-03 04:22:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:22:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-03 04:22:47,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:22:47,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573684313] [2022-11-03 04:22:47,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573684313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:22:47,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828829712] [2022-11-03 04:22:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:22:47,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:22:47,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:22:47,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:22:47,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82660dbe-ed62-4055-bcb6-8678d40932a1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:22:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:22:49,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 8086 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 04:22:49,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:22:50,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:50,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:50,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:50,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:50,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:51,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 04:22:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 44 proven. 17 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:22:51,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:22:54,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:54,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-03 04:22:56,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-03 04:22:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 04:22:56,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828829712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:22:56,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1092990930] [2022-11-03 04:22:56,381 INFO L159 IcfgInterpreter]: Started Sifa with 156 locations of interest [2022-11-03 04:22:56,381 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:22:56,382 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:22:56,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:22:56,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 14] total 27 [2022-11-03 04:22:56,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342480208] [2022-11-03 04:22:56,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:22:56,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 04:22:56,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:22:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 04:22:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-11-03 04:22:56,388 INFO L87 Difference]: Start difference. First operand 30102 states and 52438 transitions. Second operand has 27 states, 20 states have (on average 10.05) internal successors, (201), 24 states have internal predecessors, (201), 13 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (53), 10 states have call predecessors, (53), 13 states have call successors, (53) [2022-11-03 04:23:05,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:23:08,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:23:15,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []