./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:33:27,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:33:27,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:33:27,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:33:27,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:33:27,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:33:27,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:33:27,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:33:27,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:33:27,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:33:27,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:33:27,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:33:27,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:33:27,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:33:27,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:33:27,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:33:27,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:33:27,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:33:27,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:33:27,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:33:27,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:33:27,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:33:27,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:33:27,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:33:27,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:33:27,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:33:27,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:33:27,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:33:27,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:33:27,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:33:27,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:33:27,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:33:27,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:33:27,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:33:27,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:33:27,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:33:27,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:33:27,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:33:27,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:33:27,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:33:27,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:33:27,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:33:27,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:33:27,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:33:27,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:33:27,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:33:27,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:33:27,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:33:27,915 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:33:27,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:33:27,915 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:33:27,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:33:27,915 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:33:27,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:33:27,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:33:27,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:33:27,916 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:33:27,916 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:33:27,916 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:33:27,917 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:33:27,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:33:27,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:33:27,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:33:27,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:33:27,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:33:27,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:33:27,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:33:27,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:33:27,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:33:27,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:33:27,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:33:27,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:27,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:33:27,920 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:33:27,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:33:27,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:33:27,920 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:33:27,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:33:27,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:33:27,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:33:27,921 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_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 [2022-11-03 03:33:28,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:33:28,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:33:28,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:33:28,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:33:28,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:33:28,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 03:33:28,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/17722da81/58dd3e652c5f4e71b0f488cf5189a269/FLAGd272472a7 [2022-11-03 03:33:29,308 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:33:29,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 03:33:29,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/17722da81/58dd3e652c5f4e71b0f488cf5189a269/FLAGd272472a7 [2022-11-03 03:33:29,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/17722da81/58dd3e652c5f4e71b0f488cf5189a269 [2022-11-03 03:33:29,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:33:29,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:33:29,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:29,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:33:29,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:33:29,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:29" (1/1) ... [2022-11-03 03:33:29,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe9582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:29, skipping insertion in model container [2022-11-03 03:33:29,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:33:29" (1/1) ... [2022-11-03 03:33:29,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:33:29,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:33:31,627 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2022-11-03 03:33:31,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:31,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:33:32,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2022-11-03 03:33:32,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:33:32,207 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:33:32,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32 WrapperNode [2022-11-03 03:33:32,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:33:32,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:32,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:33:32,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:33:32,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,613 INFO L138 Inliner]: procedures = 260, calls = 1808, calls flagged for inlining = 104, calls inlined = 100, statements flattened = 4518 [2022-11-03 03:33:32,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:33:32,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:33:32,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:33:32,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:33:32,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:32,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:33,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:33,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:33:33,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:33:33,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:33:33,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:33:33,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (1/1) ... [2022-11-03 03:33:33,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:33:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:33:33,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:33:33,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:33:33,139 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:33:33,139 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:33:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:33:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:33:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:33:33,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:33:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:33:33,140 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:33:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2022-11-03 03:33:33,141 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2022-11-03 03:33:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_11 [2022-11-03 03:33:33,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_11 [2022-11-03 03:33:33,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2022-11-03 03:33:33,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2022-11-03 03:33:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2022-11-03 03:33:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2022-11-03 03:33:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 03:33:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 03:33:33,142 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-03 03:33:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-03 03:33:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:33:33,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:33:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 03:33:33,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 03:33:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 03:33:33,143 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 03:33:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2022-11-03 03:33:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2022-11-03 03:33:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:33:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:33:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:33:33,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:33:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:33:33,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:33:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_49 [2022-11-03 03:33:33,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_49 [2022-11-03 03:33:33,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:33:33,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:33:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2022-11-03 03:33:33,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2022-11-03 03:33:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 03:33:33,146 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 03:33:33,146 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2022-11-03 03:33:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2022-11-03 03:33:33,147 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:33:33,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 03:33:33,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2022-11-03 03:33:33,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2022-11-03 03:33:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2022-11-03 03:33:33,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2022-11-03 03:33:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_26 [2022-11-03 03:33:33,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_26 [2022-11-03 03:33:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:33:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2022-11-03 03:33:33,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2022-11-03 03:33:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:33:33,151 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:33:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 03:33:33,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 03:33:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:33:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2022-11-03 03:33:33,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2022-11-03 03:33:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:33:33,153 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:33:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2022-11-03 03:33:33,154 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2022-11-03 03:33:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2022-11-03 03:33:33,154 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2022-11-03 03:33:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-11-03 03:33:33,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-11-03 03:33:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-03 03:33:33,154 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-03 03:33:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:33:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:33:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 03:33:33,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 03:33:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:33:33,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:33:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2022-11-03 03:33:33,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2022-11-03 03:33:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:33:33,157 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:33:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:33:33,158 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:33:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2022-11-03 03:33:33,158 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2022-11-03 03:33:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 03:33:33,159 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 03:33:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2022-11-03 03:33:33,160 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2022-11-03 03:33:33,160 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2022-11-03 03:33:33,160 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2022-11-03 03:33:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 03:33:33,161 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 03:33:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 03:33:33,161 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 03:33:33,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:33:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2022-11-03 03:33:33,162 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2022-11-03 03:33:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:33:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2022-11-03 03:33:33,162 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2022-11-03 03:33:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 03:33:33,163 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 03:33:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:33:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_6 [2022-11-03 03:33:33,163 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_6 [2022-11-03 03:33:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 03:33:33,164 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 03:33:33,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:33:33,165 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:33:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:33:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:33:33,168 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2022-11-03 03:33:33,168 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2022-11-03 03:33:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:33:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:33:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:33:33,171 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:33:33,171 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 03:33:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 03:33:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:33:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2022-11-03 03:33:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2022-11-03 03:33:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2022-11-03 03:33:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2022-11-03 03:33:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2022-11-03 03:33:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2022-11-03 03:33:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:33:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:33:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2022-11-03 03:33:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2022-11-03 03:33:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:33:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:33:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:33:33,185 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_6 [2022-11-03 03:33:33,185 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_6 [2022-11-03 03:33:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2022-11-03 03:33:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2022-11-03 03:33:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:33:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:33:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 03:33:33,186 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 03:33:33,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2022-11-03 03:33:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2022-11-03 03:33:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:33:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2022-11-03 03:33:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2022-11-03 03:33:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_6 [2022-11-03 03:33:33,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_6 [2022-11-03 03:33:33,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_8 [2022-11-03 03:33:33,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_8 [2022-11-03 03:33:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:33:33,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:33:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:33:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2022-11-03 03:33:33,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2022-11-03 03:33:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:33:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:33:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2022-11-03 03:33:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2022-11-03 03:33:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2022-11-03 03:33:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2022-11-03 03:33:33,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 03:33:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 03:33:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:33:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:33:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 03:33:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 03:33:33,190 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2022-11-03 03:33:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2022-11-03 03:33:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-03 03:33:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-03 03:33:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2022-11-03 03:33:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2022-11-03 03:33:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2022-11-03 03:33:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2022-11-03 03:33:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:33:33,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:33:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 03:33:33,194 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 03:33:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2022-11-03 03:33:33,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2022-11-03 03:33:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-11-03 03:33:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-11-03 03:33:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-03 03:33:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-03 03:33:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_46 [2022-11-03 03:33:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_46 [2022-11-03 03:33:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 03:33:33,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 03:33:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:33:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-03 03:33:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-03 03:33:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2022-11-03 03:33:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2022-11-03 03:33:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 03:33:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 03:33:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2022-11-03 03:33:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2022-11-03 03:33:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2022-11-03 03:33:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2022-11-03 03:33:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 03:33:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:33:33,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:33:34,106 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:33:34,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:33:35,745 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:33:40,379 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:33:43,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:33:43,271 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:33:43,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:43 BoogieIcfgContainer [2022-11-03 03:33:43,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:33:43,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:33:43,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:33:43,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:33:43,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:33:29" (1/3) ... [2022-11-03 03:33:43,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbc60f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:43, skipping insertion in model container [2022-11-03 03:33:43,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:33:32" (2/3) ... [2022-11-03 03:33:43,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbc60f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:33:43, skipping insertion in model container [2022-11-03 03:33:43,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:33:43" (3/3) ... [2022-11-03 03:33:43,285 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 03:33:43,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:33:43,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:33:43,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:33:43,382 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;@1f892bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:33:43,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:33:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 1227 states, 748 states have (on average 1.391711229946524) internal successors, (1041), 814 states have internal predecessors, (1041), 384 states have call successors, (384), 94 states have call predecessors, (384), 93 states have return successors, (375), 349 states have call predecessors, (375), 375 states have call successors, (375) [2022-11-03 03:33:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 03:33:43,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:43,412 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:43,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1972668509, now seen corresponding path program 1 times [2022-11-03 03:33:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:43,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580409336] [2022-11-03 03:33:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 03:33:44,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:44,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580409336] [2022-11-03 03:33:44,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580409336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:44,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:44,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360462282] [2022-11-03 03:33:44,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:44,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:44,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:44,147 INFO L87 Difference]: Start difference. First operand has 1227 states, 748 states have (on average 1.391711229946524) internal successors, (1041), 814 states have internal predecessors, (1041), 384 states have call successors, (384), 94 states have call predecessors, (384), 93 states have return successors, (375), 349 states have call predecessors, (375), 375 states have call successors, (375) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:33:46,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:50,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:50,660 INFO L93 Difference]: Finished difference Result 2275 states and 3372 transitions. [2022-11-03 03:33:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:50,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2022-11-03 03:33:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:50,692 INFO L225 Difference]: With dead ends: 2275 [2022-11-03 03:33:50,693 INFO L226 Difference]: Without dead ends: 2241 [2022-11-03 03:33:50,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:50,701 INFO L413 NwaCegarLoop]: 2043 mSDtfsCounter, 1521 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:50,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 3669 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 03:33:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-11-03 03:33:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2231. [2022-11-03 03:33:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 1380 states have (on average 1.3905797101449275) internal successors, (1919), 1488 states have internal predecessors, (1919), 678 states have call successors, (678), 174 states have call predecessors, (678), 172 states have return successors, (699), 618 states have call predecessors, (699), 674 states have call successors, (699) [2022-11-03 03:33:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3296 transitions. [2022-11-03 03:33:51,034 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3296 transitions. Word has length 89 [2022-11-03 03:33:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:51,036 INFO L495 AbstractCegarLoop]: Abstraction has 2231 states and 3296 transitions. [2022-11-03 03:33:51,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:33:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3296 transitions. [2022-11-03 03:33:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 03:33:51,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:51,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:51,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:33:51,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1023730747, now seen corresponding path program 1 times [2022-11-03 03:33:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:51,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746630690] [2022-11-03 03:33:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 03:33:51,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746630690] [2022-11-03 03:33:51,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746630690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:51,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:51,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:51,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344596024] [2022-11-03 03:33:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:51,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:51,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:51,311 INFO L87 Difference]: Start difference. First operand 2231 states and 3296 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:33:53,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:33:56,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:58,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:58,933 INFO L93 Difference]: Finished difference Result 3306 states and 4923 transitions. [2022-11-03 03:33:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:33:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-11-03 03:33:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:58,969 INFO L225 Difference]: With dead ends: 3306 [2022-11-03 03:33:58,970 INFO L226 Difference]: Without dead ends: 3303 [2022-11-03 03:33:58,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:58,977 INFO L413 NwaCegarLoop]: 2029 mSDtfsCounter, 1547 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:58,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 3639 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 03:33:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2022-11-03 03:33:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 3297. [2022-11-03 03:33:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 2045 states have (on average 1.3926650366748166) internal successors, (2848), 2202 states have internal predecessors, (2848), 994 states have call successors, (994), 259 states have call predecessors, (994), 257 states have return successors, (1072), 909 states have call predecessors, (1072), 990 states have call successors, (1072) [2022-11-03 03:33:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 4914 transitions. [2022-11-03 03:33:59,215 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 4914 transitions. Word has length 90 [2022-11-03 03:33:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:59,216 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 4914 transitions. [2022-11-03 03:33:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:33:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 4914 transitions. [2022-11-03 03:33:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 03:33:59,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:59,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:59,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:33:59,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:33:59,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:59,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1671426330, now seen corresponding path program 1 times [2022-11-03 03:33:59,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:59,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479505556] [2022-11-03 03:33:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:59,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 03:33:59,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:59,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479505556] [2022-11-03 03:33:59,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479505556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:59,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:59,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:33:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154095829] [2022-11-03 03:33:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:33:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:33:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:33:59,606 INFO L87 Difference]: Start difference. First operand 3297 states and 4914 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:01,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:34:04,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:06,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:07,674 INFO L93 Difference]: Finished difference Result 4393 states and 6521 transitions. [2022-11-03 03:34:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:07,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-11-03 03:34:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:07,708 INFO L225 Difference]: With dead ends: 4393 [2022-11-03 03:34:07,708 INFO L226 Difference]: Without dead ends: 4390 [2022-11-03 03:34:07,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:07,717 INFO L413 NwaCegarLoop]: 2031 mSDtfsCounter, 1592 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 3614 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 03:34:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-11-03 03:34:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4383. [2022-11-03 03:34:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 2722 states have (on average 1.393093313739897) internal successors, (3792), 2928 states have internal predecessors, (3792), 1320 states have call successors, (1320), 342 states have call predecessors, (1320), 340 states have return successors, (1399), 1210 states have call predecessors, (1399), 1316 states have call successors, (1399) [2022-11-03 03:34:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6511 transitions. [2022-11-03 03:34:07,946 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6511 transitions. Word has length 91 [2022-11-03 03:34:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:07,946 INFO L495 AbstractCegarLoop]: Abstraction has 4383 states and 6511 transitions. [2022-11-03 03:34:07,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6511 transitions. [2022-11-03 03:34:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 03:34:07,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:07,950 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:07,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:34:07,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -275148056, now seen corresponding path program 1 times [2022-11-03 03:34:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159893146] [2022-11-03 03:34:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 03:34:08,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:08,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159893146] [2022-11-03 03:34:08,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159893146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:08,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:08,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561245618] [2022-11-03 03:34:08,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:08,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:08,140 INFO L87 Difference]: Start difference. First operand 4383 states and 6511 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:10,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:34:12,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:15,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:16,040 INFO L93 Difference]: Finished difference Result 4394 states and 6521 transitions. [2022-11-03 03:34:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:16,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-11-03 03:34:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:16,070 INFO L225 Difference]: With dead ends: 4394 [2022-11-03 03:34:16,070 INFO L226 Difference]: Without dead ends: 4366 [2022-11-03 03:34:16,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:16,082 INFO L413 NwaCegarLoop]: 2032 mSDtfsCounter, 1589 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:16,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 3618 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 337 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 03:34:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2022-11-03 03:34:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4359. [2022-11-03 03:34:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 2711 states have (on average 1.3932128365916636) internal successors, (3777), 2917 states have internal predecessors, (3777), 1308 states have call successors, (1308), 341 states have call predecessors, (1308), 339 states have return successors, (1387), 1198 states have call predecessors, (1387), 1304 states have call successors, (1387) [2022-11-03 03:34:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6472 transitions. [2022-11-03 03:34:16,413 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6472 transitions. Word has length 92 [2022-11-03 03:34:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:16,414 INFO L495 AbstractCegarLoop]: Abstraction has 4359 states and 6472 transitions. [2022-11-03 03:34:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 03:34:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6472 transitions. [2022-11-03 03:34:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-03 03:34:16,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:16,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:16,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:34:16,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1901624288, now seen corresponding path program 1 times [2022-11-03 03:34:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:16,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042356195] [2022-11-03 03:34:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 03:34:16,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:16,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042356195] [2022-11-03 03:34:16,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042356195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:16,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:16,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321622669] [2022-11-03 03:34:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:16,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:16,696 INFO L87 Difference]: Start difference. First operand 4359 states and 6472 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:34:19,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:34:23,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:24,389 INFO L93 Difference]: Finished difference Result 12683 states and 18824 transitions. [2022-11-03 03:34:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2022-11-03 03:34:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:24,446 INFO L225 Difference]: With dead ends: 12683 [2022-11-03 03:34:24,446 INFO L226 Difference]: Without dead ends: 8341 [2022-11-03 03:34:24,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:24,479 INFO L413 NwaCegarLoop]: 2079 mSDtfsCounter, 1526 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:24,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 3623 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 03:34:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-11-03 03:34:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 8322. [2022-11-03 03:34:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 5192 states have (on average 1.3958012326656395) internal successors, (7247), 5597 states have internal predecessors, (7247), 2469 states have call successors, (2469), 663 states have call predecessors, (2469), 660 states have return successors, (2632), 2255 states have call predecessors, (2632), 2465 states have call successors, (2632) [2022-11-03 03:34:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 12348 transitions. [2022-11-03 03:34:25,069 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 12348 transitions. Word has length 132 [2022-11-03 03:34:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:25,071 INFO L495 AbstractCegarLoop]: Abstraction has 8322 states and 12348 transitions. [2022-11-03 03:34:25,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:34:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 12348 transitions. [2022-11-03 03:34:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 03:34:25,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:25,091 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:25,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:34:25,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1421666159, now seen corresponding path program 1 times [2022-11-03 03:34:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:25,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552472182] [2022-11-03 03:34:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:25,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-03 03:34:25,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552472182] [2022-11-03 03:34:25,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552472182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:25,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:25,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:34:25,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895749846] [2022-11-03 03:34:25,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:25,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:34:25,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:25,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:34:25,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:34:25,489 INFO L87 Difference]: Start difference. First operand 8322 states and 12348 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:34:28,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:34:33,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:34,838 INFO L93 Difference]: Finished difference Result 20504 states and 30757 transitions. [2022-11-03 03:34:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:34:34,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2022-11-03 03:34:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:34,933 INFO L225 Difference]: With dead ends: 20504 [2022-11-03 03:34:34,933 INFO L226 Difference]: Without dead ends: 12199 [2022-11-03 03:34:34,987 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 [2022-11-03 03:34:34,989 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2035 mSDsluCounter, 4047 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 104 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 6049 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:34,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 6049 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 631 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 03:34:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2022-11-03 03:34:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 10397. [2022-11-03 03:34:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10397 states, 6489 states have (on average 1.3952843273231623) internal successors, (9054), 6995 states have internal predecessors, (9054), 3085 states have call successors, (3085), 825 states have call predecessors, (3085), 822 states have return successors, (3250), 2818 states have call predecessors, (3250), 3081 states have call successors, (3250) [2022-11-03 03:34:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10397 states to 10397 states and 15389 transitions. [2022-11-03 03:34:35,765 INFO L78 Accepts]: Start accepts. Automaton has 10397 states and 15389 transitions. Word has length 164 [2022-11-03 03:34:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:35,765 INFO L495 AbstractCegarLoop]: Abstraction has 10397 states and 15389 transitions. [2022-11-03 03:34:35,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:34:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10397 states and 15389 transitions. [2022-11-03 03:34:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-03 03:34:35,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:35,791 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:35,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:34:35,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash 81508301, now seen corresponding path program 1 times [2022-11-03 03:34:35,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:35,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27453658] [2022-11-03 03:34:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 03:34:36,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27453658] [2022-11-03 03:34:36,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27453658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:36,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:36,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37399378] [2022-11-03 03:34:36,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:36,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:36,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:36,195 INFO L87 Difference]: Start difference. First operand 10397 states and 15389 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:34:39,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:34:44,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:45,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:45,187 INFO L93 Difference]: Finished difference Result 28690 states and 42476 transitions. [2022-11-03 03:34:45,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:34:45,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2022-11-03 03:34:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:45,282 INFO L225 Difference]: With dead ends: 28690 [2022-11-03 03:34:45,283 INFO L226 Difference]: Without dead ends: 18310 [2022-11-03 03:34:45,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:45,337 INFO L413 NwaCegarLoop]: 2848 mSDtfsCounter, 1521 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4416 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:45,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 4416 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 448 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 03:34:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18310 states. [2022-11-03 03:34:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18310 to 18307. [2022-11-03 03:34:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18307 states, 11439 states have (on average 1.3951394352653204) internal successors, (15959), 12331 states have internal predecessors, (15959), 5399 states have call successors, (5399), 1473 states have call predecessors, (5399), 1468 states have return successors, (5732), 4922 states have call predecessors, (5732), 5395 states have call successors, (5732) [2022-11-03 03:34:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18307 states to 18307 states and 27090 transitions. [2022-11-03 03:34:46,420 INFO L78 Accepts]: Start accepts. Automaton has 18307 states and 27090 transitions. Word has length 176 [2022-11-03 03:34:46,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:46,421 INFO L495 AbstractCegarLoop]: Abstraction has 18307 states and 27090 transitions. [2022-11-03 03:34:46,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:34:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 18307 states and 27090 transitions. [2022-11-03 03:34:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-03 03:34:46,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:46,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:46,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:34:46,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:34:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash 756620399, now seen corresponding path program 1 times [2022-11-03 03:34:46,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:46,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323715025] [2022-11-03 03:34:46,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:46,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:48,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:48,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323715025] [2022-11-03 03:34:48,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:34:48,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94379698] [2022-11-03 03:34:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:48,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:34:48,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:34:48,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:34:48,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:34:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:56,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 25914 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:34:56,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:34:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 03:34:57,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:34:57,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94379698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:57,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:57,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:34:57,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844845804] [2022-11-03 03:34:57,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:57,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:34:57,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:34:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:34:57,016 INFO L87 Difference]: Start difference. First operand 18307 states and 27090 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:34:59,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:35:01,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:04,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:05,491 INFO L93 Difference]: Finished difference Result 36572 states and 54108 transitions. [2022-11-03 03:35:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 209 [2022-11-03 03:35:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:05,588 INFO L225 Difference]: With dead ends: 36572 [2022-11-03 03:35:05,588 INFO L226 Difference]: Without dead ends: 18290 [2022-11-03 03:35:05,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:05,680 INFO L413 NwaCegarLoop]: 2027 mSDtfsCounter, 1608 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:05,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3611 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 03:35:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18290 states. [2022-11-03 03:35:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18290 to 18283. [2022-11-03 03:35:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18283 states, 11427 states have (on average 1.3945042443335958) internal successors, (15935), 12319 states have internal predecessors, (15935), 5387 states have call successors, (5387), 1473 states have call predecessors, (5387), 1468 states have return successors, (5708), 4910 states have call predecessors, (5708), 5383 states have call successors, (5708) [2022-11-03 03:35:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18283 states to 18283 states and 27030 transitions. [2022-11-03 03:35:07,266 INFO L78 Accepts]: Start accepts. Automaton has 18283 states and 27030 transitions. Word has length 209 [2022-11-03 03:35:07,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:07,266 INFO L495 AbstractCegarLoop]: Abstraction has 18283 states and 27030 transitions. [2022-11-03 03:35:07,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:35:07,267 INFO L276 IsEmpty]: Start isEmpty. Operand 18283 states and 27030 transitions. [2022-11-03 03:35:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 03:35:07,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:07,314 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:07,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:07,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:07,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2075936675, now seen corresponding path program 1 times [2022-11-03 03:35:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442198107] [2022-11-03 03:35:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:09,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:09,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442198107] [2022-11-03 03:35:09,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:35:09,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267816663] [2022-11-03 03:35:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:09,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:09,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:09,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:35:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:19,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 25916 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:35:19,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 03:35:19,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:35:19,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267816663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:19,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:19,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957001917] [2022-11-03 03:35:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:19,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:19,283 INFO L87 Difference]: Start difference. First operand 18283 states and 27030 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:35:21,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:35:24,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:26,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:28,282 INFO L93 Difference]: Finished difference Result 36524 states and 53988 transitions. [2022-11-03 03:35:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 210 [2022-11-03 03:35:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:28,401 INFO L225 Difference]: With dead ends: 36524 [2022-11-03 03:35:28,401 INFO L226 Difference]: Without dead ends: 18266 [2022-11-03 03:35:28,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:28,499 INFO L413 NwaCegarLoop]: 2026 mSDtfsCounter, 1603 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:28,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 3610 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 03:35:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18266 states. [2022-11-03 03:35:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18266 to 18259. [2022-11-03 03:35:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18259 states, 11415 states have (on average 1.393867717915024) internal successors, (15911), 12307 states have internal predecessors, (15911), 5375 states have call successors, (5375), 1473 states have call predecessors, (5375), 1468 states have return successors, (5684), 4898 states have call predecessors, (5684), 5371 states have call successors, (5684) [2022-11-03 03:35:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18259 states to 18259 states and 26970 transitions. [2022-11-03 03:35:29,796 INFO L78 Accepts]: Start accepts. Automaton has 18259 states and 26970 transitions. Word has length 210 [2022-11-03 03:35:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:29,796 INFO L495 AbstractCegarLoop]: Abstraction has 18259 states and 26970 transitions. [2022-11-03 03:35:29,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:35:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 18259 states and 26970 transitions. [2022-11-03 03:35:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-03 03:35:29,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:29,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:30,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:30,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:30,172 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash -31857630, now seen corresponding path program 1 times [2022-11-03 03:35:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:30,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146853060] [2022-11-03 03:35:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:30,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:32,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:32,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146853060] [2022-11-03 03:35:32,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:35:32,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990465525] [2022-11-03 03:35:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:32,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:32,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:32,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:35:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:43,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 25912 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:35:43,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:35:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 03:35:43,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:35:43,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990465525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:35:43,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:35:43,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:35:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783656806] [2022-11-03 03:35:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:35:43,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:35:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:35:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:35:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:43,293 INFO L87 Difference]: Start difference. First operand 18259 states and 26970 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:35:45,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:35:48,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:50,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:35:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:35:52,139 INFO L93 Difference]: Finished difference Result 36476 states and 53868 transitions. [2022-11-03 03:35:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:35:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 208 [2022-11-03 03:35:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:35:52,206 INFO L225 Difference]: With dead ends: 36476 [2022-11-03 03:35:52,206 INFO L226 Difference]: Without dead ends: 18242 [2022-11-03 03:35:52,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:35:52,266 INFO L413 NwaCegarLoop]: 2025 mSDtfsCounter, 1601 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:35:52,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 3609 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 03:35:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2022-11-03 03:35:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 18235. [2022-11-03 03:35:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18235 states, 11403 states have (on average 1.3932298517933877) internal successors, (15887), 12295 states have internal predecessors, (15887), 5363 states have call successors, (5363), 1473 states have call predecessors, (5363), 1468 states have return successors, (5660), 4886 states have call predecessors, (5660), 5359 states have call successors, (5660) [2022-11-03 03:35:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18235 states to 18235 states and 26910 transitions. [2022-11-03 03:35:53,634 INFO L78 Accepts]: Start accepts. Automaton has 18235 states and 26910 transitions. Word has length 208 [2022-11-03 03:35:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:35:53,634 INFO L495 AbstractCegarLoop]: Abstraction has 18235 states and 26910 transitions. [2022-11-03 03:35:53,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:35:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18235 states and 26910 transitions. [2022-11-03 03:35:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-03 03:35:53,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:35:53,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:35:53,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:35:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:35:53,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:35:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:35:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1623597872, now seen corresponding path program 1 times [2022-11-03 03:35:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:35:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019598061] [2022-11-03 03:35:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:35:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:35:55,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:35:55,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019598061] [2022-11-03 03:35:55,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 03:35:55,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591083436] [2022-11-03 03:35:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:35:55,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:35:55,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:35:55,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:35:56,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:36:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:09,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 25918 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:36:09,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-03 03:36:09,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:36:09,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591083436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:09,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:09,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149746066] [2022-11-03 03:36:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:09,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:09,885 INFO L87 Difference]: Start difference. First operand 18235 states and 26910 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:36:12,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:14,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:36:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:18,753 INFO L93 Difference]: Finished difference Result 36428 states and 53748 transitions. [2022-11-03 03:36:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:18,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 211 [2022-11-03 03:36:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:18,814 INFO L225 Difference]: With dead ends: 36428 [2022-11-03 03:36:18,814 INFO L226 Difference]: Without dead ends: 18218 [2022-11-03 03:36:18,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:18,861 INFO L413 NwaCegarLoop]: 2293 mSDtfsCounter, 1594 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 3877 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:18,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 3877 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 03:36:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18218 states. [2022-11-03 03:36:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18218 to 18211. [2022-11-03 03:36:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 11391 states have (on average 1.392590641734703) internal successors, (15863), 12283 states have internal predecessors, (15863), 5351 states have call successors, (5351), 1473 states have call predecessors, (5351), 1468 states have return successors, (5636), 4874 states have call predecessors, (5636), 5347 states have call successors, (5636) [2022-11-03 03:36:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 26850 transitions. [2022-11-03 03:36:20,220 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 26850 transitions. Word has length 211 [2022-11-03 03:36:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:20,221 INFO L495 AbstractCegarLoop]: Abstraction has 18211 states and 26850 transitions. [2022-11-03 03:36:20,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:36:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 26850 transitions. [2022-11-03 03:36:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-03 03:36:20,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:20,234 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:20,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:36:20,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:20,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1658687212, now seen corresponding path program 1 times [2022-11-03 03:36:20,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:20,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664144497] [2022-11-03 03:36:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:20,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-03 03:36:20,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:20,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664144497] [2022-11-03 03:36:20,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664144497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:20,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:20,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593019197] [2022-11-03 03:36:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:20,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:20,952 INFO L87 Difference]: Start difference. First operand 18211 states and 26850 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:36:23,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:26,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:36:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:28,035 INFO L93 Difference]: Finished difference Result 31706 states and 46636 transitions. [2022-11-03 03:36:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 203 [2022-11-03 03:36:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:28,083 INFO L225 Difference]: With dead ends: 31706 [2022-11-03 03:36:28,084 INFO L226 Difference]: Without dead ends: 13518 [2022-11-03 03:36:28,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:28,225 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 14 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:28,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3206 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 03:36:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13518 states. [2022-11-03 03:36:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13518 to 13497. [2022-11-03 03:36:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 8404 states have (on average 1.385411708710138) internal successors, (11643), 9066 states have internal predecessors, (11643), 3964 states have call successors, (3964), 1132 states have call predecessors, (3964), 1128 states have return successors, (4176), 3616 states have call predecessors, (4176), 3960 states have call successors, (4176) [2022-11-03 03:36:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 19783 transitions. [2022-11-03 03:36:29,102 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 19783 transitions. Word has length 203 [2022-11-03 03:36:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:29,102 INFO L495 AbstractCegarLoop]: Abstraction has 13497 states and 19783 transitions. [2022-11-03 03:36:29,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 03:36:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 19783 transitions. [2022-11-03 03:36:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-03 03:36:29,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:29,121 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:29,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:36:29,122 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:29,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:29,123 INFO L85 PathProgramCache]: Analyzing trace with hash 283314904, now seen corresponding path program 1 times [2022-11-03 03:36:29,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:29,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676917256] [2022-11-03 03:36:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:29,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-03 03:36:30,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:30,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676917256] [2022-11-03 03:36:30,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676917256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:30,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:36:30,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:36:30,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165975550] [2022-11-03 03:36:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:30,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:36:30,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:36:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:30,163 INFO L87 Difference]: Start difference. First operand 13497 states and 19783 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:36:33,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:36,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:36:38,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:36:38,667 INFO L93 Difference]: Finished difference Result 16417 states and 23995 transitions. [2022-11-03 03:36:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:36:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 234 [2022-11-03 03:36:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:36:38,708 INFO L225 Difference]: With dead ends: 16417 [2022-11-03 03:36:38,709 INFO L226 Difference]: Without dead ends: 12101 [2022-11-03 03:36:38,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:36:38,721 INFO L413 NwaCegarLoop]: 2522 mSDtfsCounter, 1621 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:36:38,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 3891 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 387 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 03:36:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12101 states. [2022-11-03 03:36:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12101 to 12098. [2022-11-03 03:36:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12098 states, 7515 states have (on average 1.3824351297405189) internal successors, (10389), 8111 states have internal predecessors, (10389), 3550 states have call successors, (3550), 1036 states have call predecessors, (3550), 1032 states have return successors, (3761), 3234 states have call predecessors, (3761), 3546 states have call successors, (3761) [2022-11-03 03:36:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12098 states to 12098 states and 17700 transitions. [2022-11-03 03:36:39,438 INFO L78 Accepts]: Start accepts. Automaton has 12098 states and 17700 transitions. Word has length 234 [2022-11-03 03:36:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:36:39,439 INFO L495 AbstractCegarLoop]: Abstraction has 12098 states and 17700 transitions. [2022-11-03 03:36:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:36:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12098 states and 17700 transitions. [2022-11-03 03:36:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-03 03:36:39,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:36:39,470 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:36:39,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:36:39,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:36:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:36:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1292626023, now seen corresponding path program 1 times [2022-11-03 03:36:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:36:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832555815] [2022-11-03 03:36:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:36:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-03 03:36:40,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:36:40,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832555815] [2022-11-03 03:36:40,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832555815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:36:40,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426105954] [2022-11-03 03:36:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:36:40,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:36:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:36:40,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:36:40,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:36:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:36:48,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:36:48,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:36:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-03 03:36:48,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:36:48,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426105954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:36:48,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:36:48,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-11-03 03:36:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972010138] [2022-11-03 03:36:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:36:48,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:36:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:36:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:36:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:36:48,335 INFO L87 Difference]: Start difference. First operand 12098 states and 17700 transitions. Second operand has 6 states, 4 states have (on average 21.5) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-03 03:36:52,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:36:55,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:36:58,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:37:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:37:00,673 INFO L93 Difference]: Finished difference Result 24204 states and 35453 transitions. [2022-11-03 03:37:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:37:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 21.5) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 242 [2022-11-03 03:37:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:37:00,730 INFO L225 Difference]: With dead ends: 24204 [2022-11-03 03:37:00,730 INFO L226 Difference]: Without dead ends: 12122 [2022-11-03 03:37:00,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:37:00,770 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 3 mSDsluCounter, 7036 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7975 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:37:00,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7975 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-03 03:37:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12122 states. [2022-11-03 03:37:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12122 to 12100. [2022-11-03 03:37:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12100 states, 7516 states have (on average 1.3825172964342736) internal successors, (10391), 8113 states have internal predecessors, (10391), 3550 states have call successors, (3550), 1036 states have call predecessors, (3550), 1033 states have return successors, (3765), 3234 states have call predecessors, (3765), 3546 states have call successors, (3765) [2022-11-03 03:37:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12100 states to 12100 states and 17706 transitions. [2022-11-03 03:37:01,651 INFO L78 Accepts]: Start accepts. Automaton has 12100 states and 17706 transitions. Word has length 242 [2022-11-03 03:37:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:37:01,651 INFO L495 AbstractCegarLoop]: Abstraction has 12100 states and 17706 transitions. [2022-11-03 03:37:01,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 21.5) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-03 03:37:01,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12100 states and 17706 transitions. [2022-11-03 03:37:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-03 03:37:01,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:37:01,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:37:01,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 03:37:01,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 03:37:01,872 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:37:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:37:01,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1352792809, now seen corresponding path program 1 times [2022-11-03 03:37:01,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:37:01,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070521877] [2022-11-03 03:37:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:37:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-03 03:37:03,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:37:03,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070521877] [2022-11-03 03:37:03,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070521877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:37:03,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137204489] [2022-11-03 03:37:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:37:03,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:37:03,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:37:03,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:37:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:37:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:37:10,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 03:37:10,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:37:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-03 03:37:11,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:37:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-03 03:37:12,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137204489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:37:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443792236] [2022-11-03 03:37:12,073 INFO L159 IcfgInterpreter]: Started Sifa with 120 locations of interest [2022-11-03 03:37:12,076 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:37:12,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:37:12,088 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:37:12,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:37:14,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:14,983 INFO L244 Elim1Store]: Index analysis took 840 ms [2022-11-03 03:37:43,257 WARN L234 SmtUtils]: Spent 28.21s on a formula simplification. DAG size of input: 1375 DAG size of output: 687 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:37:43,263 INFO L356 Elim1Store]: treesize reduction 3252, result has 25.5 percent of original size [2022-11-03 03:37:43,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 89 select indices, 89 select index equivalence classes, 3745 disjoint index pairs (out of 3916 index pairs), introduced 89 new quantified variables, introduced 258 case distinctions, treesize of input 459 treesize of output 1397 [2022-11-03 03:37:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:45,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:45,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 86 select indices, 86 select index equivalence classes, 3830 disjoint index pairs (out of 3655 index pairs), introduced 86 new quantified variables, introduced 0 case distinctions, treesize of input 440 treesize of output 699 [2022-11-03 03:37:50,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-11-03 03:37:50,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:50,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:37:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:52,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,157 INFO L244 Elim1Store]: Index analysis took 239 ms [2022-11-03 03:37:53,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 117 select indices, 117 select index equivalence classes, 908 disjoint index pairs (out of 6786 index pairs), introduced 117 new quantified variables, introduced 0 case distinctions, treesize of input 918 treesize of output 352 [2022-11-03 03:37:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:53,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 88 select indices, 88 select index equivalence classes, 3830 disjoint index pairs (out of 3828 index pairs), introduced 88 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 265 [2022-11-03 03:37:54,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:54,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:37:54,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 89 select indices, 89 select index equivalence classes, 3916 disjoint index pairs (out of 3916 index pairs), introduced 89 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 268 [2022-11-03 03:38:00,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:00,653 INFO L244 Elim1Store]: Index analysis took 208 ms [2022-11-03 03:38:00,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 117 select indices, 117 select index equivalence classes, 908 disjoint index pairs (out of 6786 index pairs), introduced 117 new quantified variables, introduced 0 case distinctions, treesize of input 918 treesize of output 352 [2022-11-03 03:38:01,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:01,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:01,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 89 select indices, 89 select index equivalence classes, 3916 disjoint index pairs (out of 3916 index pairs), introduced 89 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 268 [2022-11-03 03:38:01,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:01,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 88 select indices, 88 select index equivalence classes, 3830 disjoint index pairs (out of 3828 index pairs), introduced 88 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 265 [2022-11-03 03:38:05,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:05,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:05,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:07,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:07,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:07,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:10,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:10,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:11,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:12,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:13,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:13,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:16,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:17,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:17,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:19,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:19,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:19,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:45,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 03:38:45,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-11-03 03:38:45,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 03:38:45,546 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-03 03:38:45,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-11-03 03:38:45,613 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:38:45,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-11-03 03:38:45,678 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:38:45,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-03 03:38:45,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:38:45,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-11-03 03:38:45,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2022-11-03 03:38:50,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:38:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:50,739 INFO L244 Elim1Store]: Index analysis took 170 ms [2022-11-03 03:38:50,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 03:38:51,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:38:51,293 INFO L244 Elim1Store]: Index analysis took 131 ms [2022-11-03 03:38:51,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 03:38:51,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:39:10,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:10,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,068 INFO L244 Elim1Store]: Index analysis took 161 ms [2022-11-03 03:39:11,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 03:39:11,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 03:39:11,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:11,754 INFO L244 Elim1Store]: Index analysis took 166 ms [2022-11-03 03:39:11,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 45 select indices, 45 select index equivalence classes, 541 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 136 [2022-11-03 03:39:12,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:39:12,515 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:39:22,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:22,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,024 INFO L356 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-03 03:39:23,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2022-11-03 03:39:23,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:23,267 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 03:39:23,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-03 03:39:26,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 03:39:26,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:26,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 03:39:27,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:27,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:27,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:27,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 03:39:28,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:39:28,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 03:39:42,661 INFO L356 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2022-11-03 03:39:42,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 2784 treesize of output 2788 [2022-11-03 03:41:11,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:41:11,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 03:41:11,689 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:41:11,692 INFO L158 Benchmark]: Toolchain (without parser) took 462304.89ms. Allocated memory was 104.9MB in the beginning and 5.7GB in the end (delta: 5.6GB). Free memory was 76.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 4.8GB. Max. memory is 16.1GB. [2022-11-03 03:41:11,692 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:41:11,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2818.74ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 75.7MB in the beginning and 47.7MB in the end (delta: 28.1MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2022-11-03 03:41:11,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 405.24ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 47.7MB in the beginning and 105.5MB in the end (delta: -57.8MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-11-03 03:41:11,693 INFO L158 Benchmark]: Boogie Preprocessor took 437.24ms. Allocated memory is still 192.9MB. Free memory was 105.5MB in the beginning and 87.6MB in the end (delta: 17.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2022-11-03 03:41:11,694 INFO L158 Benchmark]: RCFGBuilder took 10223.29ms. Allocated memory was 192.9MB in the beginning and 499.1MB in the end (delta: 306.2MB). Free memory was 87.6MB in the beginning and 307.7MB in the end (delta: -220.1MB). Peak memory consumption was 295.5MB. Max. memory is 16.1GB. [2022-11-03 03:41:11,694 INFO L158 Benchmark]: TraceAbstraction took 448412.85ms. Allocated memory was 499.1MB in the beginning and 5.7GB in the end (delta: 5.2GB). Free memory was 306.7MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 4.7GB. Max. memory is 16.1GB. [2022-11-03 03:41:11,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2818.74ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 75.7MB in the beginning and 47.7MB in the end (delta: 28.1MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 405.24ms. Allocated memory was 134.2MB in the beginning and 192.9MB in the end (delta: 58.7MB). Free memory was 47.7MB in the beginning and 105.5MB in the end (delta: -57.8MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 437.24ms. Allocated memory is still 192.9MB. Free memory was 105.5MB in the beginning and 87.6MB in the end (delta: 17.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. * RCFGBuilder took 10223.29ms. Allocated memory was 192.9MB in the beginning and 499.1MB in the end (delta: 306.2MB). Free memory was 87.6MB in the beginning and 307.7MB in the end (delta: -220.1MB). Peak memory consumption was 295.5MB. Max. memory is 16.1GB. * TraceAbstraction took 448412.85ms. Allocated memory was 499.1MB in the beginning and 5.7GB in the end (delta: 5.2GB). Free memory was 306.7MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 4.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 03:41:11,907 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-03 03:41:11,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:41:14,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:41:14,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:41:14,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:41:14,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:41:14,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:41:14,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:41:14,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:41:14,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:41:14,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:41:14,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:41:14,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:41:14,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:41:14,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:41:14,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:41:14,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:41:14,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:41:14,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:41:14,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:41:14,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:41:14,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:41:14,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:41:14,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:41:14,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:41:14,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:41:14,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:41:14,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:41:14,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:41:14,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:41:14,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:41:14,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:41:14,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:41:14,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:41:14,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:41:14,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:41:14,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:41:14,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:41:14,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:41:14,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:41:14,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:41:14,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:41:14,843 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:41:14,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:41:14,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:41:14,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:41:14,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:41:14,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:41:14,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:41:14,885 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:41:14,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:41:14,886 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:41:14,886 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:41:14,887 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:41:14,887 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:41:14,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:41:14,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:41:14,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:41:14,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:41:14,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:41:14,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:41:14,890 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:41:14,890 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:41:14,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:41:14,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:41:14,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:41:14,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:41:14,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:41:14,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:41:14,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:41:14,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:41:14,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:41:14,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:41:14,893 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:41:14,893 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:41:14,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:41:14,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:41:14,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:41:14,894 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79172d5077d4821f59ec3ee2d8a7cf5ca2cb3c5c1b82d4680e26c94b2b62bba2 [2022-11-03 03:41:15,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:41:15,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:41:15,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:41:15,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:41:15,370 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:41:15,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 03:41:15,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/8eeeb4631/f26e967053d54f4397eb836b618b8957/FLAGc6f64e2ce [2022-11-03 03:41:16,684 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:41:16,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 03:41:16,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/8eeeb4631/f26e967053d54f4397eb836b618b8957/FLAGc6f64e2ce [2022-11-03 03:41:17,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/data/8eeeb4631/f26e967053d54f4397eb836b618b8957 [2022-11-03 03:41:17,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:41:17,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:41:17,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:41:17,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:41:17,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:41:17,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:17" (1/1) ... [2022-11-03 03:41:17,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec89b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:17, skipping insertion in model container [2022-11-03 03:41:17,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:41:17" (1/1) ... [2022-11-03 03:41:17,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:41:17,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:41:19,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2022-11-03 03:41:19,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:19,634 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:41:19,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:41:20,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2022-11-03 03:41:20,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:20,226 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:41:20,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i[239738,239751] [2022-11-03 03:41:20,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:41:20,796 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:41:20,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20 WrapperNode [2022-11-03 03:41:20,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:41:20,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:41:20,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:41:20,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:41:20,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:20,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,083 INFO L138 Inliner]: procedures = 275, calls = 1808, calls flagged for inlining = 104, calls inlined = 100, statements flattened = 4401 [2022-11-03 03:41:21,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:41:21,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:41:21,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:41:21,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:41:21,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:41:21,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:41:21,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:41:21,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:41:21,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (1/1) ... [2022-11-03 03:41:21,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:41:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:41:21,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:41:21,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:41:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 03:41:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:41:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:41:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 03:41:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 03:41:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:41:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 03:41:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:41:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:41:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:41:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:41:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:41:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_delete [2022-11-03 03:41:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_delete [2022-11-03 03:41:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_11 [2022-11-03 03:41:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_11 [2022-11-03 03:41:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2022-11-03 03:41:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2022-11-03 03:41:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2022-11-03 03:41:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2022-11-03 03:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 03:41:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 03:41:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-03 03:41:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-03 03:41:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:41:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:41:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 03:41:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 03:41:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 03:41:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 03:41:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2022-11-03 03:41:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2022-11-03 03:41:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:41:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:41:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 03:41:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 03:41:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:41:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:41:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_49 [2022-11-03 03:41:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_49 [2022-11-03 03:41:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:41:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:41:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_detect_change [2022-11-03 03:41:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_detect_change [2022-11-03 03:41:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 03:41:21,571 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 03:41:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_cancel [2022-11-03 03:41:21,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_cancel [2022-11-03 03:41:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2022-11-03 03:41:21,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2022-11-03 03:41:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2022-11-03 03:41:21,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2022-11-03 03:41:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_26 [2022-11-03 03:41:21,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_26 [2022-11-03 03:41:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:41:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2022-11-03 03:41:21,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2022-11-03 03:41:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:41:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:41:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-03 03:41:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-03 03:41:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:41:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2022-11-03 03:41:21,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2022-11-03 03:41:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:41:21,577 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:41:21,577 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2022-11-03 03:41:21,577 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2022-11-03 03:41:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_disconnect [2022-11-03 03:41:21,578 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_disconnect [2022-11-03 03:41:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-11-03 03:41:21,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-11-03 03:41:21,578 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-03 03:41:21,579 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-03 03:41:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 03:41:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 03:41:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 03:41:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:41:21,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 03:41:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:41:21,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-03 03:41:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:41:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 03:41:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 03:41:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 03:41:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 03:41:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:41:21,583 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:41:21,583 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2022-11-03 03:41:21,583 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2022-11-03 03:41:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:41:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:41:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:41:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:41:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure add_offloaded_reg [2022-11-03 03:41:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure add_offloaded_reg [2022-11-03 03:41:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 03:41:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 03:41:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2022-11-03 03:41:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2022-11-03 03:41:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure roundup_to_multiple_of_64 [2022-11-03 03:41:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure roundup_to_multiple_of_64 [2022-11-03 03:41:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 03:41:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 03:41:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 03:41:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 03:41:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2022-11-03 03:41:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2022-11-03 03:41:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2022-11-03 03:41:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2022-11-03 03:41:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 03:41:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 03:41:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_6 [2022-11-03 03:41:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_6 [2022-11-03 03:41:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-03 03:41:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-03 03:41:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:41:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:41:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 03:41:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 03:41:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2022-11-03 03:41:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2022-11-03 03:41:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 03:41:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 03:41:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:41:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:41:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-03 03:41:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-03 03:41:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_response_error [2022-11-03 03:41:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_response_error [2022-11-03 03:41:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 03:41:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2022-11-03 03:41:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2022-11-03 03:41:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 03:41:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 03:41:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2022-11-03 03:41:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2022-11-03 03:41:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 03:41:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:41:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:41:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2022-11-03 03:41:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2022-11-03 03:41:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 03:41:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 03:41:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:41:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_6 [2022-11-03 03:41:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_6 [2022-11-03 03:41:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_queue_poll_work [2022-11-03 03:41:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_queue_poll_work [2022-11-03 03:41:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 03:41:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 03:41:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-03 03:41:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-03 03:41:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2022-11-03 03:41:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2022-11-03 03:41:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:41:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_to_buffer [2022-11-03 03:41:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_to_buffer [2022-11-03 03:41:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_6 [2022-11-03 03:41:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_6 [2022-11-03 03:41:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_8 [2022-11-03 03:41:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_8 [2022-11-03 03:41:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:41:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:41:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:41:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure __download_offload_pseudocode [2022-11-03 03:41:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __download_offload_pseudocode [2022-11-03 03:41:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 03:41:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2022-11-03 03:41:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2022-11-03 03:41:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 03:41:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:41:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:41:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 03:41:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2022-11-03 03:41:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2022-11-03 03:41:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_InterfaceNumber [2022-11-03 03:41:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_InterfaceNumber [2022-11-03 03:41:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-03 03:41:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-03 03:41:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 03:41:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 03:41:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 03:41:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 03:41:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2022-11-03 03:41:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2022-11-03 03:41:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-03 03:41:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-03 03:41:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure new_system_port_status [2022-11-03 03:41:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure new_system_port_status [2022-11-03 03:41:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2022-11-03 03:41:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2022-11-03 03:41:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:41:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:41:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 03:41:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 03:41:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2022-11-03 03:41:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2022-11-03 03:41:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-11-03 03:41:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-11-03 03:41:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-03 03:41:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-03 03:41:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_46 [2022-11-03 03:41:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_46 [2022-11-03 03:41:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 03:41:21,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 03:41:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 03:41:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2022-11-03 03:41:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2022-11-03 03:41:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2022-11-03 03:41:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2022-11-03 03:41:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 03:41:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 03:41:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_deadwork_thread [2022-11-03 03:41:21,616 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_deadwork_thread [2022-11-03 03:41:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure check_vub300_port_status [2022-11-03 03:41:21,617 INFO L138 BoogieDeclarations]: Found implementation of procedure check_vub300_port_status [2022-11-03 03:41:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-03 03:41:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:41:21,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:41:22,690 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:41:22,695 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:41:32,579 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:42:18,534 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:42:18,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:42:18,566 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:42:18,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:18 BoogieIcfgContainer [2022-11-03 03:42:18,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:42:18,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:42:18,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:42:18,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:42:18,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:41:17" (1/3) ... [2022-11-03 03:42:18,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b88a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:18, skipping insertion in model container [2022-11-03 03:42:18,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:41:20" (2/3) ... [2022-11-03 03:42:18,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b88a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:18, skipping insertion in model container [2022-11-03 03:42:18,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:18" (3/3) ... [2022-11-03 03:42:18,585 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-5fdb450-1-144_1a-drivers--mmc--host--vub300.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 03:42:18,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:42:18,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:42:18,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:42:18,738 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;@63e32a59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:42:18,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:42:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 1586 states, 1107 states have (on average 1.3965672990063234) internal successors, (1546), 1173 states have internal predecessors, (1546), 384 states have call successors, (384), 94 states have call predecessors, (384), 93 states have return successors, (375), 349 states have call predecessors, (375), 375 states have call successors, (375) [2022-11-03 03:42:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 03:42:18,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:18,772 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:18,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1113157247, now seen corresponding path program 1 times [2022-11-03 03:42:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:18,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944054651] [2022-11-03 03:42:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:18,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:18,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:42:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:19,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 03:42:19,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 03:42:19,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:19,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:19,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944054651] [2022-11-03 03:42:19,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944054651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:19,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:19,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:42:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491968290] [2022-11-03 03:42:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:42:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:20,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:42:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:42:20,045 INFO L87 Difference]: Start difference. First operand has 1586 states, 1107 states have (on average 1.3965672990063234) internal successors, (1546), 1173 states have internal predecessors, (1546), 384 states have call successors, (384), 94 states have call predecessors, (384), 93 states have return successors, (375), 349 states have call predecessors, (375), 375 states have call successors, (375) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:42:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:20,294 INFO L93 Difference]: Finished difference Result 3167 states and 4665 transitions. [2022-11-03 03:42:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:42:20,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-03 03:42:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:20,326 INFO L225 Difference]: With dead ends: 3167 [2022-11-03 03:42:20,326 INFO L226 Difference]: Without dead ends: 1570 [2022-11-03 03:42:20,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:42:20,344 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:42:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-11-03 03:42:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2022-11-03 03:42:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1102 states have (on average 1.3874773139745917) internal successors, (1529), 1157 states have internal predecessors, (1529), 375 states have call successors, (375), 93 states have call predecessors, (375), 92 states have return successors, (371), 345 states have call predecessors, (371), 371 states have call successors, (371) [2022-11-03 03:42:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2275 transitions. [2022-11-03 03:42:20,562 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2275 transitions. Word has length 114 [2022-11-03 03:42:20,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:20,563 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 2275 transitions. [2022-11-03 03:42:20,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 03:42:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2275 transitions. [2022-11-03 03:42:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 03:42:20,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:20,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:20,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:20,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:42:20,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 981574537, now seen corresponding path program 1 times [2022-11-03 03:42:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:20,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350758105] [2022-11-03 03:42:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:20,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:20,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:20,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:20,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:42:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:22,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:42:22,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 03:42:22,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:22,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:22,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350758105] [2022-11-03 03:42:22,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350758105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:22,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:42:22,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:42:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694072128] [2022-11-03 03:42:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:22,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:42:22,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:42:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:42:22,481 INFO L87 Difference]: Start difference. First operand 1570 states and 2275 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:42:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:23,458 INFO L93 Difference]: Finished difference Result 3134 states and 4545 transitions. [2022-11-03 03:42:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:42:23,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 114 [2022-11-03 03:42:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:23,473 INFO L225 Difference]: With dead ends: 3134 [2022-11-03 03:42:23,474 INFO L226 Difference]: Without dead ends: 1573 [2022-11-03 03:42:23,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:42:23,482 INFO L413 NwaCegarLoop]: 2266 mSDtfsCounter, 6 mSDsluCounter, 9047 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11313 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:23,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11313 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:42:23,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-11-03 03:42:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2022-11-03 03:42:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1104 states have (on average 1.3876811594202898) internal successors, (1532), 1160 states have internal predecessors, (1532), 375 states have call successors, (375), 93 states have call predecessors, (375), 93 states have return successors, (375), 345 states have call predecessors, (375), 371 states have call successors, (375) [2022-11-03 03:42:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2282 transitions. [2022-11-03 03:42:23,557 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2282 transitions. Word has length 114 [2022-11-03 03:42:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:23,557 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2282 transitions. [2022-11-03 03:42:23,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:42:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2282 transitions. [2022-11-03 03:42:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 03:42:23,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:23,563 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:23,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:23,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:42:23,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:23,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1593780675, now seen corresponding path program 1 times [2022-11-03 03:42:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970951972] [2022-11-03 03:42:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:23,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:23,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:23,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:42:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:24,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:42:25,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:42:25,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:42:27,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970951972] [2022-11-03 03:42:27,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970951972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1927979751] [2022-11-03 03:42:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:42:27,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:42:27,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 03:42:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:28,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:42:28,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 03:42:30,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:30,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1927979751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:30,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:42:30,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 03:42:30,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956404568] [2022-11-03 03:42:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:30,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:42:30,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:42:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:30,562 INFO L87 Difference]: Start difference. First operand 1573 states and 2282 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:30,899 INFO L93 Difference]: Finished difference Result 4666 states and 6919 transitions. [2022-11-03 03:42:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:42:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 116 [2022-11-03 03:42:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:30,923 INFO L225 Difference]: With dead ends: 4666 [2022-11-03 03:42:30,923 INFO L226 Difference]: Without dead ends: 3116 [2022-11-03 03:42:30,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:30,934 INFO L413 NwaCegarLoop]: 2892 mSDtfsCounter, 2205 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:30,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 5158 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:42:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-11-03 03:42:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3111. [2022-11-03 03:42:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2187 states have (on average 1.3886602652034752) internal successors, (3037), 2295 states have internal predecessors, (3037), 739 states have call successors, (739), 184 states have call predecessors, (739), 184 states have return successors, (774), 683 states have call predecessors, (774), 735 states have call successors, (774) [2022-11-03 03:42:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4550 transitions. [2022-11-03 03:42:31,125 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4550 transitions. Word has length 116 [2022-11-03 03:42:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:31,128 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 4550 transitions. [2022-11-03 03:42:31,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4550 transitions. [2022-11-03 03:42:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 03:42:31,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:31,135 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:31,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:31,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:31,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:42:31,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2131857515, now seen corresponding path program 1 times [2022-11-03 03:42:31,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:31,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949231670] [2022-11-03 03:42:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:31,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:31,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:31,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:31,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:42:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:32,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:42:32,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:42:32,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:42:34,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:34,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949231670] [2022-11-03 03:42:34,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949231670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:34,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1875735387] [2022-11-03 03:42:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:34,524 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:34,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:42:34,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:42:34,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 03:42:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:35,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:42:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 03:42:37,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:37,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1875735387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:37,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:42:37,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 03:42:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232996297] [2022-11-03 03:42:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:42:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:42:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:37,326 INFO L87 Difference]: Start difference. First operand 3111 states and 4550 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:37,693 INFO L93 Difference]: Finished difference Result 8922 states and 13294 transitions. [2022-11-03 03:42:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:42:37,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 117 [2022-11-03 03:42:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:37,747 INFO L225 Difference]: With dead ends: 8922 [2022-11-03 03:42:37,748 INFO L226 Difference]: Without dead ends: 5834 [2022-11-03 03:42:37,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:37,773 INFO L413 NwaCegarLoop]: 2602 mSDtfsCounter, 1949 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:37,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 4838 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:42:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2022-11-03 03:42:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5824. [2022-11-03 03:42:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 4096 states have (on average 1.394775390625) internal successors, (5713), 4306 states have internal predecessors, (5713), 1377 states have call successors, (1377), 350 states have call predecessors, (1377), 350 states have return successors, (1445), 1269 states have call predecessors, (1445), 1373 states have call successors, (1445) [2022-11-03 03:42:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 8535 transitions. [2022-11-03 03:42:38,149 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 8535 transitions. Word has length 117 [2022-11-03 03:42:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:38,150 INFO L495 AbstractCegarLoop]: Abstraction has 5824 states and 8535 transitions. [2022-11-03 03:42:38,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 8535 transitions. [2022-11-03 03:42:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 03:42:38,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:38,156 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:38,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:38,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:38,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1662529280, now seen corresponding path program 1 times [2022-11-03 03:42:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150614172] [2022-11-03 03:42:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:38,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:38,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:38,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:42:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:39,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:42:39,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:42:39,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:42:41,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:41,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150614172] [2022-11-03 03:42:41,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150614172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:41,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1842831218] [2022-11-03 03:42:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:42:41,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:42:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-03 03:42:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:42,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:42:42,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 03:42:44,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:44,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1842831218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:44,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:42:44,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 03:42:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715772506] [2022-11-03 03:42:44,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:44,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:42:44,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:44,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:42:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:44,216 INFO L87 Difference]: Start difference. First operand 5824 states and 8535 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:44,497 INFO L93 Difference]: Finished difference Result 5826 states and 8536 transitions. [2022-11-03 03:42:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:42:44,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 118 [2022-11-03 03:42:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:44,539 INFO L225 Difference]: With dead ends: 5826 [2022-11-03 03:42:44,540 INFO L226 Difference]: Without dead ends: 5823 [2022-11-03 03:42:44,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:44,546 INFO L413 NwaCegarLoop]: 2272 mSDtfsCounter, 2206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:44,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 2272 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:42:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2022-11-03 03:42:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 5823. [2022-11-03 03:42:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5823 states, 4096 states have (on average 1.39453125) internal successors, (5712), 4305 states have internal predecessors, (5712), 1376 states have call successors, (1376), 350 states have call predecessors, (1376), 350 states have return successors, (1445), 1269 states have call predecessors, (1445), 1373 states have call successors, (1445) [2022-11-03 03:42:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5823 states to 5823 states and 8533 transitions. [2022-11-03 03:42:45,022 INFO L78 Accepts]: Start accepts. Automaton has 5823 states and 8533 transitions. Word has length 118 [2022-11-03 03:42:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:45,024 INFO L495 AbstractCegarLoop]: Abstraction has 5823 states and 8533 transitions. [2022-11-03 03:42:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5823 states and 8533 transitions. [2022-11-03 03:42:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 03:42:45,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:45,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:45,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:45,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:45,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:45,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1739250, now seen corresponding path program 1 times [2022-11-03 03:42:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:45,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230149968] [2022-11-03 03:42:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:45,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:45,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:45,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:42:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:46,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:42:46,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:42:46,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 03:42:48,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230149968] [2022-11-03 03:42:48,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230149968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:48,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [737196704] [2022-11-03 03:42:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:48,273 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:48,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:42:48,275 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:42:48,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 03:42:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:49,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:42:49,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-03 03:42:51,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:51,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [737196704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:51,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:42:51,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 7] total 12 [2022-11-03 03:42:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279580768] [2022-11-03 03:42:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:51,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:42:51,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:42:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:51,139 INFO L87 Difference]: Start difference. First operand 5823 states and 8533 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:51,563 INFO L93 Difference]: Finished difference Result 5825 states and 8534 transitions. [2022-11-03 03:42:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:42:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 119 [2022-11-03 03:42:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:51,634 INFO L225 Difference]: With dead ends: 5825 [2022-11-03 03:42:51,635 INFO L226 Difference]: Without dead ends: 5793 [2022-11-03 03:42:51,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:51,640 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 2203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:51,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:42:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5793 states. [2022-11-03 03:42:52,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5793 to 5793. [2022-11-03 03:42:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 4080 states have (on average 1.3950980392156862) internal successors, (5692), 4288 states have internal predecessors, (5692), 1363 states have call successors, (1363), 349 states have call predecessors, (1363), 349 states have return successors, (1433), 1257 states have call predecessors, (1433), 1361 states have call successors, (1433) [2022-11-03 03:42:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8488 transitions. [2022-11-03 03:42:52,466 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8488 transitions. Word has length 119 [2022-11-03 03:42:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:52,467 INFO L495 AbstractCegarLoop]: Abstraction has 5793 states and 8488 transitions. [2022-11-03 03:42:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 03:42:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8488 transitions. [2022-11-03 03:42:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 03:42:52,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:52,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:52,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-11-03 03:42:52,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:42:52,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:42:52,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:42:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1282916271, now seen corresponding path program 1 times [2022-11-03 03:42:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:42:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440567298] [2022-11-03 03:42:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:52,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:42:52,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:42:52,909 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:42:52,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:42:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:42:54,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 03:42:54,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:42:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-03 03:42:55,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:42:55,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440567298] [2022-11-03 03:42:55,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440567298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:42:55,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1214499055] [2022-11-03 03:42:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:42:55,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:42:55,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:42:55,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:42:55,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 03:42:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:42:57,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:42:57,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:42:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-03 03:42:57,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:42:57,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1214499055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:42:57,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:42:57,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 03:42:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644875897] [2022-11-03 03:42:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:42:57,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:42:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:42:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:42:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:57,421 INFO L87 Difference]: Start difference. First operand 5793 states and 8488 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:42:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:42:58,625 INFO L93 Difference]: Finished difference Result 16724 states and 24502 transitions. [2022-11-03 03:42:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:42:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 171 [2022-11-03 03:42:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:42:58,761 INFO L225 Difference]: With dead ends: 16724 [2022-11-03 03:42:58,762 INFO L226 Difference]: Without dead ends: 10954 [2022-11-03 03:42:58,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:42:58,788 INFO L413 NwaCegarLoop]: 2693 mSDtfsCounter, 1929 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:42:58,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 4877 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:42:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10954 states. [2022-11-03 03:42:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10954 to 10933. [2022-11-03 03:42:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10933 states, 7696 states have (on average 1.3981288981288982) internal successors, (10760), 8108 states have internal predecessors, (10760), 2559 states have call successors, (2559), 677 states have call predecessors, (2559), 677 states have return successors, (2695), 2349 states have call predecessors, (2695), 2557 states have call successors, (2695) [2022-11-03 03:42:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10933 states to 10933 states and 16014 transitions. [2022-11-03 03:42:59,576 INFO L78 Accepts]: Start accepts. Automaton has 10933 states and 16014 transitions. Word has length 171 [2022-11-03 03:42:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:42:59,576 INFO L495 AbstractCegarLoop]: Abstraction has 10933 states and 16014 transitions. [2022-11-03 03:42:59,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 03:42:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 10933 states and 16014 transitions. [2022-11-03 03:42:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 03:42:59,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:42:59,596 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:42:59,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:42:59,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:00,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:00,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash 983945259, now seen corresponding path program 1 times [2022-11-03 03:43:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:00,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362931251] [2022-11-03 03:43:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:00,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:00,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:00,014 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:00,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 03:43:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:01,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 03:43:01,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 03:43:02,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:02,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362931251] [2022-11-03 03:43:02,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362931251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:02,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [721034827] [2022-11-03 03:43:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:02,931 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:02,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:43:02,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:43:02,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 03:43:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:04,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:43:04,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 03:43:04,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:04,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [721034827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:04,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:43:04,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 03:43:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809286150] [2022-11-03 03:43:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:04,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:04,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:04,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:43:04,418 INFO L87 Difference]: Start difference. First operand 10933 states and 16014 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:43:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:05,260 INFO L93 Difference]: Finished difference Result 21862 states and 32024 transitions. [2022-11-03 03:43:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 210 [2022-11-03 03:43:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:05,327 INFO L225 Difference]: With dead ends: 21862 [2022-11-03 03:43:05,328 INFO L226 Difference]: Without dead ends: 10950 [2022-11-03 03:43:05,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:43:05,379 INFO L413 NwaCegarLoop]: 2268 mSDtfsCounter, 8 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:05,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4531 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2022-11-03 03:43:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 10936. [2022-11-03 03:43:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10936 states, 7699 states have (on average 1.397713988829718) internal successors, (10761), 8111 states have internal predecessors, (10761), 2559 states have call successors, (2559), 677 states have call predecessors, (2559), 677 states have return successors, (2695), 2349 states have call predecessors, (2695), 2557 states have call successors, (2695) [2022-11-03 03:43:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 16015 transitions. [2022-11-03 03:43:06,229 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 16015 transitions. Word has length 210 [2022-11-03 03:43:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:06,230 INFO L495 AbstractCegarLoop]: Abstraction has 10936 states and 16015 transitions. [2022-11-03 03:43:06,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 03:43:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 16015 transitions. [2022-11-03 03:43:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-03 03:43:06,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:06,260 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:06,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:06,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:06,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:06,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1858981994, now seen corresponding path program 1 times [2022-11-03 03:43:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:06,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920267612] [2022-11-03 03:43:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:06,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:06,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:06,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:43:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:07,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:07,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 124 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-03 03:43:08,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-03 03:43:09,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:09,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920267612] [2022-11-03 03:43:09,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920267612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:09,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2126702756] [2022-11-03 03:43:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:09,890 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:09,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:43:09,891 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:43:09,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 03:43:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:11,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:43:11,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-03 03:43:12,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:12,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2126702756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:12,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:43:12,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 7] total 12 [2022-11-03 03:43:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831160435] [2022-11-03 03:43:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:43:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:43:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:43:12,574 INFO L87 Difference]: Start difference. First operand 10936 states and 16015 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:43:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:13,756 INFO L93 Difference]: Finished difference Result 24383 states and 35651 transitions. [2022-11-03 03:43:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:43:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 227 [2022-11-03 03:43:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:13,824 INFO L225 Difference]: With dead ends: 24383 [2022-11-03 03:43:13,824 INFO L226 Difference]: Without dead ends: 13470 [2022-11-03 03:43:13,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:43:13,860 INFO L413 NwaCegarLoop]: 3919 mSDtfsCounter, 2118 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 5820 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:13,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 5820 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2022-11-03 03:43:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 13467. [2022-11-03 03:43:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13467 states, 9475 states have (on average 1.3943007915567283) internal successors, (13211), 9983 states have internal predecessors, (13211), 3131 states have call successors, (3131), 860 states have call predecessors, (3131), 860 states have return successors, (3300), 2867 states have call predecessors, (3300), 3129 states have call successors, (3300) [2022-11-03 03:43:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 19642 transitions. [2022-11-03 03:43:14,949 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 19642 transitions. Word has length 227 [2022-11-03 03:43:14,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:14,955 INFO L495 AbstractCegarLoop]: Abstraction has 13467 states and 19642 transitions. [2022-11-03 03:43:14,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 03:43:14,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 19642 transitions. [2022-11-03 03:43:15,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-03 03:43:15,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:15,013 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:15,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:15,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:15,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:15,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash -98993169, now seen corresponding path program 1 times [2022-11-03 03:43:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:15,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087890513] [2022-11-03 03:43:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:15,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:15,430 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:15,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:43:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:16,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:16,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 03:43:17,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:43:18,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087890513] [2022-11-03 03:43:18,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087890513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1301051187] [2022-11-03 03:43:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:18,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:43:18,749 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:43:18,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 03:43:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:20,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 03:43:20,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 03:43:22,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-03 03:43:28,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1301051187] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:43:28,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:43:28,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 7, 11] total 26 [2022-11-03 03:43:28,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106039976] [2022-11-03 03:43:28,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:43:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:43:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:43:28,688 INFO L87 Difference]: Start difference. First operand 13467 states and 19642 transitions. Second operand has 9 states, 8 states have (on average 20.125) internal successors, (161), 7 states have internal predecessors, (161), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 03:43:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:30,943 INFO L93 Difference]: Finished difference Result 20543 states and 30280 transitions. [2022-11-03 03:43:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:43:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 20.125) internal successors, (161), 7 states have internal predecessors, (161), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 286 [2022-11-03 03:43:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:31,028 INFO L225 Difference]: With dead ends: 20543 [2022-11-03 03:43:31,028 INFO L226 Difference]: Without dead ends: 13797 [2022-11-03 03:43:31,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1140 GetRequests, 1116 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:43:31,066 INFO L413 NwaCegarLoop]: 2292 mSDtfsCounter, 22 mSDsluCounter, 15996 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 18288 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:31,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 18288 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 03:43:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13797 states. [2022-11-03 03:43:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13797 to 13547. [2022-11-03 03:43:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13547 states, 9520 states have (on average 1.392436974789916) internal successors, (13256), 10043 states have internal predecessors, (13256), 3141 states have call successors, (3141), 860 states have call predecessors, (3141), 885 states have return successors, (3367), 2887 states have call predecessors, (3367), 3139 states have call successors, (3367) [2022-11-03 03:43:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13547 states to 13547 states and 19764 transitions. [2022-11-03 03:43:32,252 INFO L78 Accepts]: Start accepts. Automaton has 13547 states and 19764 transitions. Word has length 286 [2022-11-03 03:43:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:32,253 INFO L495 AbstractCegarLoop]: Abstraction has 13547 states and 19764 transitions. [2022-11-03 03:43:32,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 20.125) internal successors, (161), 7 states have internal predecessors, (161), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 03:43:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 13547 states and 19764 transitions. [2022-11-03 03:43:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-03 03:43:32,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:32,317 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:32,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:32,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:32,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:32,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 908431692, now seen corresponding path program 1 times [2022-11-03 03:43:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:32,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429944395] [2022-11-03 03:43:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:32,739 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:32,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 03:43:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:34,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:34,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 03:43:34,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 03:43:36,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:36,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429944395] [2022-11-03 03:43:36,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429944395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:36,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [204309618] [2022-11-03 03:43:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:36,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:36,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:43:36,432 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:43:36,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-03 03:43:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:39,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:39,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 03:43:39,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 03:43:40,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [204309618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:40,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331024550] [2022-11-03 03:43:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:40,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:40,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:40,867 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:40,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-03 03:43:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:43:42,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 03:43:42,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-03 03:43:43,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331024550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:43,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:43:43,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 11 [2022-11-03 03:43:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794779180] [2022-11-03 03:43:43,278 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:43:43,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:43:43,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:43:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:43:43,282 INFO L87 Difference]: Start difference. First operand 13547 states and 19764 transitions. Second operand has 11 states, 9 states have (on average 31.0) internal successors, (279), 11 states have internal predecessors, (279), 4 states have call successors, (66), 2 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2022-11-03 03:43:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:45,317 INFO L93 Difference]: Finished difference Result 27132 states and 39639 transitions. [2022-11-03 03:43:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:43:45,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 31.0) internal successors, (279), 11 states have internal predecessors, (279), 4 states have call successors, (66), 2 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 290 [2022-11-03 03:43:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:45,528 INFO L225 Difference]: With dead ends: 27132 [2022-11-03 03:43:45,528 INFO L226 Difference]: Without dead ends: 13604 [2022-11-03 03:43:45,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1737 GetRequests, 1725 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:43:45,588 INFO L413 NwaCegarLoop]: 2261 mSDtfsCounter, 15 mSDsluCounter, 13534 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15795 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:45,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 15795 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 03:43:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13604 states. [2022-11-03 03:43:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13604 to 13548. [2022-11-03 03:43:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13548 states, 9521 states have (on average 1.392500787732381) internal successors, (13258), 10044 states have internal predecessors, (13258), 3141 states have call successors, (3141), 860 states have call predecessors, (3141), 885 states have return successors, (3367), 2887 states have call predecessors, (3367), 3139 states have call successors, (3367) [2022-11-03 03:43:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13548 states to 13548 states and 19766 transitions. [2022-11-03 03:43:46,959 INFO L78 Accepts]: Start accepts. Automaton has 13548 states and 19766 transitions. Word has length 290 [2022-11-03 03:43:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:46,959 INFO L495 AbstractCegarLoop]: Abstraction has 13548 states and 19766 transitions. [2022-11-03 03:43:46,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 31.0) internal successors, (279), 11 states have internal predecessors, (279), 4 states have call successors, (66), 2 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2022-11-03 03:43:46,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13548 states and 19766 transitions. [2022-11-03 03:43:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-03 03:43:47,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:47,008 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:43:47,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:47,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:47,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:47,633 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1939606721, now seen corresponding path program 1 times [2022-11-03 03:43:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:47,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147941915] [2022-11-03 03:43:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:47,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:47,637 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:47,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 03:43:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:49,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:43:49,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:43:49,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:43:51,862 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:51,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147941915] [2022-11-03 03:43:51,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147941915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:51,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [471959519] [2022-11-03 03:43:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:51,863 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:51,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:43:51,867 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:43:51,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-03 03:43:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:54,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:43:54,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:43:54,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:43:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:43:55,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [471959519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:43:55,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640246411] [2022-11-03 03:43:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:55,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:43:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:55,851 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:43:55,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-03 03:43:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:57,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:43:57,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 03:43:58,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:58,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640246411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:58,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 03:43:58,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8, 8, 8] total 16 [2022-11-03 03:43:58,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890178086] [2022-11-03 03:43:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:58,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:43:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:43:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:43:58,021 INFO L87 Difference]: Start difference. First operand 13548 states and 19766 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:44:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:12,367 INFO L93 Difference]: Finished difference Result 27054 states and 39469 transitions. [2022-11-03 03:44:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:44:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 291 [2022-11-03 03:44:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:12,440 INFO L225 Difference]: With dead ends: 27054 [2022-11-03 03:44:12,440 INFO L226 Difference]: Without dead ends: 13539 [2022-11-03 03:44:12,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1451 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:44:12,488 INFO L413 NwaCegarLoop]: 2138 mSDtfsCounter, 2625 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 4663 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:12,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 4663 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-11-03 03:44:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13539 states. [2022-11-03 03:44:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13539 to 13528. [2022-11-03 03:44:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13528 states, 9511 states have (on average 1.3918620544632532) internal successors, (13238), 10034 states have internal predecessors, (13238), 3131 states have call successors, (3131), 860 states have call predecessors, (3131), 885 states have return successors, (3352), 2877 states have call predecessors, (3352), 3129 states have call successors, (3352) [2022-11-03 03:44:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13528 states to 13528 states and 19721 transitions. [2022-11-03 03:44:13,557 INFO L78 Accepts]: Start accepts. Automaton has 13528 states and 19721 transitions. Word has length 291 [2022-11-03 03:44:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:13,558 INFO L495 AbstractCegarLoop]: Abstraction has 13528 states and 19721 transitions. [2022-11-03 03:44:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:44:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 13528 states and 19721 transitions. [2022-11-03 03:44:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-03 03:44:13,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:13,603 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:13,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:13,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:14,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:14,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:44:14,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash 511842745, now seen corresponding path program 1 times [2022-11-03 03:44:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:14,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761143218] [2022-11-03 03:44:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:14,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:14,209 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:14,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 03:44:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:44:15,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:44:16,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:44:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:44:18,882 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:18,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761143218] [2022-11-03 03:44:18,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761143218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:44:18,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [811311690] [2022-11-03 03:44:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:44:18,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:44:18,887 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:44:18,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 03:44:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:22,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:44:22,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:44:22,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:44:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:44:23,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [811311690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:44:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72625750] [2022-11-03 03:44:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:23,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:23,630 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:23,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-03 03:44:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:25,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:44:25,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 03:44:26,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:26,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72625750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:26,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 03:44:26,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8, 8, 8] total 16 [2022-11-03 03:44:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100111628] [2022-11-03 03:44:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:26,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:44:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:44:26,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:44:26,159 INFO L87 Difference]: Start difference. First operand 13528 states and 19721 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:44:40,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:40,912 INFO L93 Difference]: Finished difference Result 27014 states and 39379 transitions. [2022-11-03 03:44:40,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:44:40,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 294 [2022-11-03 03:44:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:40,982 INFO L225 Difference]: With dead ends: 27014 [2022-11-03 03:44:40,983 INFO L226 Difference]: Without dead ends: 13519 [2022-11-03 03:44:41,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1451 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:44:41,035 INFO L413 NwaCegarLoop]: 2135 mSDtfsCounter, 2024 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 4658 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:41,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 4658 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-03 03:44:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13519 states. [2022-11-03 03:44:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13519 to 13508. [2022-11-03 03:44:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13508 states, 9501 states have (on average 1.3912219766340386) internal successors, (13218), 10024 states have internal predecessors, (13218), 3121 states have call successors, (3121), 860 states have call predecessors, (3121), 885 states have return successors, (3337), 2867 states have call predecessors, (3337), 3119 states have call successors, (3337) [2022-11-03 03:44:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13508 states to 13508 states and 19676 transitions. [2022-11-03 03:44:42,248 INFO L78 Accepts]: Start accepts. Automaton has 13508 states and 19676 transitions. Word has length 294 [2022-11-03 03:44:42,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:42,249 INFO L495 AbstractCegarLoop]: Abstraction has 13508 states and 19676 transitions. [2022-11-03 03:44:42,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:44:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 13508 states and 19676 transitions. [2022-11-03 03:44:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-03 03:44:42,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:42,292 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:44:42,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:42,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:42,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:42,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:44:42,919 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash -871759616, now seen corresponding path program 1 times [2022-11-03 03:44:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:42,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819131434] [2022-11-03 03:44:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:42,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:42,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:42,924 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:42,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 03:44:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:44,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:44:44,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:44:45,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:44:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:44:47,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:47,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819131434] [2022-11-03 03:44:47,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819131434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:44:47,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1456695974] [2022-11-03 03:44:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:47,635 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:44:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:44:47,639 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:44:47,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-03 03:44:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:51,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:44:51,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 03:44:51,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:44:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-03 03:44:52,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1456695974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:44:52,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702712162] [2022-11-03 03:44:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:52,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:44:52,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:44:52,413 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:44:52,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-03 03:44:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:44:53,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-03 03:44:55,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:55,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702712162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:55,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-03 03:44:55,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8, 8, 8] total 18 [2022-11-03 03:44:55,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296494124] [2022-11-03 03:44:55,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:44:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:55,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:44:55,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:44:55,593 INFO L87 Difference]: Start difference. First operand 13508 states and 19676 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:45:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:39,236 INFO L93 Difference]: Finished difference Result 32326 states and 48025 transitions. [2022-11-03 03:45:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:45:39,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 293 [2022-11-03 03:45:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:39,322 INFO L225 Difference]: With dead ends: 32326 [2022-11-03 03:45:39,323 INFO L226 Difference]: Without dead ends: 18851 [2022-11-03 03:45:39,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1444 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:45:39,377 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 3752 mSDsluCounter, 7261 mSDsCounter, 0 mSdLazyCounter, 4699 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3868 SdHoareTripleChecker+Valid, 10509 SdHoareTripleChecker+Invalid, 5310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 4699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:39,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3868 Valid, 10509 Invalid, 5310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [611 Valid, 4699 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2022-11-03 03:45:39,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18851 states. [2022-11-03 03:45:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18851 to 13488. [2022-11-03 03:45:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 9491 states have (on average 1.390580549994732) internal successors, (13198), 10014 states have internal predecessors, (13198), 3111 states have call successors, (3111), 860 states have call predecessors, (3111), 885 states have return successors, (3322), 2857 states have call predecessors, (3322), 3109 states have call successors, (3322) [2022-11-03 03:45:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 19631 transitions. [2022-11-03 03:45:40,970 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 19631 transitions. Word has length 293 [2022-11-03 03:45:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:40,971 INFO L495 AbstractCegarLoop]: Abstraction has 13488 states and 19631 transitions. [2022-11-03 03:45:40,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:45:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 19631 transitions. [2022-11-03 03:45:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-03 03:45:41,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:41,002 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:41,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:41,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:41,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:41,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:41,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash 421530136, now seen corresponding path program 2 times [2022-11-03 03:45:41,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:41,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921912862] [2022-11-03 03:45:41,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:45:41,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:41,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:41,621 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:41,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 03:45:42,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 03:45:42,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:45:42,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:45:42,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-03 03:45:43,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:43,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:43,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921912862] [2022-11-03 03:45:43,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921912862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:43,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:45:43,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:45:43,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741911247] [2022-11-03 03:45:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:43,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:45:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:45:43,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:45:43,436 INFO L87 Difference]: Start difference. First operand 13488 states and 19631 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:45:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:45:45,684 INFO L93 Difference]: Finished difference Result 20374 states and 29909 transitions. [2022-11-03 03:45:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:45:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 292 [2022-11-03 03:45:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:45:45,740 INFO L225 Difference]: With dead ends: 20374 [2022-11-03 03:45:45,741 INFO L226 Difference]: Without dead ends: 13613 [2022-11-03 03:45:45,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:45:45,779 INFO L413 NwaCegarLoop]: 2266 mSDtfsCounter, 35 mSDsluCounter, 11291 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13557 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:45:45,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 13557 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 03:45:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13613 states. [2022-11-03 03:45:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13613 to 13503. [2022-11-03 03:45:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 9506 states have (on average 1.3899642331159268) internal successors, (13213), 10024 states have internal predecessors, (13213), 3111 states have call successors, (3111), 860 states have call predecessors, (3111), 885 states have return successors, (3322), 2862 states have call predecessors, (3322), 3109 states have call successors, (3322) [2022-11-03 03:45:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 19646 transitions. [2022-11-03 03:45:47,180 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 19646 transitions. Word has length 292 [2022-11-03 03:45:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:45:47,180 INFO L495 AbstractCegarLoop]: Abstraction has 13503 states and 19646 transitions. [2022-11-03 03:45:47,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:45:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 19646 transitions. [2022-11-03 03:45:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-03 03:45:47,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:45:47,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:45:47,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 03:45:47,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:45:47,411 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:45:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:45:47,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1949895250, now seen corresponding path program 1 times [2022-11-03 03:45:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:45:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042243321] [2022-11-03 03:45:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:47,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:45:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:45:47,415 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:45:47,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 03:45:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:49,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:45:49,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-03 03:45:49,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:45:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-11-03 03:45:51,613 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:45:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042243321] [2022-11-03 03:45:51,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042243321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:45:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1889273335] [2022-11-03 03:45:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:45:51,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:45:51,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:45:51,616 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:45:51,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90a4e7c-2e20-41fd-9d60-117aa0737d21/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-03 03:45:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:45:53,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:45:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:45:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2022-11-03 03:45:54,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:45:54,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1889273335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:45:54,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:45:54,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 03:45:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179938240] [2022-11-03 03:45:54,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:45:54,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:45:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:45:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:45:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:45:54,090 INFO L87 Difference]: Start difference. First operand 13503 states and 19646 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)