./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.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_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/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_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/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_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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 15:46:24,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:46:24,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:46:24,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:46:24,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:46:24,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:46:24,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:46:24,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:46:24,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:46:24,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:46:24,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:46:24,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:46:24,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:46:24,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:46:24,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:46:24,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:46:24,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:46:24,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:46:24,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:46:24,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:46:24,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:46:24,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:46:24,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:46:24,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:46:24,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:46:24,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:46:24,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:46:24,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:46:24,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:46:24,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:46:24,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:46:24,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:46:24,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:46:24,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:46:24,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:46:24,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:46:24,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:46:24,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:46:24,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:46:24,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:46:24,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:46:24,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:46:24,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:46:24,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:46:24,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:46:24,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:46:24,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:46:24,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:46:24,871 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:46:24,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:46:24,871 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:46:24,872 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:46:24,873 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:46:24,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:46:24,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:46:24,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:46:24,874 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:46:24,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:46:24,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:46:24,875 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:46:24,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:46:24,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:46:24,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:46:24,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:46:24,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:46:24,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:46:24,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:46:24,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:46:24,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:46:24,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:46:24,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:46:24,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:46:24,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:46:24,882 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:46:24,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:46:24,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:46:24,883 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:46:24,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:46:24,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:46:24,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:46:24,884 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_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-11-23 15:46:25,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:46:25,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:46:25,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:46:25,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:46:25,231 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:46:25,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-23 15:46:28,462 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:46:29,065 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:46:29,072 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-23 15:46:29,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/data/8396938e5/bc82f2edc57f45a19e7b4297a959719e/FLAG261e96b21 [2022-11-23 15:46:29,160 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/data/8396938e5/bc82f2edc57f45a19e7b4297a959719e [2022-11-23 15:46:29,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:46:29,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:46:29,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:46:29,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:46:29,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:46:29,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:29" (1/1) ... [2022-11-23 15:46:29,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0abe23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:29, skipping insertion in model container [2022-11-23 15:46:29,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:29" (1/1) ... [2022-11-23 15:46:29,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:46:29,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:46:30,136 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_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-23 15:46:30,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:46:30,901 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:46:31,067 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_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-23 15:46:31,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:46:31,531 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:46:31,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31 WrapperNode [2022-11-23 15:46:31,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:46:31,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:46:31,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:46:31,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:46:31,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:31,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:31,764 INFO L138 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3180 [2022-11-23 15:46:31,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:46:31,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:46:31,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:46:31,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:46:31,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:31,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:31,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:31,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:31,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:32,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:32,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:32,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:32,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:46:32,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:46:32,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:46:32,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:46:32,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (1/1) ... [2022-11-23 15:46:32,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:46:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:32,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:46:32,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:46:32,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-23 15:46:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-23 15:46:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-23 15:46:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-23 15:46:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:46:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-23 15:46:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-23 15:46:32,176 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-23 15:46:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:46:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:46:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:46:32,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:46:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:46:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 15:46:32,178 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 15:46:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 15:46:32,178 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 15:46:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-23 15:46:32,178 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-23 15:46:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:46:32,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:46:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 15:46:32,179 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 15:46:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:46:32,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:46:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:46:32,181 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:46:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-23 15:46:32,182 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-23 15:46:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:46:32,182 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:46:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-23 15:46:32,183 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-23 15:46:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:46:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:46:32,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:46:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:46:32,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:46:32,184 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:46:32,185 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:46:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:46:32,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:46:32,185 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:46:32,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:46:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 15:46:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 15:46:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:46:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-23 15:46:32,186 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-23 15:46:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-23 15:46:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-23 15:46:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-23 15:46:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-23 15:46:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:46:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:46:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:46:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-23 15:46:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-23 15:46:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:46:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:46:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:46:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-23 15:46:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-23 15:46:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-23 15:46:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-23 15:46:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 15:46:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 15:46:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-23 15:46:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-23 15:46:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:46:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 15:46:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 15:46:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 15:46:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 15:46:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 15:46:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 15:46:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-23 15:46:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-23 15:46:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-23 15:46:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-23 15:46:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:46:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-23 15:46:32,196 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-23 15:46:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:46:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-23 15:46:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-23 15:46:32,197 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 15:46:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 15:46:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-23 15:46:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-23 15:46:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:46:32,199 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:46:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 15:46:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 15:46:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-23 15:46:32,200 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-23 15:46:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-23 15:46:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-23 15:46:32,201 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:46:32,201 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:46:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:46:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:46:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:46:32,202 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:46:32,202 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:46:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:46:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:46:32,203 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-23 15:46:32,203 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-23 15:46:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-23 15:46:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-23 15:46:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 15:46:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 15:46:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:46:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 15:46:32,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 15:46:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:46:32,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:46:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-23 15:46:32,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-23 15:46:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-23 15:46:32,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-23 15:46:32,944 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:46:32,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:46:33,245 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:46:36,661 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:46:37,929 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:46:37,929 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:46:37,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:37 BoogieIcfgContainer [2022-11-23 15:46:37,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:46:37,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:46:37,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:46:37,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:46:37,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:46:29" (1/3) ... [2022-11-23 15:46:37,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f159a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:37, skipping insertion in model container [2022-11-23 15:46:37,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:31" (2/3) ... [2022-11-23 15:46:37,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f159a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:37, skipping insertion in model container [2022-11-23 15:46:37,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:37" (3/3) ... [2022-11-23 15:46:37,952 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-23 15:46:37,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:46:37,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:46:38,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:46:38,093 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;@738b3c95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:46:38,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:46:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-23 15:46:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 15:46:38,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:38,173 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:38,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash -480572475, now seen corresponding path program 1 times [2022-11-23 15:46:38,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:38,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787152919] [2022-11-23 15:46:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:38,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 15:46:38,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:38,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787152919] [2022-11-23 15:46:38,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787152919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:38,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:38,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:46:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396228080] [2022-11-23 15:46:38,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:38,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:46:38,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:46:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:46:38,772 INFO L87 Difference]: Start difference. First operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 15:46:40,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:46:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:42,372 INFO L93 Difference]: Finished difference Result 1967 states and 2884 transitions. [2022-11-23 15:46:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:46:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-11-23 15:46:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:42,400 INFO L225 Difference]: With dead ends: 1967 [2022-11-23 15:46:42,400 INFO L226 Difference]: Without dead ends: 1150 [2022-11-23 15:46:42,412 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 15:46:42,415 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 641 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:42,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2085 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 15:46:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-11-23 15:46:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2022-11-23 15:46:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 728 states have (on average 1.3736263736263736) internal successors, (1000), 761 states have internal predecessors, (1000), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-23 15:46:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1665 transitions. [2022-11-23 15:46:42,649 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1665 transitions. Word has length 60 [2022-11-23 15:46:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:42,650 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1665 transitions. [2022-11-23 15:46:42,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 15:46:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1665 transitions. [2022-11-23 15:46:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 15:46:42,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:42,666 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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 15:46:42,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:46:42,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1306594495, now seen corresponding path program 1 times [2022-11-23 15:46:42,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:42,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957571125] [2022-11-23 15:46:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:42,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-23 15:46:43,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:43,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957571125] [2022-11-23 15:46:43,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957571125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:43,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:43,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:46:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547356543] [2022-11-23 15:46:43,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:43,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:46:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:46:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:46:43,084 INFO L87 Difference]: Start difference. First operand 1150 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:46:44,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:46:46,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:46:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:48,183 INFO L93 Difference]: Finished difference Result 2283 states and 3305 transitions. [2022-11-23 15:46:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:46:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-11-23 15:46:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:48,196 INFO L225 Difference]: With dead ends: 2283 [2022-11-23 15:46:48,196 INFO L226 Difference]: Without dead ends: 1150 [2022-11-23 15:46:48,202 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 15:46:48,207 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:48,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2860 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 396 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 15:46:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-11-23 15:46:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2022-11-23 15:46:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 728 states have (on average 1.370879120879121) internal successors, (998), 761 states have internal predecessors, (998), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-23 15:46:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1663 transitions. [2022-11-23 15:46:48,294 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1663 transitions. Word has length 94 [2022-11-23 15:46:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:48,297 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1663 transitions. [2022-11-23 15:46:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:46:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1663 transitions. [2022-11-23 15:46:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 15:46:48,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:48,304 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-23 15:46:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:46:48,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -885451734, now seen corresponding path program 1 times [2022-11-23 15:46:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:48,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806379126] [2022-11-23 15:46:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-23 15:46:48,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806379126] [2022-11-23 15:46:48,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806379126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:48,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:48,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:46:48,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764520420] [2022-11-23 15:46:48,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:48,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:46:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:46:48,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:46:48,739 INFO L87 Difference]: Start difference. First operand 1150 states and 1663 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 15:46:51,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:46:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:53,643 INFO L93 Difference]: Finished difference Result 1627 states and 2443 transitions. [2022-11-23 15:46:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:46:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 96 [2022-11-23 15:46:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:53,655 INFO L225 Difference]: With dead ends: 1627 [2022-11-23 15:46:53,656 INFO L226 Difference]: Without dead ends: 1624 [2022-11-23 15:46:53,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 15:46:53,658 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 607 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 141 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:53,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3643 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 15:46:53,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-11-23 15:46:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1152. [2022-11-23 15:46:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 730 states have (on average 1.36986301369863) internal successors, (1000), 763 states have internal predecessors, (1000), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-23 15:46:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1665 transitions. [2022-11-23 15:46:53,736 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1665 transitions. Word has length 96 [2022-11-23 15:46:53,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:53,736 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1665 transitions. [2022-11-23 15:46:53,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 15:46:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1665 transitions. [2022-11-23 15:46:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 15:46:53,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:53,743 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-23 15:46:53,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:46:53,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:53,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash -496628812, now seen corresponding path program 1 times [2022-11-23 15:46:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:53,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625247219] [2022-11-23 15:46:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-23 15:46:54,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625247219] [2022-11-23 15:46:54,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625247219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:54,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:54,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:46:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352412993] [2022-11-23 15:46:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:54,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:46:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:46:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:46:54,266 INFO L87 Difference]: Start difference. First operand 1152 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:46:55,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:46:57,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:46:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:59,909 INFO L93 Difference]: Finished difference Result 2758 states and 4080 transitions. [2022-11-23 15:46:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:46:59,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-11-23 15:46:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:59,922 INFO L225 Difference]: With dead ends: 2758 [2022-11-23 15:46:59,922 INFO L226 Difference]: Without dead ends: 1627 [2022-11-23 15:46:59,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:46:59,934 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 1570 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:59,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 1757 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 15:46:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-23 15:47:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1153. [2022-11-23 15:47:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 731 states have (on average 1.3693570451436388) internal successors, (1001), 764 states have internal predecessors, (1001), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-23 15:47:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1666 transitions. [2022-11-23 15:47:00,079 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1666 transitions. Word has length 104 [2022-11-23 15:47:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:00,081 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1666 transitions. [2022-11-23 15:47:00,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 15:47:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1666 transitions. [2022-11-23 15:47:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 15:47:00,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:00,093 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-23 15:47:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:47:00,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1193526821, now seen corresponding path program 1 times [2022-11-23 15:47:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:00,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263635581] [2022-11-23 15:47:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-23 15:47:00,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:00,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263635581] [2022-11-23 15:47:00,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263635581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:00,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:00,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:47:00,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237976628] [2022-11-23 15:47:00,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:00,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:47:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:47:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:47:00,480 INFO L87 Difference]: Start difference. First operand 1153 states and 1666 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:47:04,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:47:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:06,850 INFO L93 Difference]: Finished difference Result 2431 states and 3756 transitions. [2022-11-23 15:47:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:47:06,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-23 15:47:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:06,867 INFO L225 Difference]: With dead ends: 2431 [2022-11-23 15:47:06,868 INFO L226 Difference]: Without dead ends: 2428 [2022-11-23 15:47:06,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:47:06,870 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1341 mSDsluCounter, 4198 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 403 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 5964 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:06,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 5964 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 704 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 15:47:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-11-23 15:47:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1155. [2022-11-23 15:47:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 732 states have (on average 1.3688524590163935) internal successors, (1002), 764 states have internal predecessors, (1002), 334 states have call successors, (334), 89 states have call predecessors, (334), 88 states have return successors, (333), 330 states have call predecessors, (333), 333 states have call successors, (333) [2022-11-23 15:47:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1669 transitions. [2022-11-23 15:47:06,992 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1669 transitions. Word has length 105 [2022-11-23 15:47:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:06,994 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1669 transitions. [2022-11-23 15:47:06,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 15:47:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1669 transitions. [2022-11-23 15:47:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-23 15:47:07,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:07,002 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-23 15:47:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:47:07,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:07,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1628684007, now seen corresponding path program 1 times [2022-11-23 15:47:07,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:07,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772762207] [2022-11-23 15:47:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:07,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-23 15:47:07,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772762207] [2022-11-23 15:47:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772762207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:07,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:07,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941009580] [2022-11-23 15:47:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:07,232 INFO L87 Difference]: Start difference. First operand 1155 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:47:10,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:47:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:11,626 INFO L93 Difference]: Finished difference Result 2688 states and 3870 transitions. [2022-11-23 15:47:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-11-23 15:47:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:11,638 INFO L225 Difference]: With dead ends: 2688 [2022-11-23 15:47:11,638 INFO L226 Difference]: Without dead ends: 1554 [2022-11-23 15:47:11,642 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 15:47:11,645 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 1031 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:11,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1961 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 15:47:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-11-23 15:47:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1553. [2022-11-23 15:47:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 979 states have (on average 1.3615934627170583) internal successors, (1333), 1020 states have internal predecessors, (1333), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2022-11-23 15:47:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2228 transitions. [2022-11-23 15:47:11,833 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2228 transitions. Word has length 129 [2022-11-23 15:47:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:11,834 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2228 transitions. [2022-11-23 15:47:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:47:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2228 transitions. [2022-11-23 15:47:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 15:47:11,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:11,844 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-23 15:47:11,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:47:11,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1940388543, now seen corresponding path program 1 times [2022-11-23 15:47:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:11,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753329263] [2022-11-23 15:47:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 15:47:12,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753329263] [2022-11-23 15:47:12,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753329263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:12,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:12,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:47:12,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723570495] [2022-11-23 15:47:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:12,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:47:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:47:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:47:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:47:12,139 INFO L87 Difference]: Start difference. First operand 1553 states and 2228 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:47:15,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:47:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:19,525 INFO L93 Difference]: Finished difference Result 4115 states and 6205 transitions. [2022-11-23 15:47:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:47:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-11-23 15:47:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:19,541 INFO L225 Difference]: With dead ends: 4115 [2022-11-23 15:47:19,541 INFO L226 Difference]: Without dead ends: 2981 [2022-11-23 15:47:19,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:47:19,546 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 2546 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 365 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:19,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 3680 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1630 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 15:47:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-11-23 15:47:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1556. [2022-11-23 15:47:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 982 states have (on average 1.3615071283095723) internal successors, (1337), 1023 states have internal predecessors, (1337), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2022-11-23 15:47:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2232 transitions. [2022-11-23 15:47:19,760 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2232 transitions. Word has length 131 [2022-11-23 15:47:19,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:19,761 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2232 transitions. [2022-11-23 15:47:19,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 15:47:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2232 transitions. [2022-11-23 15:47:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 15:47:19,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:19,769 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-23 15:47:19,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:47:19,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1655505147, now seen corresponding path program 1 times [2022-11-23 15:47:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:47:19,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848951621] [2022-11-23 15:47:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:19,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:47:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 15:47:20,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:47:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848951621] [2022-11-23 15:47:20,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848951621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:47:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552437889] [2022-11-23 15:47:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:20,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:20,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:47:20,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:47:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:20,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:47:20,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-23 15:47:21,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-23 15:47:21,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552437889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:21,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095491270] [2022-11-23 15:47:21,512 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-23 15:47:21,512 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:47:21,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:47:21,523 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:47:21,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:47:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:47:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:47:22,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:47:22,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-23 15:47:23,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:47:23,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:47:23,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:47:23,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-23 15:47:38,905 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 423 for LOIs [2022-11-23 15:47:39,798 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 136 for LOIs [2022-11-23 15:47:39,880 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 423 for LOIs [2022-11-23 15:47:40,026 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:49:46,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1095491270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:46,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:49:46,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [5, 4, 5] total 47 [2022-11-23 15:49:46,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500942469] [2022-11-23 15:49:46,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:46,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-23 15:49:46,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-23 15:49:46,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 15:49:46,684 INFO L87 Difference]: Start difference. First operand 1556 states and 2232 transitions. Second operand has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-23 15:49:52,376 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 624 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:49:58,086 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 632 DAG size of output: 617 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:50:04,072 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 638 DAG size of output: 623 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:51:13,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:16,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:18,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:19,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:21,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:23,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:27,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:29,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:31,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:03,715 INFO L93 Difference]: Finished difference Result 3179 states and 4585 transitions. [2022-11-23 15:52:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-23 15:52:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 133 [2022-11-23 15:52:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:03,726 INFO L225 Difference]: With dead ends: 3179 [2022-11-23 15:52:03,726 INFO L226 Difference]: Without dead ends: 1638 [2022-11-23 15:52:03,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 189.4s TimeCoverageRelationStatistics Valid=453, Invalid=3707, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 15:52:03,733 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 91 mSDsluCounter, 12680 mSDsCounter, 0 mSdLazyCounter, 8296 mSolverCounterSat, 181 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 13638 SdHoareTripleChecker+Invalid, 8482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 8296 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:03,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 13638 Invalid, 8482 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [181 Valid, 8296 Invalid, 5 Unknown, 0 Unchecked, 73.5s Time] [2022-11-23 15:52:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2022-11-23 15:52:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1597. [2022-11-23 15:52:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1013 states have (on average 1.3573543928923988) internal successors, (1375), 1054 states have internal predecessors, (1375), 456 states have call successors, (456), 129 states have call predecessors, (456), 127 states have return successors, (468), 449 states have call predecessors, (468), 455 states have call successors, (468) [2022-11-23 15:52:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2299 transitions. [2022-11-23 15:52:04,056 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2299 transitions. Word has length 133 [2022-11-23 15:52:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:04,057 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2299 transitions. [2022-11-23 15:52:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-23 15:52:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2299 transitions. [2022-11-23 15:52:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-23 15:52:04,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:04,065 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 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] [2022-11-23 15:52:04,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:52:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:04,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:52:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1572142981, now seen corresponding path program 1 times [2022-11-23 15:52:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:04,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583627680] [2022-11-23 15:52:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 15:52:04,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583627680] [2022-11-23 15:52:04,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583627680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:52:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343026924] [2022-11-23 15:52:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:04,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:52:04,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:52:04,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:52:04,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a675e42c-7b03-4e93-9c88-1f6ffe4fd8a5/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:52:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:05,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:52:05,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:52:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-23 15:52:05,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:52:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-23 15:52:05,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343026924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:52:05,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [993815630] [2022-11-23 15:52:05,803 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2022-11-23 15:52:05,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:52:05,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:52:05,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:52:05,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:52:06,313 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 15:52:06,320 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 15:52:06,327 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 15:52:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:06,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:06,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:06,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-23 15:52:07,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:07,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:07,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:07,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-23 15:52:09,537 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 15:52:09,568 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 15:52:09,642 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 15:52:11,218 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 15:52:11,330 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 15:52:11,377 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 15:52:13,244 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 15:52:13,265 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 15:52:13,292 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 15:52:14,031 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 15:52:14,107 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 15:52:14,134 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 15:52:17,527 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 15:52:17,566 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 15:52:18,276 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 15:52:18,297 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 15:52:22,184 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 15:52:22,209 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 15:52:22,929 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 15:52:22,954 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 15:52:25,297 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 167 for LOIs [2022-11-23 15:52:26,206 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 677 for LOIs [2022-11-23 15:52:27,388 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 15:52:27,958 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 15:52:28,086 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 15:52:30,048 INFO L321 Elim1Store]: treesize reduction 324, result has 43.0 percent of original size [2022-11-23 15:52:30,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 28 new quantified variables, introduced 27 case distinctions, treesize of input 1549 treesize of output 1741 [2022-11-23 15:52:30,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:30,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:30,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:52:30,431 INFO L321 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2022-11-23 15:52:30,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1510 treesize of output 1517 [2022-11-23 15:52:32,489 INFO L321 Elim1Store]: treesize reduction 270, result has 63.0 percent of original size [2022-11-23 15:52:32,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 29 select indices, 29 select index equivalence classes, 379 disjoint index pairs (out of 406 index pairs), introduced 30 new quantified variables, introduced 54 case distinctions, treesize of input 1474 treesize of output 1883