./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d63f3d312d028079695bf95fa29efe98b168bcd1b57f8b32c4056bb2f52ae36f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:29:41,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:29:41,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:29:41,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:29:41,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:29:41,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:29:41,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:29:41,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:29:41,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:29:41,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:29:41,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:29:41,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:29:41,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:29:41,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:29:41,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:29:41,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:29:41,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:29:41,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:29:41,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:29:41,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:29:41,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:29:41,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:29:41,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:29:41,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:29:41,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:29:41,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:29:41,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:29:41,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:29:41,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:29:41,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:29:41,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:29:41,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:29:41,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:29:41,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:29:41,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:29:41,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:29:41,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:29:41,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:29:41,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:29:41,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:29:41,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:29:41,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:29:41,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:29:41,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:29:41,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:29:41,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:29:41,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:29:41,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:29:41,738 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:29:41,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:29:41,739 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:29:41,739 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:29:41,739 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:29:41,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:29:41,740 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:29:41,740 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:29:41,741 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:29:41,741 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:29:41,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:29:41,741 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:29:41,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:29:41,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:29:41,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:29:41,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:29:41,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:29:41,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:29:41,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:29:41,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:29:41,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:29:41,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:29:41,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:29:41,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:29:41,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:29:41,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:29:41,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:29:41,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:29:41,747 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:29:41,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:29:41,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:29:41,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:29:41,748 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_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63f3d312d028079695bf95fa29efe98b168bcd1b57f8b32c4056bb2f52ae36f [2022-11-23 14:29:42,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:29:42,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:29:42,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:29:42,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:29:42,085 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:29:42,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i [2022-11-23 14:29:45,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:29:46,085 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:29:46,085 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i [2022-11-23 14:29:46,197 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/data/645cba3e2/943c6a49bedf4ebda366ff44e65f6b20/FLAG9b5c079aa [2022-11-23 14:29:46,212 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/data/645cba3e2/943c6a49bedf4ebda366ff44e65f6b20 [2022-11-23 14:29:46,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:29:46,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:29:46,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:29:46,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:29:46,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:29:46,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:46" (1/1) ... [2022-11-23 14:29:46,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64696afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:46, skipping insertion in model container [2022-11-23 14:29:46,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:46" (1/1) ... [2022-11-23 14:29:46,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:29:46,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:29:47,009 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [3810] [2022-11-23 14:29:49,716 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i[459385,459398] [2022-11-23 14:29:50,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:29:50,122 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:29:50,220 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [3810] [2022-11-23 14:29:50,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i[459385,459398] [2022-11-23 14:29:50,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:29:51,221 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:29:51,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51 WrapperNode [2022-11-23 14:29:51,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:29:51,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:29:51,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:29:51,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:29:51,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:51,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,103 INFO L138 Inliner]: procedures = 429, calls = 6505, calls flagged for inlining = 129, calls inlined = 123, statements flattened = 17029 [2022-11-23 14:29:52,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:29:52,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:29:52,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:29:52,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:29:52,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:29:52,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:29:52,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:29:52,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:29:52,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (1/1) ... [2022-11-23 14:29:52,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:29:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:52,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:29:52,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:29:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 14:29:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 14:29:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure to_sd [2022-11-23 14:29:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sd [2022-11-23 14:29:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_tuner [2022-11-23 14:29:52,905 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_tuner [2022-11-23 14:29:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:29:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:29:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:29:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:29:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx2388x [2022-11-23 14:29:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx2388x [2022-11-23 14:29:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_tuner [2022-11-23 14:29:52,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_tuner [2022-11-23 14:29:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx2583x [2022-11-23 14:29:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx2583x [2022-11-23 14:29:52,907 INFO L130 BoogieDeclarations]: Found specification of procedure to_ir_state [2022-11-23 14:29:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure to_ir_state [2022-11-23 14:29:52,907 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-23 14:29:52,907 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-23 14:29:52,907 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_width_count_to_ns [2022-11-23 14:29:52,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_width_count_to_ns [2022-11-23 14:29:52,908 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:29:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:29:52,909 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-23 14:29:52,909 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-23 14:29:52,910 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-23 14:29:52,910 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-23 14:29:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:29:52,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:29:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_sliced_fmt [2022-11-23 14:29:52,911 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_sliced_fmt [2022-11-23 14:29:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:29:52,911 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-11-23 14:29:52,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-11-23 14:29:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_resolution [2022-11-23 14:29:52,912 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_resolution [2022-11-23 14:29:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-23 14:29:52,912 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-23 14:29:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:29:52,912 INFO L130 BoogieDeclarations]: Found specification of procedure cx25836_initialize [2022-11-23 14:29:52,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25836_initialize [2022-11-23 14:29:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_write4 [2022-11-23 14:29:52,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_write4 [2022-11-23 14:29:52,913 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_s_ext_ctrls [2022-11-23 14:29:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_s_ext_ctrls [2022-11-23 14:29:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:29:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_frequency [2022-11-23 14:29:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_frequency [2022-11-23 14:29:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_std_setup [2022-11-23 14:29:52,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_std_setup [2022-11-23 14:29:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:29:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-23 14:29:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-23 14:29:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure control_tx_modulation_enable [2022-11-23 14:29:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure control_tx_modulation_enable [2022-11-23 14:29:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure cx23885_initialize [2022-11-23 14:29:52,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cx23885_initialize [2022-11-23 14:29:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_raw_fmt [2022-11-23 14:29:52,919 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_raw_fmt [2022-11-23 14:29:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_and_or [2022-11-23 14:29:52,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_and_or [2022-11-23 14:29:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_s_ctrl [2022-11-23 14:29:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_s_ctrl [2022-11-23 14:29:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure set_audclk_freq [2022-11-23 14:29:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure set_audclk_freq [2022-11-23 14:29:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_g_parameters [2022-11-23 14:29:52,921 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_g_parameters [2022-11-23 14:29:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_initialize [2022-11-23 14:29:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_initialize [2022-11-23 14:29:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:29:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:29:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_input_status [2022-11-23 14:29:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_input_status [2022-11-23 14:29:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure lpf_count_to_ns [2022-11-23 14:29:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure lpf_count_to_ns [2022-11-23 14:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_set_audclk_freq [2022-11-23 14:29:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_set_audclk_freq [2022-11-23 14:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_width_count_to_us [2022-11-23 14:29:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_width_count_to_us [2022-11-23 14:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:29:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:29:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:29:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:29:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:29:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2022-11-23 14:29:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2022-11-23 14:29:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_name [2022-11-23 14:29:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_name [2022-11-23 14:29:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_decode_vbi_line [2022-11-23 14:29:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_decode_vbi_line [2022-11-23 14:29:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure pulse_clocks_to_clock_divider [2022-11-23 14:29:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pulse_clocks_to_clock_divider [2022-11-23 14:29:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx231xx [2022-11-23 14:29:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx231xx [2022-11-23 14:29:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-23 14:29:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-23 14:29:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_probe [2022-11-23 14:29:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_probe [2022-11-23 14:29:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 14:29:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 14:29:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure odd_parity [2022-11-23 14:29:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure odd_parity [2022-11-23 14:29:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_enable [2022-11-23 14:29:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_enable [2022-11-23 14:29:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:29:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:29:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure filter_rx_s_min_width [2022-11-23 14:29:52,935 INFO L138 BoogieDeclarations]: Found implementation of procedure filter_rx_s_min_width [2022-11-23 14:29:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_shutdown [2022-11-23 14:29:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_shutdown [2022-11-23 14:29:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-23 14:29:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-23 14:29:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:29:52,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:29:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_g_ctrl [2022-11-23 14:29:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_g_ctrl [2022-11-23 14:29:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_s_parameters [2022-11-23 14:29:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_s_parameters [2022-11-23 14:29:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:29:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:29:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:29:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:29:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure input_change [2022-11-23 14:29:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure input_change [2022-11-23 14:29:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_tx_g_parameters [2022-11-23 14:29:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_tx_g_parameters [2022-11-23 14:29:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_querymenu [2022-11-23 14:29:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_querymenu [2022-11-23 14:29:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:29:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:29:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_probe [2022-11-23 14:29:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_probe [2022-11-23 14:29:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-23 14:29:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-23 14:29:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_shutdown [2022-11-23 14:29:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_shutdown [2022-11-23 14:29:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:29:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:29:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:29:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:29:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure control_tx_enable [2022-11-23 14:29:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure control_tx_enable [2022-11-23 14:29:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:29:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:29:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:29:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:29:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:29:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:29:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_freq_to_clock_divider [2022-11-23 14:29:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_freq_to_clock_divider [2022-11-23 14:29:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_demodulation_enable [2022-11-23 14:29:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_demodulation_enable [2022-11-23 14:29:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 14:29:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 14:29:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_work_handler [2022-11-23 14:29:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_work_handler [2022-11-23 14:29:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:29:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:29:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:29:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_write [2022-11-23 14:29:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_write [2022-11-23 14:29:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:29:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-23 14:29:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-23 14:29:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure set_volume [2022-11-23 14:29:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure set_volume [2022-11-23 14:29:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure cx231xx_initialize [2022-11-23 14:29:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cx231xx_initialize [2022-11-23 14:29:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_g_ext_ctrls [2022-11-23 14:29:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_g_ext_ctrls [2022-11-23 14:29:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:29:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_notify [2022-11-23 14:29:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_notify [2022-11-23 14:29:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:29:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:29:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 14:29:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 14:29:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-23 14:29:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-23 14:29:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:29:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:29:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 14:29:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 14:29:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_try_ext_ctrls [2022-11-23 14:29:52,952 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_try_ext_ctrls [2022-11-23 14:29:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-23 14:29:52,952 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-23 14:29:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_rx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_rx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure irqenable_tx [2022-11-23 14:29:52,952 INFO L138 BoogieDeclarations]: Found implementation of procedure irqenable_tx [2022-11-23 14:29:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_subdev_queryctrl [2022-11-23 14:29:52,953 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_subdev_queryctrl [2022-11-23 14:29:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_freq [2022-11-23 14:29:52,953 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_freq [2022-11-23 14:29:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_std [2022-11-23 14:29:52,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_std [2022-11-23 14:29:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_ir_rx_s_parameters [2022-11-23 14:29:52,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_ir_rx_s_parameters [2022-11-23 14:29:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure to_state [2022-11-23 14:29:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure to_state [2022-11-23 14:29:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_g_register [2022-11-23 14:29:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_g_register [2022-11-23 14:29:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:29:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_register [2022-11-23 14:29:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_register [2022-11-23 14:29:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure set_input [2022-11-23 14:29:52,956 INFO L138 BoogieDeclarations]: Found implementation of procedure set_input [2022-11-23 14:29:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure cx23888_std_setup [2022-11-23 14:29:52,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cx23888_std_setup [2022-11-23 14:29:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-23 14:29:52,956 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-23 14:29:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure irqenable_rx [2022-11-23 14:29:52,956 INFO L138 BoogieDeclarations]: Found implementation of procedure irqenable_rx [2022-11-23 14:29:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_and_or4 [2022-11-23 14:29:52,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_and_or4 [2022-11-23 14:29:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_read [2022-11-23 14:29:52,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_read [2022-11-23 14:29:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:29:52,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:29:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_s_sliced_fmt [2022-11-23 14:29:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_s_sliced_fmt [2022-11-23 14:29:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2022-11-23 14:29:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2022-11-23 14:29:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_adapter_id [2022-11-23 14:29:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_adapter_id [2022-11-23 14:29:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure clock_divider_to_carrier_freq [2022-11-23 14:29:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure clock_divider_to_carrier_freq [2022-11-23 14:29:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-23 14:29:52,960 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-23 14:29:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure control_rx_s_edge_detection [2022-11-23 14:29:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure control_rx_s_edge_detection [2022-11-23 14:29:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-23 14:29:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-23 14:29:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure cx25840_read4 [2022-11-23 14:29:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure cx25840_read4 [2022-11-23 14:29:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:29:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:29:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_rx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_rx_params_lock_of_cx25840_ir_state [2022-11-23 14:29:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:29:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-23 14:29:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-23 14:29:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23885 [2022-11-23 14:29:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23885 [2022-11-23 14:29:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_pulse_clocks [2022-11-23 14:29:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_pulse_clocks [2022-11-23 14:29:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23888 [2022-11-23 14:29:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23888 [2022-11-23 14:29:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure is_cx23887 [2022-11-23 14:29:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cx23887 [2022-11-23 14:29:54,495 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:29:54,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:29:55,418 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:31:08,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:31:14,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:31:14,996 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:31:15,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:15 BoogieIcfgContainer [2022-11-23 14:31:15,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:31:15,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:31:15,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:31:15,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:31:15,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:46" (1/3) ... [2022-11-23 14:31:15,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd90ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:15, skipping insertion in model container [2022-11-23 14:31:15,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:51" (2/3) ... [2022-11-23 14:31:15,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd90ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:15, skipping insertion in model container [2022-11-23 14:31:15,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:15" (3/3) ... [2022-11-23 14:31:15,024 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--i2c--cx25840--cx25840.ko-entry_point.cil.out.i [2022-11-23 14:31:15,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:31:15,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:31:15,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:31:15,275 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;@44eeaffa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:31:15,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:31:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 8065 states, 4360 states have (on average 1.1426605504587155) internal successors, (4982), 4406 states have internal predecessors, (4982), 3584 states have call successors, (3584), 120 states have call predecessors, (3584), 119 states have return successors, (3569), 3561 states have call predecessors, (3569), 3569 states have call successors, (3569) [2022-11-23 14:31:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-23 14:31:15,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:15,356 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:15,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:15,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1151486498, now seen corresponding path program 1 times [2022-11-23 14:31:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:15,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550399868] [2022-11-23 14:31:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:31:17,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550399868] [2022-11-23 14:31:17,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550399868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:17,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:17,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831041094] [2022-11-23 14:31:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:17,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:17,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:31:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:17,137 INFO L87 Difference]: Start difference. First operand has 8065 states, 4360 states have (on average 1.1426605504587155) internal successors, (4982), 4406 states have internal predecessors, (4982), 3584 states have call successors, (3584), 120 states have call predecessors, (3584), 119 states have return successors, (3569), 3561 states have call predecessors, (3569), 3569 states have call successors, (3569) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-23 14:31:19,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:31:22,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:25,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:25,803 INFO L93 Difference]: Finished difference Result 24025 states and 36219 transitions. [2022-11-23 14:31:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:25,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 353 [2022-11-23 14:31:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:26,004 INFO L225 Difference]: With dead ends: 24025 [2022-11-23 14:31:26,005 INFO L226 Difference]: Without dead ends: 15989 [2022-11-23 14:31:26,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:26,099 INFO L413 NwaCegarLoop]: 15420 mSDtfsCounter, 11951 mSDsluCounter, 11861 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11954 SdHoareTripleChecker+Valid, 27281 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:26,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11954 Valid, 27281 Invalid, 525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 520 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-11-23 14:31:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15989 states. [2022-11-23 14:31:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15989 to 15982. [2022-11-23 14:31:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15982 states, 8661 states have (on average 1.138667590347535) internal successors, (9862), 8711 states have internal predecessors, (9862), 7084 states have call successors, (7084), 237 states have call predecessors, (7084), 236 states have return successors, (7077), 7057 states have call predecessors, (7077), 7074 states have call successors, (7077) [2022-11-23 14:31:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15982 states to 15982 states and 24023 transitions. [2022-11-23 14:31:38,999 INFO L78 Accepts]: Start accepts. Automaton has 15982 states and 24023 transitions. Word has length 353 [2022-11-23 14:31:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:39,006 INFO L495 AbstractCegarLoop]: Abstraction has 15982 states and 24023 transitions. [2022-11-23 14:31:39,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-23 14:31:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15982 states and 24023 transitions. [2022-11-23 14:31:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-23 14:31:39,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:39,022 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:39,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:31:39,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash -641572031, now seen corresponding path program 1 times [2022-11-23 14:31:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141262006] [2022-11-23 14:31:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:31:40,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141262006] [2022-11-23 14:31:40,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141262006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:31:40,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:31:40,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:31:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315409427] [2022-11-23 14:31:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:31:40,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:31:40,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:31:40,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:31:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:40,130 INFO L87 Difference]: Start difference. First operand 15982 states and 24023 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:31:42,211 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 [] [2022-11-23 14:31:45,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:31:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:47,050 INFO L93 Difference]: Finished difference Result 16088 states and 24137 transitions. [2022-11-23 14:31:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:31:47,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 356 [2022-11-23 14:31:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:47,246 INFO L225 Difference]: With dead ends: 16088 [2022-11-23 14:31:47,247 INFO L226 Difference]: Without dead ends: 16085 [2022-11-23 14:31:47,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:31:47,271 INFO L413 NwaCegarLoop]: 11888 mSDtfsCounter, 12000 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12003 SdHoareTripleChecker+Valid, 11979 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:47,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12003 Valid, 11979 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 14:31:47,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16085 states. [2022-11-23 14:31:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16085 to 16082. [2022-11-23 14:31:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16082 states, 8715 states have (on average 1.138152610441767) internal successors, (9919), 8766 states have internal predecessors, (9919), 7108 states have call successors, (7108), 258 states have call predecessors, (7108), 258 states have return successors, (7105), 7082 states have call predecessors, (7105), 7099 states have call successors, (7105) [2022-11-23 14:31:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16082 states to 16082 states and 24132 transitions. [2022-11-23 14:31:59,596 INFO L78 Accepts]: Start accepts. Automaton has 16082 states and 24132 transitions. Word has length 356 [2022-11-23 14:31:59,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:59,598 INFO L495 AbstractCegarLoop]: Abstraction has 16082 states and 24132 transitions. [2022-11-23 14:31:59,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:31:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 16082 states and 24132 transitions. [2022-11-23 14:31:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-23 14:31:59,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:59,609 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:59,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:31:59,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1579822153, now seen corresponding path program 1 times [2022-11-23 14:31:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:59,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889216217] [2022-11-23 14:31:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:32:00,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:32:00,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889216217] [2022-11-23 14:32:00,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889216217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:00,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:32:00,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:32:00,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359825920] [2022-11-23 14:32:00,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:00,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:32:00,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:32:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:00,569 INFO L87 Difference]: Start difference. First operand 16082 states and 24132 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:32:02,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:06,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:32:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:32:07,284 INFO L93 Difference]: Finished difference Result 16087 states and 24135 transitions. [2022-11-23 14:32:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:32:07,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 357 [2022-11-23 14:32:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:32:07,426 INFO L225 Difference]: With dead ends: 16087 [2022-11-23 14:32:07,426 INFO L226 Difference]: Without dead ends: 16084 [2022-11-23 14:32:07,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:07,450 INFO L413 NwaCegarLoop]: 11886 mSDtfsCounter, 11997 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12000 SdHoareTripleChecker+Valid, 11977 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:32:07,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12000 Valid, 11977 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 14:32:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16084 states. [2022-11-23 14:32:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16084 to 16081. [2022-11-23 14:32:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16081 states, 8715 states have (on average 1.1380378657487091) internal successors, (9918), 8765 states have internal predecessors, (9918), 7107 states have call successors, (7107), 258 states have call predecessors, (7107), 258 states have return successors, (7105), 7082 states have call predecessors, (7105), 7099 states have call successors, (7105) [2022-11-23 14:32:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16081 states to 16081 states and 24130 transitions. [2022-11-23 14:32:19,812 INFO L78 Accepts]: Start accepts. Automaton has 16081 states and 24130 transitions. Word has length 357 [2022-11-23 14:32:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:32:19,813 INFO L495 AbstractCegarLoop]: Abstraction has 16081 states and 24130 transitions. [2022-11-23 14:32:19,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:32:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 16081 states and 24130 transitions. [2022-11-23 14:32:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-23 14:32:19,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:32:19,824 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:32:19,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:32:19,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:32:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:32:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1723569988, now seen corresponding path program 1 times [2022-11-23 14:32:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:32:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517627182] [2022-11-23 14:32:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:32:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:32:20,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:32:20,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517627182] [2022-11-23 14:32:20,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517627182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:20,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:32:20,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:32:20,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842686630] [2022-11-23 14:32:20,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:20,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:32:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:32:20,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:20,709 INFO L87 Difference]: Start difference. First operand 16081 states and 24130 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:32:22,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:32:26,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:32:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:32:27,284 INFO L93 Difference]: Finished difference Result 16086 states and 24133 transitions. [2022-11-23 14:32:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:32:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 358 [2022-11-23 14:32:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:32:27,399 INFO L225 Difference]: With dead ends: 16086 [2022-11-23 14:32:27,399 INFO L226 Difference]: Without dead ends: 16083 [2022-11-23 14:32:27,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:27,419 INFO L413 NwaCegarLoop]: 11884 mSDtfsCounter, 11994 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11997 SdHoareTripleChecker+Valid, 11975 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:32:27,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11997 Valid, 11975 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:32:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16083 states. [2022-11-23 14:32:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16083 to 16080. [2022-11-23 14:32:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 8715 states have (on average 1.137923121055651) internal successors, (9917), 8764 states have internal predecessors, (9917), 7106 states have call successors, (7106), 258 states have call predecessors, (7106), 258 states have return successors, (7105), 7082 states have call predecessors, (7105), 7099 states have call successors, (7105) [2022-11-23 14:32:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 24128 transitions. [2022-11-23 14:32:41,476 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 24128 transitions. Word has length 358 [2022-11-23 14:32:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:32:41,477 INFO L495 AbstractCegarLoop]: Abstraction has 16080 states and 24128 transitions. [2022-11-23 14:32:41,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:32:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 24128 transitions. [2022-11-23 14:32:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-23 14:32:41,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:32:41,485 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:32:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:32:41,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:32:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:32:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1884790444, now seen corresponding path program 1 times [2022-11-23 14:32:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:32:41,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110643236] [2022-11-23 14:32:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:32:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:32:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:32:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:32:42,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:32:42,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110643236] [2022-11-23 14:32:42,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110643236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:32:42,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:32:42,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:32:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822949683] [2022-11-23 14:32:42,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:32:42,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:32:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:32:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:32:42,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:42,203 INFO L87 Difference]: Start difference. First operand 16080 states and 24128 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:32:44,281 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 [] [2022-11-23 14:32:47,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:32:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:32:48,491 INFO L93 Difference]: Finished difference Result 16085 states and 24131 transitions. [2022-11-23 14:32:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:32:48,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 359 [2022-11-23 14:32:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:32:48,615 INFO L225 Difference]: With dead ends: 16085 [2022-11-23 14:32:48,615 INFO L226 Difference]: Without dead ends: 16082 [2022-11-23 14:32:48,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:32:48,633 INFO L413 NwaCegarLoop]: 11882 mSDtfsCounter, 11991 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11994 SdHoareTripleChecker+Valid, 11973 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:32:48,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11994 Valid, 11973 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 14:32:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-11-23 14:33:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 16079. [2022-11-23 14:33:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 8715 states have (on average 1.1378083763625932) internal successors, (9916), 8763 states have internal predecessors, (9916), 7105 states have call successors, (7105), 258 states have call predecessors, (7105), 258 states have return successors, (7105), 7082 states have call predecessors, (7105), 7099 states have call successors, (7105) [2022-11-23 14:33:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 24126 transitions. [2022-11-23 14:33:02,055 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 24126 transitions. Word has length 359 [2022-11-23 14:33:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:33:02,056 INFO L495 AbstractCegarLoop]: Abstraction has 16079 states and 24126 transitions. [2022-11-23 14:33:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:33:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 24126 transitions. [2022-11-23 14:33:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-23 14:33:02,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:02,065 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:33:02,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:33:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1707305145, now seen corresponding path program 1 times [2022-11-23 14:33:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761156694] [2022-11-23 14:33:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:33:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:33:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:33:02,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:33:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761156694] [2022-11-23 14:33:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761156694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:33:02,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:33:02,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:33:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050808204] [2022-11-23 14:33:02,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:33:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:33:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:33:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:33:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:02,759 INFO L87 Difference]: Start difference. First operand 16079 states and 24126 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:33:04,838 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 [] [2022-11-23 14:33:08,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:33:09,318 INFO L93 Difference]: Finished difference Result 16187 states and 24202 transitions. [2022-11-23 14:33:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:33:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 360 [2022-11-23 14:33:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:33:09,435 INFO L225 Difference]: With dead ends: 16187 [2022-11-23 14:33:09,436 INFO L226 Difference]: Without dead ends: 16183 [2022-11-23 14:33:09,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:09,459 INFO L413 NwaCegarLoop]: 11830 mSDtfsCounter, 11844 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11844 SdHoareTripleChecker+Valid, 11980 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:33:09,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11844 Valid, 11980 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 14:33:09,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16183 states. [2022-11-23 14:33:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16183 to 16177. [2022-11-23 14:33:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 8767 states have (on average 1.1371050530398084) internal successors, (9969), 8813 states have internal predecessors, (9969), 7110 states have call successors, (7110), 299 states have call predecessors, (7110), 299 states have return successors, (7112), 7089 states have call predecessors, (7112), 7106 states have call successors, (7112) [2022-11-23 14:33:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 24191 transitions. [2022-11-23 14:33:25,006 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 24191 transitions. Word has length 360 [2022-11-23 14:33:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:33:25,007 INFO L495 AbstractCegarLoop]: Abstraction has 16177 states and 24191 transitions. [2022-11-23 14:33:25,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:33:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 24191 transitions. [2022-11-23 14:33:25,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-23 14:33:25,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:25,016 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:25,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:33:25,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:33:25,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1393113841, now seen corresponding path program 1 times [2022-11-23 14:33:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:25,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492443329] [2022-11-23 14:33:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:33:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:33:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2076 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2022-11-23 14:33:25,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:33:25,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492443329] [2022-11-23 14:33:25,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492443329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:33:25,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:33:25,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:33:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915382069] [2022-11-23 14:33:25,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:33:25,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:33:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:33:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:33:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:25,713 INFO L87 Difference]: Start difference. First operand 16177 states and 24191 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:33:27,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:33:31,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:33:32,411 INFO L93 Difference]: Finished difference Result 16262 states and 24270 transitions. [2022-11-23 14:33:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:33:32,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 361 [2022-11-23 14:33:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:33:32,517 INFO L225 Difference]: With dead ends: 16262 [2022-11-23 14:33:32,517 INFO L226 Difference]: Without dead ends: 16251 [2022-11-23 14:33:32,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:32,533 INFO L413 NwaCegarLoop]: 11870 mSDtfsCounter, 11879 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11882 SdHoareTripleChecker+Valid, 12069 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:33:32,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11882 Valid, 12069 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 14:33:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2022-11-23 14:33:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 16248. [2022-11-23 14:33:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16248 states, 8802 states have (on average 1.1362190411270165) internal successors, (10001), 8846 states have internal predecessors, (10001), 7124 states have call successors, (7124), 321 states have call predecessors, (7124), 321 states have return successors, (7128), 7105 states have call predecessors, (7128), 7122 states have call successors, (7128) [2022-11-23 14:33:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 24253 transitions. [2022-11-23 14:33:49,608 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 24253 transitions. Word has length 361 [2022-11-23 14:33:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:33:49,609 INFO L495 AbstractCegarLoop]: Abstraction has 16248 states and 24253 transitions. [2022-11-23 14:33:49,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-23 14:33:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 24253 transitions. [2022-11-23 14:33:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-23 14:33:49,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:33:49,632 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:33:49,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:33:49,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:33:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:33:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash 979267000, now seen corresponding path program 1 times [2022-11-23 14:33:49,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:33:49,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220345599] [2022-11-23 14:33:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:33:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:33:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:33:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-11-23 14:33:50,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:33:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220345599] [2022-11-23 14:33:50,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220345599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:33:50,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:33:50,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:33:50,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084051541] [2022-11-23 14:33:50,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:33:50,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:33:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:33:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:33:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:33:50,273 INFO L87 Difference]: Start difference. First operand 16248 states and 24253 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-23 14:33:52,353 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 [] [2022-11-23 14:33:55,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:33:58,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:34:01,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:34:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:34:02,861 INFO L93 Difference]: Finished difference Result 48425 states and 72272 transitions. [2022-11-23 14:34:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:34:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 445 [2022-11-23 14:34:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:34:03,113 INFO L225 Difference]: With dead ends: 48425 [2022-11-23 14:34:03,114 INFO L226 Difference]: Without dead ends: 32240 [2022-11-23 14:34:03,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:03,255 INFO L413 NwaCegarLoop]: 15311 mSDtfsCounter, 11798 mSDsluCounter, 11781 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11798 SdHoareTripleChecker+Valid, 27092 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:34:03,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11798 Valid, 27092 Invalid, 543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 539 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-11-23 14:34:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32240 states. [2022-11-23 14:34:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 32235. [2022-11-23 14:34:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32235 states, 17447 states have (on average 1.1348082764945262) internal successors, (19799), 17535 states have internal predecessors, (19799), 14151 states have call successors, (14151), 635 states have call predecessors, (14151), 636 states have return successors, (14157), 14114 states have call predecessors, (14157), 14149 states have call successors, (14157) [2022-11-23 14:34:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32235 states to 32235 states and 48107 transitions. [2022-11-23 14:34:49,780 INFO L78 Accepts]: Start accepts. Automaton has 32235 states and 48107 transitions. Word has length 445 [2022-11-23 14:34:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:34:49,782 INFO L495 AbstractCegarLoop]: Abstraction has 32235 states and 48107 transitions. [2022-11-23 14:34:49,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-23 14:34:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 32235 states and 48107 transitions. [2022-11-23 14:34:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-23 14:34:49,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:34:49,811 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 13, 13, 13, 13, 13, 13, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:34:49,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:34:49,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:34:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:34:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash 589741205, now seen corresponding path program 1 times [2022-11-23 14:34:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:34:49,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141364063] [2022-11-23 14:34:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:34:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:34:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:34:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2190 trivial. 0 not checked. [2022-11-23 14:34:50,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:34:50,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141364063] [2022-11-23 14:34:50,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141364063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:34:50,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:34:50,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:34:50,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247090039] [2022-11-23 14:34:50,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:34:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:34:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:34:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:34:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:34:50,698 INFO L87 Difference]: Start difference. First operand 32235 states and 48107 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 14:34:52,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:34:58,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:35:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:35:01,128 INFO L93 Difference]: Finished difference Result 94637 states and 141470 transitions. [2022-11-23 14:35:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:35:01,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 487 [2022-11-23 14:35:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:35:01,586 INFO L225 Difference]: With dead ends: 94637 [2022-11-23 14:35:01,587 INFO L226 Difference]: Without dead ends: 62465 [2022-11-23 14:35:01,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:35:02,002 INFO L413 NwaCegarLoop]: 15466 mSDtfsCounter, 11561 mSDsluCounter, 11807 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11563 SdHoareTripleChecker+Valid, 27273 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:35:02,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11563 Valid, 27273 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 535 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-23 14:35:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62465 states. [2022-11-23 14:36:12,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62465 to 62455. [2022-11-23 14:36:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62455 states, 33710 states have (on average 1.1305250667457727) internal successors, (38110), 33878 states have internal predecessors, (38110), 27662 states have call successors, (27662), 1081 states have call predecessors, (27662), 1082 states have return successors, (27672), 27589 states have call predecessors, (27672), 27660 states have call successors, (27672) [2022-11-23 14:36:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62455 states to 62455 states and 93444 transitions. [2022-11-23 14:36:13,404 INFO L78 Accepts]: Start accepts. Automaton has 62455 states and 93444 transitions. Word has length 487 [2022-11-23 14:36:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:13,405 INFO L495 AbstractCegarLoop]: Abstraction has 62455 states and 93444 transitions. [2022-11-23 14:36:13,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 14:36:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 62455 states and 93444 transitions. [2022-11-23 14:36:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-11-23 14:36:13,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:13,505 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:36:13,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1592314582, now seen corresponding path program 1 times [2022-11-23 14:36:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:13,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90065089] [2022-11-23 14:36:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6026 trivial. 0 not checked. [2022-11-23 14:36:14,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:14,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90065089] [2022-11-23 14:36:14,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90065089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:14,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:14,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:36:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100733079] [2022-11-23 14:36:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:14,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:36:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:36:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:14,784 INFO L87 Difference]: Start difference. First operand 62455 states and 93444 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 14:36:16,867 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 [] [2022-11-23 14:36:22,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:36:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:24,893 INFO L93 Difference]: Finished difference Result 62457 states and 93445 transitions. [2022-11-23 14:36:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:36:24,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 595 [2022-11-23 14:36:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:25,280 INFO L225 Difference]: With dead ends: 62457 [2022-11-23 14:36:25,280 INFO L226 Difference]: Without dead ends: 62454 [2022-11-23 14:36:25,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:25,323 INFO L413 NwaCegarLoop]: 11840 mSDtfsCounter, 140 mSDsluCounter, 11720 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 23560 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:25,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 23560 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 511 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 14:36:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62454 states. [2022-11-23 14:37:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62454 to 62454. [2022-11-23 14:37:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62454 states, 33710 states have (on average 1.1303470780183922) internal successors, (38104), 33877 states have internal predecessors, (38104), 27661 states have call successors, (27661), 1081 states have call predecessors, (27661), 1082 states have return successors, (27672), 27589 states have call predecessors, (27672), 27660 states have call successors, (27672) [2022-11-23 14:37:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62454 states to 62454 states and 93437 transitions. [2022-11-23 14:37:30,219 INFO L78 Accepts]: Start accepts. Automaton has 62454 states and 93437 transitions. Word has length 595 [2022-11-23 14:37:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:30,220 INFO L495 AbstractCegarLoop]: Abstraction has 62454 states and 93437 transitions. [2022-11-23 14:37:30,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 14:37:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 62454 states and 93437 transitions. [2022-11-23 14:37:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-11-23 14:37:30,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:30,312 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:37:30,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:37:30,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash 955237914, now seen corresponding path program 1 times [2022-11-23 14:37:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:30,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371193702] [2022-11-23 14:37:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6026 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6026 trivial. 0 not checked. [2022-11-23 14:37:31,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:31,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371193702] [2022-11-23 14:37:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371193702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:37:31,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:37:31,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:37:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370781855] [2022-11-23 14:37:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:37:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:37:31,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:37:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:31,465 INFO L87 Difference]: Start difference. First operand 62454 states and 93437 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 14:37:33,544 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 [] [2022-11-23 14:37:39,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:37:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:41,324 INFO L93 Difference]: Finished difference Result 62457 states and 93439 transitions. [2022-11-23 14:37:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:37:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 596 [2022-11-23 14:37:41,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:41,664 INFO L225 Difference]: With dead ends: 62457 [2022-11-23 14:37:41,664 INFO L226 Difference]: Without dead ends: 62454 [2022-11-23 14:37:41,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:37:41,716 INFO L413 NwaCegarLoop]: 11842 mSDtfsCounter, 168 mSDsluCounter, 11747 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 23589 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:41,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 23589 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 522 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 14:37:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62454 states. [2022-11-23 14:38:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62454 to 62454. [2022-11-23 14:38:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62454 states, 33710 states have (on average 1.1301690892910117) internal successors, (38098), 33877 states have internal predecessors, (38098), 27661 states have call successors, (27661), 1081 states have call predecessors, (27661), 1082 states have return successors, (27672), 27589 states have call predecessors, (27672), 27660 states have call successors, (27672) [2022-11-23 14:38:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62454 states to 62454 states and 93431 transitions. [2022-11-23 14:38:51,337 INFO L78 Accepts]: Start accepts. Automaton has 62454 states and 93431 transitions. Word has length 596 [2022-11-23 14:38:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:38:51,339 INFO L495 AbstractCegarLoop]: Abstraction has 62454 states and 93431 transitions. [2022-11-23 14:38:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 14:38:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 62454 states and 93431 transitions. [2022-11-23 14:38:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-11-23 14:38:51,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:38:51,573 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:38:51,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:38:51,574 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:38:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:38:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash -491122151, now seen corresponding path program 1 times [2022-11-23 14:38:51,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:38:51,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594971932] [2022-11-23 14:38:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:51,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:38:52,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:38:52,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130018408] [2022-11-23 14:38:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:38:52,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:38:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:38:52,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:38:52,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:38:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:38:56,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 11150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:38:56,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:38:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6407 backedges. 3362 proven. 0 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-11-23 14:38:57,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:38:57,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:38:57,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594971932] [2022-11-23 14:38:57,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:38:57,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130018408] [2022-11-23 14:38:57,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130018408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:38:57,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:38:57,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:38:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954593946] [2022-11-23 14:38:57,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:38:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:38:57,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:38:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:38:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:38:57,506 INFO L87 Difference]: Start difference. First operand 62454 states and 93431 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (89), 3 states have call predecessors, (89), 3 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2022-11-23 14:38:59,563 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 [] [2022-11-23 14:39:06,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:39:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:08,418 INFO L93 Difference]: Finished difference Result 101112 states and 151286 transitions. [2022-11-23 14:39:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (89), 3 states have call predecessors, (89), 3 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 812 [2022-11-23 14:39:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:08,776 INFO L225 Difference]: With dead ends: 101112 [2022-11-23 14:39:08,776 INFO L226 Difference]: Without dead ends: 31396 [2022-11-23 14:39:09,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:09,033 INFO L413 NwaCegarLoop]: 22705 mSDtfsCounter, 11899 mSDsluCounter, 11044 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11902 SdHoareTripleChecker+Valid, 33749 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:09,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11902 Valid, 33749 Invalid, 631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 628 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 14:39:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31396 states. [2022-11-23 14:39:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31396 to 31393. [2022-11-23 14:39:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31393 states, 16942 states have (on average 1.1293825994569708) internal successors, (19134), 17025 states have internal predecessors, (19134), 13879 states have call successors, (13879), 571 states have call predecessors, (13879), 571 states have return successors, (13883), 13844 states have call predecessors, (13883), 13878 states have call successors, (13883) [2022-11-23 14:39:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31393 states to 31393 states and 46896 transitions. [2022-11-23 14:39:44,007 INFO L78 Accepts]: Start accepts. Automaton has 31393 states and 46896 transitions. Word has length 812 [2022-11-23 14:39:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:39:44,009 INFO L495 AbstractCegarLoop]: Abstraction has 31393 states and 46896 transitions. [2022-11-23 14:39:44,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (89), 3 states have call predecessors, (89), 3 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2022-11-23 14:39:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31393 states and 46896 transitions. [2022-11-23 14:39:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2022-11-23 14:39:44,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:39:44,105 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:39:44,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:39:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 14:39:44,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:39:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:39:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 664217109, now seen corresponding path program 1 times [2022-11-23 14:39:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:39:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825278730] [2022-11-23 14:39:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:39:44,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:39:44,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804092792] [2022-11-23 14:39:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:39:44,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:39:44,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:44,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:39:44,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:39:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:39:48,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 11091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:39:48,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:39:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6382 backedges. 1637 proven. 0 refuted. 0 times theorem prover too weak. 4745 trivial. 0 not checked. [2022-11-23 14:39:49,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:39:49,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:39:49,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825278730] [2022-11-23 14:39:49,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:39:49,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804092792] [2022-11-23 14:39:49,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804092792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:39:49,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:39:49,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:39:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957919759] [2022-11-23 14:39:49,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:39:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:39:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:39:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:39:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:49,125 INFO L87 Difference]: Start difference. First operand 31393 states and 46896 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 3 states have call successors, (89), 3 states have call predecessors, (89), 3 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2022-11-23 14:39:50,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:51,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:39:57,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:39:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:39:59,404 INFO L93 Difference]: Finished difference Result 31519 states and 47029 transitions. [2022-11-23 14:39:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:39:59,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 3 states have call successors, (89), 3 states have call predecessors, (89), 3 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 796 [2022-11-23 14:39:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:39:59,515 INFO L225 Difference]: With dead ends: 31519 [2022-11-23 14:39:59,515 INFO L226 Difference]: Without dead ends: 23643 [2022-11-23 14:39:59,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:39:59,581 INFO L413 NwaCegarLoop]: 22707 mSDtfsCounter, 11909 mSDsluCounter, 11070 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11912 SdHoareTripleChecker+Valid, 33777 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:39:59,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11912 Valid, 33777 Invalid, 640 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 637 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 14:39:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23643 states. [2022-11-23 14:40:26,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23643 to 23637. [2022-11-23 14:40:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23637 states, 12764 states have (on average 1.1300532748354748) internal successors, (14424), 12826 states have internal predecessors, (14424), 10440 states have call successors, (10440), 433 states have call predecessors, (10440), 432 states have return successors, (10439), 10413 states have call predecessors, (10439), 10439 states have call successors, (10439) [2022-11-23 14:40:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23637 states to 23637 states and 35303 transitions. [2022-11-23 14:40:27,122 INFO L78 Accepts]: Start accepts. Automaton has 23637 states and 35303 transitions. Word has length 796 [2022-11-23 14:40:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:27,123 INFO L495 AbstractCegarLoop]: Abstraction has 23637 states and 35303 transitions. [2022-11-23 14:40:27,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 3 states have call successors, (89), 3 states have call predecessors, (89), 3 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2022-11-23 14:40:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 23637 states and 35303 transitions. [2022-11-23 14:40:27,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2022-11-23 14:40:27,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:27,177 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 33, 33, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:27,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 14:40:27,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1295924264, now seen corresponding path program 1 times [2022-11-23 14:40:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868088135] [2022-11-23 14:40:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:27,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:40:27,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680805726] [2022-11-23 14:40:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:27,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:27,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:27,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:40:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:32,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 11084 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:40:32,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:40:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6378 backedges. 2853 proven. 0 refuted. 0 times theorem prover too weak. 3525 trivial. 0 not checked. [2022-11-23 14:40:33,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:40:33,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868088135] [2022-11-23 14:40:33,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:40:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680805726] [2022-11-23 14:40:33,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680805726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:33,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:33,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:40:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400573380] [2022-11-23 14:40:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:33,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:40:33,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:40:33,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:33,626 INFO L87 Difference]: Start difference. First operand 23637 states and 35303 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2022-11-23 14:40:35,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:40,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:40:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:42,942 INFO L93 Difference]: Finished difference Result 47796 states and 71324 transitions. [2022-11-23 14:40:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:40:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) Word has length 794 [2022-11-23 14:40:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:43,184 INFO L225 Difference]: With dead ends: 47796 [2022-11-23 14:40:43,184 INFO L226 Difference]: Without dead ends: 31619 [2022-11-23 14:40:43,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:43,300 INFO L413 NwaCegarLoop]: 15304 mSDtfsCounter, 11805 mSDsluCounter, 11740 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11807 SdHoareTripleChecker+Valid, 27044 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:43,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11807 Valid, 27044 Invalid, 558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 540 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 14:40:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31619 states. [2022-11-23 14:41:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31619 to 31611. [2022-11-23 14:41:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31611 states, 17085 states have (on average 1.1312847527070529) internal successors, (19328), 17168 states have internal predecessors, (19328), 13946 states have call successors, (13946), 580 states have call predecessors, (13946), 579 states have return successors, (13947), 13910 states have call predecessors, (13947), 13945 states have call successors, (13947) [2022-11-23 14:41:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31611 states to 31611 states and 47221 transitions. [2022-11-23 14:41:18,722 INFO L78 Accepts]: Start accepts. Automaton has 31611 states and 47221 transitions. Word has length 794 [2022-11-23 14:41:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 31611 states and 47221 transitions. [2022-11-23 14:41:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 3 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2022-11-23 14:41:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 31611 states and 47221 transitions. [2022-11-23 14:41:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2022-11-23 14:41:18,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:18,795 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 13, 13, 13, 13, 13, 13, 9, 9, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:18,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:18,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:18,996 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash -892399999, now seen corresponding path program 1 times [2022-11-23 14:41:18,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:18,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323739551] [2022-11-23 14:41:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:18,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:19,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:41:19,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546706791] [2022-11-23 14:41:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:19,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:19,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:19,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:19,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:41:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:24,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 12597 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:41:24,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 5058 trivial. 0 not checked. [2022-11-23 14:41:26,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:26,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:26,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323739551] [2022-11-23 14:41:26,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:41:26,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546706791] [2022-11-23 14:41:26,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546706791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:26,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:26,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119862787] [2022-11-23 14:41:26,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:26,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:26,098 INFO L87 Difference]: Start difference. First operand 31611 states and 47221 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 3 states have call successors, (102), 3 states have call predecessors, (102), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2022-11-23 14:41:27,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:29,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:34,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:41:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:35,968 INFO L93 Difference]: Finished difference Result 31611 states and 47221 transitions. [2022-11-23 14:41:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:35,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 3 states have call successors, (102), 3 states have call predecessors, (102), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 856 [2022-11-23 14:41:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:35,971 INFO L225 Difference]: With dead ends: 31611 [2022-11-23 14:41:35,971 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:41:36,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:36,159 INFO L413 NwaCegarLoop]: 11822 mSDtfsCounter, 74 mSDsluCounter, 11673 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 23495 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:36,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 23495 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-23 14:41:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:41:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:41:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:41:36,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 856 [2022-11-23 14:41:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:36,168 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:41:36,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 3 states have call successors, (102), 3 states have call predecessors, (102), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2022-11-23 14:41:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:41:36,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:41:36,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:41:36,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 14:41:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f05c1baf-3501-475d-808a-4461ea3be406/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 14:41:36,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.