./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/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_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/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_b272369f-3e26-41e4-bd36-3bf371e58bf8/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 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 --- 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 01:42:47,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:42:47,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:42:47,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:42:47,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:42:47,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:42:47,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:42:47,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:42:47,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:42:47,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:42:47,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:42:47,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:42:47,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:42:47,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:42:47,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:42:47,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:42:47,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:42:47,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:42:47,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:42:47,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:42:47,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:42:47,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:42:47,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:42:47,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:42:47,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:42:47,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:42:47,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:42:47,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:42:47,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:42:47,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:42:47,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:42:47,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:42:47,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:42:47,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:42:47,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:42:47,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:42:47,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:42:47,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:42:47,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:42:47,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:42:47,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:42:47,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:42:47,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:42:47,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:42:47,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:42:47,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:42:47,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:42:47,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:42:47,489 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:42:47,490 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:42:47,490 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:42:47,490 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:42:47,491 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:42:47,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:42:47,492 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:42:47,492 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:42:47,492 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:42:47,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:42:47,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:42:47,493 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:42:47,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:42:47,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:42:47,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:42:47,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:42:47,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:42:47,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:42:47,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:42:47,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:42:47,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:42:47,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:42:47,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:42:47,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:47,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:42:47,498 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:42:47,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:42:47,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:42:47,499 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:42:47,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:42:47,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:42:47,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:42:47,500 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_b272369f-3e26-41e4-bd36-3bf371e58bf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 [2022-11-03 01:42:47,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:42:47,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:42:47,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:42:47,919 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:42:47,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:42:47,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2022-11-03 01:42:48,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/data/42086fe4b/6615417d932447659de67beec648f980/FLAG7754a4fc4 [2022-11-03 01:42:49,001 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:42:49,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2022-11-03 01:42:49,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/data/42086fe4b/6615417d932447659de67beec648f980/FLAG7754a4fc4 [2022-11-03 01:42:49,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/data/42086fe4b/6615417d932447659de67beec648f980 [2022-11-03 01:42:49,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:42:49,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:42:49,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:49,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:42:49,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:42:49,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:49" (1/1) ... [2022-11-03 01:42:49,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275d905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:49, skipping insertion in model container [2022-11-03 01:42:49,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:49" (1/1) ... [2022-11-03 01:42:49,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:42:49,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:42:50,635 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_b272369f-3e26-41e4-bd36-3bf371e58bf8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2022-11-03 01:42:51,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:51,964 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:42:52,127 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_b272369f-3e26-41e4-bd36-3bf371e58bf8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2022-11-03 01:42:52,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:52,724 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:42:52,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52 WrapperNode [2022-11-03 01:42:52,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:52,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:52,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:42:52,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:42:52,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:52,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:54,441 INFO L138 Inliner]: procedures = 212, calls = 2651, calls flagged for inlining = 91, calls inlined = 91, statements flattened = 5842 [2022-11-03 01:42:54,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:54,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:42:54,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:42:54,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:42:54,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:54,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:54,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:54,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:56,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:56,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:56,345 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:56,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:56,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:42:56,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:42:56,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:42:56,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:42:56,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (1/1) ... [2022-11-03 01:42:56,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:56,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:56,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:42:56,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:42:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2022-11-03 01:42:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2022-11-03 01:42:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 01:42:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 01:42:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:42:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:42:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:42:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:42:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-03 01:42:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-03 01:42:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2022-11-03 01:42:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2022-11-03 01:42:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2022-11-03 01:42:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2022-11-03 01:42:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:42:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:42:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-11-03 01:42:56,694 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-11-03 01:42:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~int [2022-11-03 01:42:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~int [2022-11-03 01:42:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ioctl [2022-11-03 01:42:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ioctl [2022-11-03 01:42:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2022-11-03 01:42:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2022-11-03 01:42:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2022-11-03 01:42:56,695 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2022-11-03 01:42:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:42:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:42:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:42:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:42:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_tx_fixup [2022-11-03 01:42:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_tx_fixup [2022-11-03 01:42:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:42:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:42:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:42:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:42:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2022-11-03 01:42:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2022-11-03 01:42:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_change_mtu [2022-11-03 01:42:56,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_change_mtu [2022-11-03 01:42:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2022-11-03 01:42:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2022-11-03 01:42:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:42:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:42:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:42:56,698 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-11-03 01:42:56,698 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-11-03 01:42:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 01:42:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 01:42:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-03 01:42:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-03 01:42:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:42:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-11-03 01:42:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 01:42:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 01:42:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 01:42:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:42:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:42:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2022-11-03 01:42:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2022-11-03 01:42:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2022-11-03 01:42:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2022-11-03 01:42:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2022-11-03 01:42:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2022-11-03 01:42:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:42:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2022-11-03 01:42:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2022-11-03 01:42:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:42:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2022-11-03 01:42:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2022-11-03 01:42:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2022-11-03 01:42:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2022-11-03 01:42:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2022-11-03 01:42:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2022-11-03 01:42:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:42:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:42:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 01:42:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 01:42:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:42:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:42:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 01:42:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 01:42:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2022-11-03 01:42:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2022-11-03 01:42:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:42:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 01:42:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 01:42:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-03 01:42:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-03 01:42:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2022-11-03 01:42:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2022-11-03 01:42:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:42:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-03 01:42:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-03 01:42:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2022-11-03 01:42:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2022-11-03 01:42:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:42:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-03 01:42:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-03 01:42:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-03 01:42:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-03 01:42:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2022-11-03 01:42:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2022-11-03 01:42:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:42:56,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:42:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2022-11-03 01:42:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2022-11-03 01:42:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-11-03 01:42:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-03 01:42:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-03 01:42:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-11-03 01:42:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:42:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:42:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2022-11-03 01:42:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2022-11-03 01:42:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2022-11-03 01:42:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2022-11-03 01:42:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:42:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-03 01:42:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-03 01:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:42:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-11-03 01:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:42:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2022-11-03 01:42:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2022-11-03 01:42:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:42:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_status [2022-11-03 01:42:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_status [2022-11-03 01:42:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:42:56,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:42:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:42:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2022-11-03 01:42:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2022-11-03 01:42:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2022-11-03 01:42:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2022-11-03 01:42:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2022-11-03 01:42:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2022-11-03 01:42:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2022-11-03 01:42:56,711 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2022-11-03 01:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2022-11-03 01:42:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2022-11-03 01:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_manage_power [2022-11-03 01:42:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_manage_power [2022-11-03 01:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_fixup [2022-11-03 01:42:56,712 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_fixup [2022-11-03 01:42:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2022-11-03 01:42:56,713 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2022-11-03 01:42:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:42:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:42:56,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:42:57,537 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:42:57,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:42:58,018 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:45:25,881 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:46:29,052 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:46:29,053 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:46:29,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:46:29 BoogieIcfgContainer [2022-11-03 01:46:29,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:46:29,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:46:29,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:46:29,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:46:29,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:42:49" (1/3) ... [2022-11-03 01:46:29,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8cd9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:46:29, skipping insertion in model container [2022-11-03 01:46:29,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:52" (2/3) ... [2022-11-03 01:46:29,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8cd9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:46:29, skipping insertion in model container [2022-11-03 01:46:29,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:46:29" (3/3) ... [2022-11-03 01:46:29,077 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2022-11-03 01:46:29,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:46:29,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:46:29,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:46:29,272 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;@55645977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:46:29,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:46:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 773 states have (on average 1.407503234152652) internal successors, (1088), 789 states have internal predecessors, (1088), 331 states have call successors, (331), 65 states have call predecessors, (331), 64 states have return successors, (325), 325 states have call predecessors, (325), 325 states have call successors, (325) [2022-11-03 01:46:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 01:46:29,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:29,307 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-03 01:46:29,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:29,318 INFO L85 PathProgramCache]: Analyzing trace with hash 578568540, now seen corresponding path program 1 times [2022-11-03 01:46:29,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:29,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555428955] [2022-11-03 01:46:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-03 01:46:30,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:30,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555428955] [2022-11-03 01:46:30,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555428955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:30,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:30,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218462951] [2022-11-03 01:46:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:30,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:30,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:30,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:30,590 INFO L87 Difference]: Start difference. First operand has 1170 states, 773 states have (on average 1.407503234152652) internal successors, (1088), 789 states have internal predecessors, (1088), 331 states have call successors, (331), 65 states have call predecessors, (331), 64 states have return successors, (325), 325 states have call predecessors, (325), 325 states have call successors, (325) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 01:46:32,682 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 01:46:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:35,415 INFO L93 Difference]: Finished difference Result 3422 states and 5105 transitions. [2022-11-03 01:46:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:35,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2022-11-03 01:46:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:35,458 INFO L225 Difference]: With dead ends: 3422 [2022-11-03 01:46:35,458 INFO L226 Difference]: Without dead ends: 2247 [2022-11-03 01:46:35,476 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 01:46:35,480 INFO L413 NwaCegarLoop]: 1874 mSDtfsCounter, 1645 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:35,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 3436 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 01:46:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2022-11-03 01:46:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2244. [2022-11-03 01:46:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1495 states have (on average 1.394648829431438) internal successors, (2085), 1506 states have internal predecessors, (2085), 622 states have call successors, (622), 127 states have call predecessors, (622), 126 states have return successors, (616), 616 states have call predecessors, (616), 616 states have call successors, (616) [2022-11-03 01:46:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3323 transitions. [2022-11-03 01:46:35,740 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3323 transitions. Word has length 87 [2022-11-03 01:46:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:35,741 INFO L495 AbstractCegarLoop]: Abstraction has 2244 states and 3323 transitions. [2022-11-03 01:46:35,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 01:46:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3323 transitions. [2022-11-03 01:46:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 01:46:35,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:35,748 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-11-03 01:46:35,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:46:35,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash -461433454, now seen corresponding path program 1 times [2022-11-03 01:46:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104798193] [2022-11-03 01:46:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-03 01:46:36,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:36,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104798193] [2022-11-03 01:46:36,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104798193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:36,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:36,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938290932] [2022-11-03 01:46:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:36,112 INFO L87 Difference]: Start difference. First operand 2244 states and 3323 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 01:46:38,172 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 01:46:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:40,642 INFO L93 Difference]: Finished difference Result 5794 states and 8547 transitions. [2022-11-03 01:46:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:40,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2022-11-03 01:46:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:40,682 INFO L225 Difference]: With dead ends: 5794 [2022-11-03 01:46:40,682 INFO L226 Difference]: Without dead ends: 3577 [2022-11-03 01:46:40,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:40,698 INFO L413 NwaCegarLoop]: 1722 mSDtfsCounter, 979 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:40,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 3221 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 01:46:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2022-11-03 01:46:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3564. [2022-11-03 01:46:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 2380 states have (on average 1.3966386554621848) internal successors, (3324), 2393 states have internal predecessors, (3324), 964 states have call successors, (964), 220 states have call predecessors, (964), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:46:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 5246 transitions. [2022-11-03 01:46:40,923 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 5246 transitions. Word has length 95 [2022-11-03 01:46:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:40,926 INFO L495 AbstractCegarLoop]: Abstraction has 3564 states and 5246 transitions. [2022-11-03 01:46:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-03 01:46:40,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 5246 transitions. [2022-11-03 01:46:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 01:46:40,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:40,936 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-11-03 01:46:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:46:40,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash -701978379, now seen corresponding path program 1 times [2022-11-03 01:46:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:40,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005835643] [2022-11-03 01:46:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-03 01:46:42,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:42,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005835643] [2022-11-03 01:46:42,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005835643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:42,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:42,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582248595] [2022-11-03 01:46:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:42,096 INFO L87 Difference]: Start difference. First operand 3564 states and 5246 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:44,355 INFO L93 Difference]: Finished difference Result 3566 states and 5247 transitions. [2022-11-03 01:46:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2022-11-03 01:46:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:44,384 INFO L225 Difference]: With dead ends: 3566 [2022-11-03 01:46:44,385 INFO L226 Difference]: Without dead ends: 3563 [2022-11-03 01:46:44,388 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 01:46:44,394 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1664 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:44,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 1539 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 01:46:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-11-03 01:46:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3563. [2022-11-03 01:46:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 2380 states have (on average 1.396218487394958) internal successors, (3323), 2392 states have internal predecessors, (3323), 963 states have call successors, (963), 220 states have call predecessors, (963), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:46:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 5244 transitions. [2022-11-03 01:46:44,648 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 5244 transitions. Word has length 96 [2022-11-03 01:46:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:44,649 INFO L495 AbstractCegarLoop]: Abstraction has 3563 states and 5244 transitions. [2022-11-03 01:46:44,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 5244 transitions. [2022-11-03 01:46:44,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 01:46:44,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:44,652 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-11-03 01:46:44,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:46:44,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -287133259, now seen corresponding path program 1 times [2022-11-03 01:46:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:44,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188015364] [2022-11-03 01:46:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-03 01:46:45,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:45,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188015364] [2022-11-03 01:46:45,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188015364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:45,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:45,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281260075] [2022-11-03 01:46:45,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:45,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:45,626 INFO L87 Difference]: Start difference. First operand 3563 states and 5244 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:46,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:48,427 INFO L93 Difference]: Finished difference Result 3565 states and 5245 transitions. [2022-11-03 01:46:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:48,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2022-11-03 01:46:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:48,451 INFO L225 Difference]: With dead ends: 3565 [2022-11-03 01:46:48,452 INFO L226 Difference]: Without dead ends: 3562 [2022-11-03 01:46:48,455 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 01:46:48,457 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 1661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:48,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 1537 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:46:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2022-11-03 01:46:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2022-11-03 01:46:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 2380 states have (on average 1.395798319327731) internal successors, (3322), 2391 states have internal predecessors, (3322), 962 states have call successors, (962), 220 states have call predecessors, (962), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:46:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 5242 transitions. [2022-11-03 01:46:48,718 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 5242 transitions. Word has length 97 [2022-11-03 01:46:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:48,719 INFO L495 AbstractCegarLoop]: Abstraction has 3562 states and 5242 transitions. [2022-11-03 01:46:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 5242 transitions. [2022-11-03 01:46:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-03 01:46:48,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:48,723 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-11-03 01:46:48,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:46:48,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash -311831560, now seen corresponding path program 1 times [2022-11-03 01:46:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:48,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759788358] [2022-11-03 01:46:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-03 01:46:49,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:49,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759788358] [2022-11-03 01:46:49,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759788358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:49,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:49,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:49,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061873368] [2022-11-03 01:46:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:49,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:49,074 INFO L87 Difference]: Start difference. First operand 3562 states and 5242 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:51,125 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 01:46:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:52,460 INFO L93 Difference]: Finished difference Result 3564 states and 5243 transitions. [2022-11-03 01:46:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:52,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2022-11-03 01:46:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:52,485 INFO L225 Difference]: With dead ends: 3564 [2022-11-03 01:46:52,486 INFO L226 Difference]: Without dead ends: 3561 [2022-11-03 01:46:52,489 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 01:46:52,490 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1658 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:52,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 1535 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 01:46:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2022-11-03 01:46:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3561. [2022-11-03 01:46:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2380 states have (on average 1.3953781512605041) internal successors, (3321), 2390 states have internal predecessors, (3321), 961 states have call successors, (961), 220 states have call predecessors, (961), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:46:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5240 transitions. [2022-11-03 01:46:52,767 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5240 transitions. Word has length 98 [2022-11-03 01:46:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:52,769 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5240 transitions. [2022-11-03 01:46:52,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5240 transitions. [2022-11-03 01:46:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 01:46:52,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:52,773 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-11-03 01:46:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:46:52,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1077474024, now seen corresponding path program 1 times [2022-11-03 01:46:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:52,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122619795] [2022-11-03 01:46:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-03 01:46:53,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:53,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122619795] [2022-11-03 01:46:53,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122619795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:53,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:53,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:53,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146340941] [2022-11-03 01:46:53,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:53,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:53,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:53,098 INFO L87 Difference]: Start difference. First operand 3561 states and 5240 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:55,149 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 01:46:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:56,766 INFO L93 Difference]: Finished difference Result 7092 states and 10441 transitions. [2022-11-03 01:46:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:56,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 99 [2022-11-03 01:46:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:56,791 INFO L225 Difference]: With dead ends: 7092 [2022-11-03 01:46:56,791 INFO L226 Difference]: Without dead ends: 3558 [2022-11-03 01:46:56,807 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 01:46:56,808 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 1653 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:56,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1531 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 01:46:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2022-11-03 01:46:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3557. [2022-11-03 01:46:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 2377 states have (on average 1.3946150610012622) internal successors, (3315), 2386 states have internal predecessors, (3315), 960 states have call successors, (960), 220 states have call predecessors, (960), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:46:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5233 transitions. [2022-11-03 01:46:57,084 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5233 transitions. Word has length 99 [2022-11-03 01:46:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:57,085 INFO L495 AbstractCegarLoop]: Abstraction has 3557 states and 5233 transitions. [2022-11-03 01:46:57,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5233 transitions. [2022-11-03 01:46:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 01:46:57,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:57,088 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-11-03 01:46:57,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:46:57,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 957418235, now seen corresponding path program 1 times [2022-11-03 01:46:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:57,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841196215] [2022-11-03 01:46:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:57,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-03 01:46:57,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:57,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841196215] [2022-11-03 01:46:57,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841196215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:57,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:57,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232752236] [2022-11-03 01:46:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:57,399 INFO L87 Difference]: Start difference. First operand 3557 states and 5233 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:59,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:59,513 INFO L93 Difference]: Finished difference Result 3559 states and 5234 transitions. [2022-11-03 01:46:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:59,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 100 [2022-11-03 01:46:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:59,537 INFO L225 Difference]: With dead ends: 3559 [2022-11-03 01:46:59,537 INFO L226 Difference]: Without dead ends: 3550 [2022-11-03 01:46:59,540 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 01:46:59,544 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 1650 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:59,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 1531 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 01:46:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2022-11-03 01:46:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3550. [2022-11-03 01:46:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2371 states have (on average 1.3935048502741458) internal successors, (3304), 2379 states have internal predecessors, (3304), 959 states have call successors, (959), 220 states have call predecessors, (959), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:46:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 5221 transitions. [2022-11-03 01:46:59,841 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 5221 transitions. Word has length 100 [2022-11-03 01:46:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:59,841 INFO L495 AbstractCegarLoop]: Abstraction has 3550 states and 5221 transitions. [2022-11-03 01:46:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 01:46:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 5221 transitions. [2022-11-03 01:46:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 01:46:59,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:59,851 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 3, 3, 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] [2022-11-03 01:46:59,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:46:59,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1384347853, now seen corresponding path program 1 times [2022-11-03 01:46:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729040514] [2022-11-03 01:46:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-11-03 01:47:00,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:00,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729040514] [2022-11-03 01:47:00,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729040514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:00,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431895456] [2022-11-03 01:47:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:00,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:00,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:47:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:03,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 3153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:47:03,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-03 01:47:03,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:03,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431895456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:03,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:47:03,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-03 01:47:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655937613] [2022-11-03 01:47:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:47:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:47:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:03,853 INFO L87 Difference]: Start difference. First operand 3550 states and 5221 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:47:05,911 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 01:47:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:08,513 INFO L93 Difference]: Finished difference Result 7086 states and 10432 transitions. [2022-11-03 01:47:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:47:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 159 [2022-11-03 01:47:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:08,533 INFO L225 Difference]: With dead ends: 7086 [2022-11-03 01:47:08,534 INFO L226 Difference]: Without dead ends: 3554 [2022-11-03 01:47:08,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:47:08,547 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 1 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:08,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4565 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 01:47:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-11-03 01:47:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3554. [2022-11-03 01:47:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2375 states have (on average 1.3928421052631579) internal successors, (3308), 2383 states have internal predecessors, (3308), 959 states have call successors, (959), 220 states have call predecessors, (959), 219 states have return successors, (958), 958 states have call predecessors, (958), 958 states have call successors, (958) [2022-11-03 01:47:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5225 transitions. [2022-11-03 01:47:08,835 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5225 transitions. Word has length 159 [2022-11-03 01:47:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:08,836 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 5225 transitions. [2022-11-03 01:47:08,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:47:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5225 transitions. [2022-11-03 01:47:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 01:47:08,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:08,843 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 3, 3, 3, 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] [2022-11-03 01:47:08,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:09,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 01:47:09,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:09,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1468611982, now seen corresponding path program 1 times [2022-11-03 01:47:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:09,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571584012] [2022-11-03 01:47:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2022-11-03 01:47:10,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571584012] [2022-11-03 01:47:10,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571584012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035424482] [2022-11-03 01:47:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:10,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:10,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:10,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b272369f-3e26-41e4-bd36-3bf371e58bf8/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:47:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:47:12,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 368 proven. 7 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-11-03 01:47:13,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:47:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2022-11-03 01:47:13,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035424482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:47:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [708595582] [2022-11-03 01:47:13,383 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-03 01:47:13,383 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:47:13,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:47:13,392 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:47:13,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:47:20,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:20,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:22,779 INFO L244 Elim1Store]: Index analysis took 3057 ms [2022-11-03 01:51:53,759 WARN L234 SmtUtils]: Spent 4.51m on a formula simplification. DAG size of input: 3750 DAG size of output: 1875 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 01:51:53,773 INFO L356 Elim1Store]: treesize reduction 9129, result has 27.8 percent of original size [2022-11-03 01:51:53,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 234 select indices, 234 select index equivalence classes, 27267 disjoint index pairs (out of 27261 index pairs), introduced 234 new quantified variables, introduced 235 case distinctions, treesize of input 1183 treesize of output 4220 [2022-11-03 01:52:05,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:10,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:10,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:19,822 INFO L244 Elim1Store]: Index analysis took 18148 ms