./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.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_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/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_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/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_c14e4af8-6323-4f36-bf38-cd5f9656aca8/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 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- 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 16:03:46,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:03:46,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:03:46,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:03:46,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:03:46,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:03:46,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:03:46,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:03:46,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:03:46,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:03:46,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:03:46,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:03:46,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:03:46,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:03:46,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:03:46,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:03:46,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:03:46,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:03:46,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:03:46,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:03:46,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:03:46,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:03:46,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:03:46,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:03:46,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:03:46,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:03:46,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:03:46,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:03:46,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:03:46,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:03:46,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:03:46,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:03:46,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:03:46,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:03:46,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:03:46,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:03:46,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:03:46,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:03:46,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:03:46,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:03:46,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:03:46,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:03:46,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:03:46,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:03:46,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:03:46,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:03:46,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:03:46,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:03:46,905 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:03:46,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:03:46,906 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:03:46,906 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:03:46,906 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:03:46,907 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:03:46,907 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:03:46,907 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:03:46,907 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:03:46,908 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:03:46,908 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:03:46,908 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:03:46,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:03:46,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:03:46,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:03:46,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:03:46,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:03:46,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:03:46,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:03:46,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:03:46,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:03:46,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:03:46,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:03:46,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:03:46,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:03:46,912 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:03:46,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:03:46,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:03:46,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:03:46,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:03:46,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:03:46,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:03:46,914 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_c14e4af8-6323-4f36-bf38-cd5f9656aca8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2022-11-23 16:03:47,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:03:47,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:03:47,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:03:47,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:03:47,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:03:47,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-11-23 16:03:50,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:03:51,093 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:03:51,094 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-11-23 16:03:51,138 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/data/5c7d12560/6fa220917de3481bb5f81a8bf79c483c/FLAG9b257a704 [2022-11-23 16:03:51,163 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/data/5c7d12560/6fa220917de3481bb5f81a8bf79c483c [2022-11-23 16:03:51,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:03:51,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:03:51,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:03:51,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:03:51,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:03:51,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:03:51" (1/1) ... [2022-11-23 16:03:51,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700b5412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:51, skipping insertion in model container [2022-11-23 16:03:51,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:03:51" (1/1) ... [2022-11-23 16:03:51,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:03:51,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:03:52,469 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_c14e4af8-6323-4f36-bf38-cd5f9656aca8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-11-23 16:03:53,120 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 16:03:53,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:03:53,156 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:03:53,355 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_c14e4af8-6323-4f36-bf38-cd5f9656aca8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-11-23 16:03:53,546 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-23 16:03:53,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:03:53,605 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:03:53,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53 WrapperNode [2022-11-23 16:03:53,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:03:53,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:03:53,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:03:53,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:03:53,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,818 INFO L138 Inliner]: procedures = 184, calls = 849, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2101 [2022-11-23 16:03:53,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:03:53,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:03:53,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:03:53,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:03:53,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:53,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:54,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:54,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:03:54,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:03:54,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:03:54,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:03:54,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (1/1) ... [2022-11-23 16:03:54,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:03:54,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:03:54,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:03:54,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:03:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2022-11-23 16:03:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2022-11-23 16:03:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 16:03:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 16:03:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2022-11-23 16:03:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2022-11-23 16:03:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 16:03:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 16:03:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2022-11-23 16:03:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2022-11-23 16:03:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 16:03:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 16:03:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:03:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-23 16:03:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-23 16:03:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2022-11-23 16:03:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2022-11-23 16:03:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-23 16:03:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-23 16:03:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2022-11-23 16:03:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2022-11-23 16:03:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 16:03:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 16:03:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-23 16:03:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-23 16:03:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2022-11-23 16:03:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2022-11-23 16:03:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2022-11-23 16:03:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2022-11-23 16:03:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2022-11-23 16:03:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2022-11-23 16:03:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-23 16:03:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-23 16:03:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 16:03:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 16:03:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2022-11-23 16:03:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2022-11-23 16:03:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2022-11-23 16:03:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2022-11-23 16:03:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-23 16:03:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-23 16:03:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 16:03:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 16:03:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:03:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 16:03:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 16:03:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 16:03:54,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 16:03:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2022-11-23 16:03:54,158 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2022-11-23 16:03:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 16:03:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 16:03:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-11-23 16:03:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-11-23 16:03:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 16:03:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 16:03:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 16:03:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 16:03:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:03:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2022-11-23 16:03:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2022-11-23 16:03:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 16:03:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 16:03:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 16:03:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 16:03:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:03:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2022-11-23 16:03:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2022-11-23 16:03:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:03:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:03:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 16:03:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 16:03:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 16:03:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2022-11-23 16:03:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2022-11-23 16:03:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-23 16:03:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-23 16:03:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:03:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 16:03:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-23 16:03:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-23 16:03:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 16:03:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 16:03:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 16:03:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 16:03:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 16:03:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 16:03:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2022-11-23 16:03:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2022-11-23 16:03:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2022-11-23 16:03:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2022-11-23 16:03:54,166 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 16:03:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 16:03:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-11-23 16:03:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-11-23 16:03:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 16:03:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 16:03:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:03:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:03:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-23 16:03:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-23 16:03:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 16:03:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 16:03:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2022-11-23 16:03:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2022-11-23 16:03:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2022-11-23 16:03:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2022-11-23 16:03:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2022-11-23 16:03:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2022-11-23 16:03:54,169 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 16:03:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 16:03:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 16:03:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 16:03:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 16:03:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 16:03:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 16:03:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 16:03:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2022-11-23 16:03:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2022-11-23 16:03:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2022-11-23 16:03:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2022-11-23 16:03:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:03:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2022-11-23 16:03:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2022-11-23 16:03:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 16:03:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 16:03:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 16:03:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 16:03:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:03:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:03:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2022-11-23 16:03:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2022-11-23 16:03:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2022-11-23 16:03:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2022-11-23 16:03:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 16:03:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 16:03:54,809 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:03:54,812 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:03:55,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 16:03:58,261 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:03:58,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:03:58,892 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-23 16:03:58,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:58 BoogieIcfgContainer [2022-11-23 16:03:58,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:03:58,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:03:58,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:03:58,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:03:58,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:03:51" (1/3) ... [2022-11-23 16:03:58,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7385c8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:58, skipping insertion in model container [2022-11-23 16:03:58,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:53" (2/3) ... [2022-11-23 16:03:58,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7385c8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:58, skipping insertion in model container [2022-11-23 16:03:58,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:58" (3/3) ... [2022-11-23 16:03:58,914 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-11-23 16:03:58,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:03:58,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:03:59,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:03:59,017 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;@42c476a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:03:59,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:03:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 638 states, 383 states have (on average 1.3446475195822454) internal successors, (515), 400 states have internal predecessors, (515), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2022-11-23 16:03:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 16:03:59,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:59,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:59,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:59,051 INFO L85 PathProgramCache]: Analyzing trace with hash 114985937, now seen corresponding path program 1 times [2022-11-23 16:03:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:59,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348405294] [2022-11-23 16:03:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:59,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 16:03:59,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348405294] [2022-11-23 16:03:59,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348405294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:59,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:59,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:03:59,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966546791] [2022-11-23 16:03:59,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:59,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:03:59,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:03:59,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:03:59,771 INFO L87 Difference]: Start difference. First operand has 638 states, 383 states have (on average 1.3446475195822454) internal successors, (515), 400 states have internal predecessors, (515), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 16:04:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:01,530 INFO L93 Difference]: Finished difference Result 1899 states and 2700 transitions. [2022-11-23 16:04:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:04:01,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-23 16:04:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:01,600 INFO L225 Difference]: With dead ends: 1899 [2022-11-23 16:04:01,605 INFO L226 Difference]: Without dead ends: 1233 [2022-11-23 16:04:01,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:04:01,624 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 879 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:01,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 2687 Invalid, 382 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 16:04:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-11-23 16:04:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1229. [2022-11-23 16:04:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 741 states have (on average 1.3265856950067476) internal successors, (983), 765 states have internal predecessors, (983), 370 states have call successors, (370), 118 states have call predecessors, (370), 117 states have return successors, (377), 367 states have call predecessors, (377), 369 states have call successors, (377) [2022-11-23 16:04:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1730 transitions. [2022-11-23 16:04:01,873 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1730 transitions. Word has length 26 [2022-11-23 16:04:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:01,874 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1730 transitions. [2022-11-23 16:04:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 16:04:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1730 transitions. [2022-11-23 16:04:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 16:04:01,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:01,899 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 16:04:01,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:04:01,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:01,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2097554049, now seen corresponding path program 1 times [2022-11-23 16:04:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:01,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082539981] [2022-11-23 16:04:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 16:04:02,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:02,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082539981] [2022-11-23 16:04:02,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082539981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:02,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242833465] [2022-11-23 16:04:02,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:02,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:02,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:02,163 INFO L87 Difference]: Start difference. First operand 1229 states and 1730 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 16:04:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:03,207 INFO L93 Difference]: Finished difference Result 2529 states and 3550 transitions. [2022-11-23 16:04:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-11-23 16:04:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:03,222 INFO L225 Difference]: With dead ends: 2529 [2022-11-23 16:04:03,223 INFO L226 Difference]: Without dead ends: 1305 [2022-11-23 16:04:03,228 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 16:04:03,230 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 75 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:03,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1492 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 16:04:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-23 16:04:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1299. [2022-11-23 16:04:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 791 states have (on average 1.3286978508217446) internal successors, (1051), 816 states have internal predecessors, (1051), 381 states have call successors, (381), 127 states have call predecessors, (381), 126 states have return successors, (388), 377 states have call predecessors, (388), 380 states have call successors, (388) [2022-11-23 16:04:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1820 transitions. [2022-11-23 16:04:03,348 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1820 transitions. Word has length 66 [2022-11-23 16:04:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:03,350 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1820 transitions. [2022-11-23 16:04:03,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 16:04:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1820 transitions. [2022-11-23 16:04:03,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:04:03,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:03,365 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:03,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:04:03,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2101880221, now seen corresponding path program 1 times [2022-11-23 16:04:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:03,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277576281] [2022-11-23 16:04:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 16:04:03,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:03,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277576281] [2022-11-23 16:04:03,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277576281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:03,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:03,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:03,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593567611] [2022-11-23 16:04:03,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:03,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:03,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:03,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:03,589 INFO L87 Difference]: Start difference. First operand 1299 states and 1820 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 16:04:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:04,734 INFO L93 Difference]: Finished difference Result 3513 states and 4890 transitions. [2022-11-23 16:04:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2022-11-23 16:04:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:04,750 INFO L225 Difference]: With dead ends: 3513 [2022-11-23 16:04:04,750 INFO L226 Difference]: Without dead ends: 2235 [2022-11-23 16:04:04,757 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 16:04:04,761 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 768 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:04,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1519 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 16:04:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-11-23 16:04:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2229. [2022-11-23 16:04:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1367 states have (on average 1.3057790782735919) internal successors, (1785), 1403 states have internal predecessors, (1785), 628 states have call successors, (628), 234 states have call predecessors, (628), 233 states have return successors, (638), 621 states have call predecessors, (638), 627 states have call successors, (638) [2022-11-23 16:04:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3051 transitions. [2022-11-23 16:04:04,907 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3051 transitions. Word has length 87 [2022-11-23 16:04:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:04,910 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3051 transitions. [2022-11-23 16:04:04,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 16:04:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3051 transitions. [2022-11-23 16:04:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:04:04,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:04,917 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:04:04,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1324395007, now seen corresponding path program 1 times [2022-11-23 16:04:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:04,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281467286] [2022-11-23 16:04:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 16:04:05,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:05,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281467286] [2022-11-23 16:04:05,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281467286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:05,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:05,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127029740] [2022-11-23 16:04:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:05,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:05,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:05,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:05,206 INFO L87 Difference]: Start difference. First operand 2229 states and 3051 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 16:04:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:06,208 INFO L93 Difference]: Finished difference Result 3376 states and 4632 transitions. [2022-11-23 16:04:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2022-11-23 16:04:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:06,227 INFO L225 Difference]: With dead ends: 3376 [2022-11-23 16:04:06,228 INFO L226 Difference]: Without dead ends: 2237 [2022-11-23 16:04:06,236 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 16:04:06,237 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 4 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:06,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1518 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 16:04:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-11-23 16:04:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2237. [2022-11-23 16:04:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1373 states have (on average 1.3044428259286234) internal successors, (1791), 1411 states have internal predecessors, (1791), 628 states have call successors, (628), 234 states have call predecessors, (628), 235 states have return successors, (640), 621 states have call predecessors, (640), 627 states have call successors, (640) [2022-11-23 16:04:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3059 transitions. [2022-11-23 16:04:06,385 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3059 transitions. Word has length 87 [2022-11-23 16:04:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:06,386 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3059 transitions. [2022-11-23 16:04:06,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 16:04:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3059 transitions. [2022-11-23 16:04:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 16:04:06,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:06,392 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:04:06,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 734425446, now seen corresponding path program 1 times [2022-11-23 16:04:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:06,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9366448] [2022-11-23 16:04:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 16:04:07,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:07,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9366448] [2022-11-23 16:04:07,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9366448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:07,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:07,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 16:04:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46497884] [2022-11-23 16:04:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:07,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 16:04:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 16:04:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:04:07,122 INFO L87 Difference]: Start difference. First operand 2237 states and 3059 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 16:04:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:13,425 INFO L93 Difference]: Finished difference Result 4583 states and 6293 transitions. [2022-11-23 16:04:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:04:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2022-11-23 16:04:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:13,451 INFO L225 Difference]: With dead ends: 4583 [2022-11-23 16:04:13,452 INFO L226 Difference]: Without dead ends: 2367 [2022-11-23 16:04:13,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:04:13,463 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2016 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 1321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:13,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 1326 Invalid, 4423 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1321 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 16:04:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-11-23 16:04:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2331. [2022-11-23 16:04:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 1429 states have (on average 1.2995101469559132) internal successors, (1857), 1471 states have internal predecessors, (1857), 664 states have call successors, (664), 234 states have call predecessors, (664), 237 states have return successors, (677), 657 states have call predecessors, (677), 663 states have call successors, (677) [2022-11-23 16:04:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3198 transitions. [2022-11-23 16:04:13,625 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3198 transitions. Word has length 88 [2022-11-23 16:04:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:13,626 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3198 transitions. [2022-11-23 16:04:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 16:04:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3198 transitions. [2022-11-23 16:04:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 16:04:13,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:13,641 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:13,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:04:13,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1946154262, now seen corresponding path program 1 times [2022-11-23 16:04:13,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:13,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987820213] [2022-11-23 16:04:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 16:04:14,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:14,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987820213] [2022-11-23 16:04:14,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987820213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:14,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:14,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:04:14,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657051723] [2022-11-23 16:04:14,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:14,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:04:14,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:14,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:04:14,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:04:14,357 INFO L87 Difference]: Start difference. First operand 2331 states and 3198 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 16:04:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:16,111 INFO L93 Difference]: Finished difference Result 4667 states and 6441 transitions. [2022-11-23 16:04:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:04:16,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-11-23 16:04:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:16,128 INFO L225 Difference]: With dead ends: 4667 [2022-11-23 16:04:16,128 INFO L226 Difference]: Without dead ends: 2357 [2022-11-23 16:04:16,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:04:16,140 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:16,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3034 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 16:04:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-11-23 16:04:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2347. [2022-11-23 16:04:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 1441 states have (on average 1.2970159611380985) internal successors, (1869), 1483 states have internal predecessors, (1869), 664 states have call successors, (664), 234 states have call predecessors, (664), 241 states have return successors, (685), 661 states have call predecessors, (685), 663 states have call successors, (685) [2022-11-23 16:04:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3218 transitions. [2022-11-23 16:04:16,353 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3218 transitions. Word has length 110 [2022-11-23 16:04:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:16,354 INFO L495 AbstractCegarLoop]: Abstraction has 2347 states and 3218 transitions. [2022-11-23 16:04:16,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 16:04:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3218 transitions. [2022-11-23 16:04:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 16:04:16,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:16,363 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2022-11-23 16:04:16,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:04:16,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash 334280081, now seen corresponding path program 1 times [2022-11-23 16:04:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:16,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14980909] [2022-11-23 16:04:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 16:04:16,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14980909] [2022-11-23 16:04:16,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14980909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:16,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193343555] [2022-11-23 16:04:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:16,692 INFO L87 Difference]: Start difference. First operand 2347 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 16:04:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:17,372 INFO L93 Difference]: Finished difference Result 4673 states and 6406 transitions. [2022-11-23 16:04:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:17,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2022-11-23 16:04:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:17,396 INFO L225 Difference]: With dead ends: 4673 [2022-11-23 16:04:17,396 INFO L226 Difference]: Without dead ends: 2334 [2022-11-23 16:04:17,406 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 16:04:17,408 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 841 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:17,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 826 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:04:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-11-23 16:04:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2334. [2022-11-23 16:04:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 1430 states have (on average 1.286013986013986) internal successors, (1839), 1472 states have internal predecessors, (1839), 662 states have call successors, (662), 234 states have call predecessors, (662), 241 states have return successors, (681), 659 states have call predecessors, (681), 661 states have call successors, (681) [2022-11-23 16:04:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3182 transitions. [2022-11-23 16:04:17,605 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3182 transitions. Word has length 124 [2022-11-23 16:04:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:17,607 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3182 transitions. [2022-11-23 16:04:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 16:04:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3182 transitions. [2022-11-23 16:04:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 16:04:17,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:17,615 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2022-11-23 16:04:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:04:17,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash 593958170, now seen corresponding path program 1 times [2022-11-23 16:04:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:17,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433240318] [2022-11-23 16:04:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-23 16:04:18,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:18,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433240318] [2022-11-23 16:04:18,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433240318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:18,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413313417] [2022-11-23 16:04:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:18,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:18,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:18,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:04:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:19,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 16:04:19,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:04:19,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-23 16:04:21,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413313417] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:21,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 16:04:21,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 24 [2022-11-23 16:04:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805022239] [2022-11-23 16:04:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 16:04:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 16:04:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2022-11-23 16:04:21,118 INFO L87 Difference]: Start difference. First operand 2334 states and 3182 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-23 16:04:30,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:30,852 INFO L93 Difference]: Finished difference Result 5430 states and 7558 transitions. [2022-11-23 16:04:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 16:04:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 130 [2022-11-23 16:04:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:30,881 INFO L225 Difference]: With dead ends: 5430 [2022-11-23 16:04:30,881 INFO L226 Difference]: Without dead ends: 4183 [2022-11-23 16:04:30,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2022-11-23 16:04:30,890 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 3357 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 2365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2365 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:30,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 2294 Invalid, 6392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2365 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 16:04:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-11-23 16:04:31,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3554. [2022-11-23 16:04:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2173 states have (on average 1.285780027611597) internal successors, (2794), 2244 states have internal predecessors, (2794), 1010 states have call successors, (1010), 347 states have call predecessors, (1010), 370 states have return successors, (1066), 1011 states have call predecessors, (1066), 1009 states have call successors, (1066) [2022-11-23 16:04:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4870 transitions. [2022-11-23 16:04:31,220 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4870 transitions. Word has length 130 [2022-11-23 16:04:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:31,220 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 4870 transitions. [2022-11-23 16:04:31,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-23 16:04:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4870 transitions. [2022-11-23 16:04:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 16:04:31,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:31,230 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2022-11-23 16:04:31,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 16:04:31,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 16:04:31,440 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1954726189, now seen corresponding path program 1 times [2022-11-23 16:04:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:31,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686538383] [2022-11-23 16:04:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 16:04:31,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686538383] [2022-11-23 16:04:31,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686538383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:31,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:31,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:04:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703458271] [2022-11-23 16:04:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:31,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:04:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:04:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:04:31,785 INFO L87 Difference]: Start difference. First operand 3554 states and 4870 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:04:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:33,177 INFO L93 Difference]: Finished difference Result 6043 states and 8319 transitions. [2022-11-23 16:04:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:04:33,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2022-11-23 16:04:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:33,202 INFO L225 Difference]: With dead ends: 6043 [2022-11-23 16:04:33,202 INFO L226 Difference]: Without dead ends: 3582 [2022-11-23 16:04:33,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:04:33,216 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 10 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:33,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2275 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 16:04:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-11-23 16:04:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3564. [2022-11-23 16:04:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 2183 states have (on average 1.2872194228126432) internal successors, (2810), 2254 states have internal predecessors, (2810), 1010 states have call successors, (1010), 347 states have call predecessors, (1010), 370 states have return successors, (1066), 1011 states have call predecessors, (1066), 1009 states have call successors, (1066) [2022-11-23 16:04:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4886 transitions. [2022-11-23 16:04:33,591 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4886 transitions. Word has length 131 [2022-11-23 16:04:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:33,592 INFO L495 AbstractCegarLoop]: Abstraction has 3564 states and 4886 transitions. [2022-11-23 16:04:33,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:04:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4886 transitions. [2022-11-23 16:04:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 16:04:33,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:33,601 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:33,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:04:33,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1821139788, now seen corresponding path program 1 times [2022-11-23 16:04:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:33,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681890107] [2022-11-23 16:04:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:04:43,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:43,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681890107] [2022-11-23 16:04:43,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681890107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:43,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764001957] [2022-11-23 16:04:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:43,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:43,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:43,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:43,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14e4af8-6323-4f36-bf38-cd5f9656aca8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:04:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:44,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-23 16:04:44,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:46,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 16:04:46,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 16:04:46,987 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-23 16:04:46,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 39 [2022-11-23 16:04:47,001 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-23 16:04:47,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 40 [2022-11-23 16:04:47,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 21 [2022-11-23 16:04:47,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2022-11-23 16:04:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 16:04:47,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 16:04:50,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764001957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:50,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087736893] [2022-11-23 16:04:50,148 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-11-23 16:04:50,148 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:50,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:50,159 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:50,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:50,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 456 treesize of output 370 [2022-11-23 16:04:51,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 376 [2022-11-23 16:04:51,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 16:04:51,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 16:04:51,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 16:04:52,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:52,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 51 select indices, 51 select index equivalence classes, 152 disjoint index pairs (out of 1275 index pairs), introduced 51 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 154 [2022-11-23 16:04:53,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:04:53,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 51 select indices, 51 select index equivalence classes, 152 disjoint index pairs (out of 1275 index pairs), introduced 51 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 154 [2022-11-23 16:04:57,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:04:57,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:04:57,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 16:04:59,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:05:00,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 16:05:00,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:05:03,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 16:05:03,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:05:03,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:05:04,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:05:04,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 16:05:05,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-23 16:05:07,059 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 16:05:07,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-23 16:05:07,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-23 16:05:07,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 16:05:07,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 16:05:07,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-23 16:05:07,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:05:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:07,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:05:07,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 153 [2022-11-23 16:05:07,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:05:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:07,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:07,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:05:07,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 155 treesize of output 181 [2022-11-23 16:05:12,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 16:05:12,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:05:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:12,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:05:12,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-11-23 16:05:12,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 16:05:12,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:05:12,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:12,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:05:13,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2022-11-23 16:05:13,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 16:05:13,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:05:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:13,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:05:13,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 153 [2022-11-23 16:05:13,151 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:05:13,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:13,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:05:13,298 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:05:13,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 155 treesize of output 181 [2022-11-23 16:05:17,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 16:05:18,404 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 52920 conjuctions. This might take some time...