./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/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_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/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_c3bc4503-df00-4853-8291-0081d9a5625b/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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- 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 02:14:11,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:11,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:11,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:11,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:11,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:11,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:11,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:11,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:11,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:11,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:11,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:11,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:11,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:11,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:11,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:11,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:11,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:11,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:11,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:11,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:11,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:11,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:11,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:11,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:11,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:11,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:11,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:11,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:11,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:11,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:11,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:11,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:11,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:11,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:11,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:11,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:11,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:11,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:11,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:11,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:11,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:14:11,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:11,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:11,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:11,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:11,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:11,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:11,149 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:11,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:11,149 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:11,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:11,150 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:11,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:11,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:11,151 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:11,151 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:11,151 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:11,151 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:11,152 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:11,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:11,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:11,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:11,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:11,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:11,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:11,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:11,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:11,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:11,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:11,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:11,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:11,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:11,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:11,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:11,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:11,156 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:11,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:11,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:11,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:11,157 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_c3bc4503-df00-4853-8291-0081d9a5625b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2022-11-03 02:14:11,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:11,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:11,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:11,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:11,517 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:11,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:14:11,609 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/3884c0424/be4ea11801164db38e6b5b1e858a37cd/FLAG6c0780570 [2022-11-03 02:14:12,605 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:12,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:14:12,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/3884c0424/be4ea11801164db38e6b5b1e858a37cd/FLAG6c0780570 [2022-11-03 02:14:13,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/3884c0424/be4ea11801164db38e6b5b1e858a37cd [2022-11-03 02:14:13,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:13,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:13,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:13,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:13,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:13,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:13" (1/1) ... [2022-11-03 02:14:13,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f4ca93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:13, skipping insertion in model container [2022-11-03 02:14:13,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:13" (1/1) ... [2022-11-03 02:14:13,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:13,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:14,466 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_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-03 02:14:14,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:14,549 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:14,861 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_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-03 02:14:14,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:14,973 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:14,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14 WrapperNode [2022-11-03 02:14:14,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:14,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:14,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:14,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:14,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,192 INFO L138 Inliner]: procedures = 153, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1831 [2022-11-03 02:14:15,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:15,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:15,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:15,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:15,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:15,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:15,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:15,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:15,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (1/1) ... [2022-11-03 02:14:15,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:15,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:15,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:15,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2022-11-03 02:14:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2022-11-03 02:14:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:14:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:14:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2022-11-03 02:14:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2022-11-03 02:14:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:14:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-03 02:14:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-03 02:14:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-03 02:14:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-03 02:14:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2022-11-03 02:14:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2022-11-03 02:14:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:14:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:14:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:14:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:14:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:14:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:14:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:14:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-03 02:14:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-03 02:14:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:14:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:14:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 02:14:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 02:14:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 02:14:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 02:14:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-11-03 02:14:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-11-03 02:14:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:14:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:14:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:14:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:14:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:14:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:14:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:14:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:14:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 02:14:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 02:14:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:14:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2022-11-03 02:14:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2022-11-03 02:14:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2022-11-03 02:14:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2022-11-03 02:14:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-03 02:14:15,468 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-03 02:14:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:14:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:14:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:14:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:14:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:14:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2022-11-03 02:14:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2022-11-03 02:14:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:14:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:14:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:14:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:14:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:14:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:14:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:14:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:14:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:14:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:14:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:14:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:14:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:14:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:14:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:14:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:14:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:14:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:14:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:14:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-03 02:14:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-03 02:14:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:14:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:14:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:14:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:14:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:14:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:14:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:14:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:14:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 02:14:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 02:14:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:14:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:14:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:14:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:14:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 02:14:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 02:14:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:14:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:15,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:15,484 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2022-11-03 02:14:15,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2022-11-03 02:14:16,174 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:16,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:17,072 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:14:19,827 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:14:20,385 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:14:20,385 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:14:20,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:20 BoogieIcfgContainer [2022-11-03 02:14:20,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:14:20,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:14:20,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:14:20,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:14:20,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:13" (1/3) ... [2022-11-03 02:14:20,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a4fcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:20, skipping insertion in model container [2022-11-03 02:14:20,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:14" (2/3) ... [2022-11-03 02:14:20,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a4fcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:20, skipping insertion in model container [2022-11-03 02:14:20,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:20" (3/3) ... [2022-11-03 02:14:20,400 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:14:20,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:14:20,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:14:20,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:14:20,500 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;@552952d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:14:20,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:14:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 252 states have (on average 1.3611111111111112) internal successors, (343), 271 states have internal predecessors, (343), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-03 02:14:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 02:14:20,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:20,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:14:20,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash -566691942, now seen corresponding path program 1 times [2022-11-03 02:14:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:20,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925247735] [2022-11-03 02:14:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-03 02:14:21,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:21,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925247735] [2022-11-03 02:14:21,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925247735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:21,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:21,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:21,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146419666] [2022-11-03 02:14:21,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:21,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:21,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:21,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:21,297 INFO L87 Difference]: Start difference. First operand has 406 states, 252 states have (on average 1.3611111111111112) internal successors, (343), 271 states have internal predecessors, (343), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:14:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:23,371 INFO L93 Difference]: Finished difference Result 1170 states and 1622 transitions. [2022-11-03 02:14:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:23,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 57 [2022-11-03 02:14:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:23,440 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 02:14:23,442 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 02:14:23,450 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 02:14:23,454 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 509 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:23,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1034 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:14:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 02:14:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-11-03 02:14:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 481 states have (on average 1.3222453222453223) internal successors, (636), 499 states have internal predecessors, (636), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-03 02:14:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1037 transitions. [2022-11-03 02:14:23,642 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1037 transitions. Word has length 57 [2022-11-03 02:14:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:23,644 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1037 transitions. [2022-11-03 02:14:23,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:14:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1037 transitions. [2022-11-03 02:14:23,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:14:23,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:23,658 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:14:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:14:23,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1715889628, now seen corresponding path program 1 times [2022-11-03 02:14:23,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:23,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850520357] [2022-11-03 02:14:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:23,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 02:14:24,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:24,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850520357] [2022-11-03 02:14:24,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850520357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:24,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:24,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:24,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826485194] [2022-11-03 02:14:24,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:24,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:24,340 INFO L87 Difference]: Start difference. First operand 760 states and 1037 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:26,179 INFO L93 Difference]: Finished difference Result 1178 states and 1598 transitions. [2022-11-03 02:14:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:26,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-11-03 02:14:26,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:26,188 INFO L225 Difference]: With dead ends: 1178 [2022-11-03 02:14:26,188 INFO L226 Difference]: Without dead ends: 1175 [2022-11-03 02:14:26,189 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 02:14:26,191 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 283 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:26,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 940 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:14:26,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-11-03 02:14:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1163. [2022-11-03 02:14:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 747 states have (on average 1.3306559571619812) internal successors, (994), 771 states have internal predecessors, (994), 296 states have call successors, (296), 122 states have call predecessors, (296), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-03 02:14:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1581 transitions. [2022-11-03 02:14:26,271 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1581 transitions. Word has length 71 [2022-11-03 02:14:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:26,272 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1581 transitions. [2022-11-03 02:14:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1581 transitions. [2022-11-03 02:14:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:14:26,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:26,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:14:26,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:14:26,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1652739006, now seen corresponding path program 1 times [2022-11-03 02:14:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:26,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532656595] [2022-11-03 02:14:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:26,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 02:14:26,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:26,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532656595] [2022-11-03 02:14:26,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532656595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:26,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:26,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644075920] [2022-11-03 02:14:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:26,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:26,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:26,928 INFO L87 Difference]: Start difference. First operand 1163 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:28,168 INFO L93 Difference]: Finished difference Result 1165 states and 1582 transitions. [2022-11-03 02:14:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:28,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-03 02:14:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:28,182 INFO L225 Difference]: With dead ends: 1165 [2022-11-03 02:14:28,186 INFO L226 Difference]: Without dead ends: 1162 [2022-11-03 02:14:28,188 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 02:14:28,195 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 515 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:28,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 453 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:14:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-11-03 02:14:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1162. [2022-11-03 02:14:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 747 states have (on average 1.3293172690763053) internal successors, (993), 770 states have internal predecessors, (993), 295 states have call successors, (295), 122 states have call predecessors, (295), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-03 02:14:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1579 transitions. [2022-11-03 02:14:28,303 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1579 transitions. Word has length 72 [2022-11-03 02:14:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:28,311 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1579 transitions. [2022-11-03 02:14:28,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1579 transitions. [2022-11-03 02:14:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:14:28,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:28,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:14:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:14:28,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash -304925409, now seen corresponding path program 1 times [2022-11-03 02:14:28,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:28,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319443553] [2022-11-03 02:14:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:28,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 02:14:28,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:28,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319443553] [2022-11-03 02:14:28,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319443553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:28,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:28,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189561854] [2022-11-03 02:14:28,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:28,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:28,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:28,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:28,598 INFO L87 Difference]: Start difference. First operand 1162 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:29,740 INFO L93 Difference]: Finished difference Result 1164 states and 1580 transitions. [2022-11-03 02:14:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:29,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-11-03 02:14:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:29,751 INFO L225 Difference]: With dead ends: 1164 [2022-11-03 02:14:29,751 INFO L226 Difference]: Without dead ends: 1161 [2022-11-03 02:14:29,752 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 02:14:29,760 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:29,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 451 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:14:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-03 02:14:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-03 02:14:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 747 states have (on average 1.3279785809906293) internal successors, (992), 769 states have internal predecessors, (992), 294 states have call successors, (294), 122 states have call predecessors, (294), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-03 02:14:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1577 transitions. [2022-11-03 02:14:29,865 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1577 transitions. Word has length 73 [2022-11-03 02:14:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:29,868 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 1577 transitions. [2022-11-03 02:14:29,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1577 transitions. [2022-11-03 02:14:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:14:29,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:29,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:14:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:14:29,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash -862975263, now seen corresponding path program 1 times [2022-11-03 02:14:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:29,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013914903] [2022-11-03 02:14:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 02:14:30,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013914903] [2022-11-03 02:14:30,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013914903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:30,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:30,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428021581] [2022-11-03 02:14:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:30,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:30,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:30,076 INFO L87 Difference]: Start difference. First operand 1161 states and 1577 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:32,219 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 02:14:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:32,434 INFO L93 Difference]: Finished difference Result 1163 states and 1578 transitions. [2022-11-03 02:14:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:32,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-03 02:14:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:32,441 INFO L225 Difference]: With dead ends: 1163 [2022-11-03 02:14:32,441 INFO L226 Difference]: Without dead ends: 1160 [2022-11-03 02:14:32,442 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 02:14:32,443 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:32,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 449 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:14:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-03 02:14:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1160. [2022-11-03 02:14:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 747 states have (on average 1.3266398929049532) internal successors, (991), 768 states have internal predecessors, (991), 293 states have call successors, (293), 122 states have call predecessors, (293), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-03 02:14:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1575 transitions. [2022-11-03 02:14:32,534 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1575 transitions. Word has length 74 [2022-11-03 02:14:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:32,535 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1575 transitions. [2022-11-03 02:14:32,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1575 transitions. [2022-11-03 02:14:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:14:32,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:32,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:14:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:14:32,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash -982646686, now seen corresponding path program 1 times [2022-11-03 02:14:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:32,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927416952] [2022-11-03 02:14:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 02:14:32,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:32,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927416952] [2022-11-03 02:14:32,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927416952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:32,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:32,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419051193] [2022-11-03 02:14:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:32,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:32,736 INFO L87 Difference]: Start difference. First operand 1160 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:33,993 INFO L93 Difference]: Finished difference Result 1162 states and 1576 transitions. [2022-11-03 02:14:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-03 02:14:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:33,999 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 02:14:34,000 INFO L226 Difference]: Without dead ends: 1153 [2022-11-03 02:14:34,001 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 02:14:34,001 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 506 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:34,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 448 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:14:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-11-03 02:14:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2022-11-03 02:14:34,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 741 states have (on average 1.3252361673414306) internal successors, (982), 761 states have internal predecessors, (982), 292 states have call successors, (292), 122 states have call predecessors, (292), 119 states have return successors, (291), 281 states have call predecessors, (291), 291 states have call successors, (291) [2022-11-03 02:14:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1565 transitions. [2022-11-03 02:14:34,129 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1565 transitions. Word has length 75 [2022-11-03 02:14:34,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1565 transitions. [2022-11-03 02:14:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:14:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1565 transitions. [2022-11-03 02:14:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 02:14:34,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:34,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:14:34,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1878658366, now seen corresponding path program 1 times [2022-11-03 02:14:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:34,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246419044] [2022-11-03 02:14:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 02:14:34,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:34,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246419044] [2022-11-03 02:14:34,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246419044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:34,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:34,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118227202] [2022-11-03 02:14:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:34,363 INFO L87 Difference]: Start difference. First operand 1153 states and 1565 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:14:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:37,332 INFO L93 Difference]: Finished difference Result 3133 states and 4243 transitions. [2022-11-03 02:14:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-11-03 02:14:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:37,343 INFO L225 Difference]: With dead ends: 3133 [2022-11-03 02:14:37,343 INFO L226 Difference]: Without dead ends: 1994 [2022-11-03 02:14:37,349 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 02:14:37,350 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 441 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:37,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1111 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:14:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-11-03 02:14:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1943. [2022-11-03 02:14:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1243 states have (on average 1.3193885760257442) internal successors, (1640), 1293 states have internal predecessors, (1640), 490 states have call successors, (490), 212 states have call predecessors, (490), 209 states have return successors, (511), 457 states have call predecessors, (511), 489 states have call successors, (511) [2022-11-03 02:14:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2641 transitions. [2022-11-03 02:14:37,533 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2641 transitions. Word has length 104 [2022-11-03 02:14:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:37,534 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 2641 transitions. [2022-11-03 02:14:37,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:14:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2641 transitions. [2022-11-03 02:14:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 02:14:37,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:37,546 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:37,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:14:37,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1613607898, now seen corresponding path program 1 times [2022-11-03 02:14:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:37,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139126291] [2022-11-03 02:14:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:37,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-03 02:14:37,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:37,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139126291] [2022-11-03 02:14:37,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139126291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:37,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:37,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:37,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016168114] [2022-11-03 02:14:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:37,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:37,835 INFO L87 Difference]: Start difference. First operand 1943 states and 2641 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:14:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:39,843 INFO L93 Difference]: Finished difference Result 3620 states and 4906 transitions. [2022-11-03 02:14:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 192 [2022-11-03 02:14:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:39,867 INFO L225 Difference]: With dead ends: 3620 [2022-11-03 02:14:39,867 INFO L226 Difference]: Without dead ends: 1699 [2022-11-03 02:14:39,873 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 02:14:39,874 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 418 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:39,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1039 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:14:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-11-03 02:14:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1691. [2022-11-03 02:14:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1084 states have (on average 1.320110701107011) internal successors, (1431), 1127 states have internal predecessors, (1431), 415 states have call successors, (415), 194 states have call predecessors, (415), 191 states have return successors, (434), 387 states have call predecessors, (434), 414 states have call successors, (434) [2022-11-03 02:14:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2280 transitions. [2022-11-03 02:14:40,064 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2280 transitions. Word has length 192 [2022-11-03 02:14:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:40,064 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2280 transitions. [2022-11-03 02:14:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:14:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2280 transitions. [2022-11-03 02:14:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 02:14:40,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:40,069 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-11-03 02:14:40,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:14:40,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1361042608, now seen corresponding path program 1 times [2022-11-03 02:14:40,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:40,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732313729] [2022-11-03 02:14:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-03 02:14:40,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732313729] [2022-11-03 02:14:40,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732313729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:40,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:40,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798481790] [2022-11-03 02:14:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:40,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:40,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:40,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:40,358 INFO L87 Difference]: Start difference. First operand 1691 states and 2280 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:14:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:43,086 INFO L93 Difference]: Finished difference Result 3798 states and 5259 transitions. [2022-11-03 02:14:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 198 [2022-11-03 02:14:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:43,099 INFO L225 Difference]: With dead ends: 3798 [2022-11-03 02:14:43,100 INFO L226 Difference]: Without dead ends: 2146 [2022-11-03 02:14:43,106 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 02:14:43,107 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 116 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:43,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1056 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:14:43,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-11-03 02:14:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1699. [2022-11-03 02:14:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1092 states have (on average 1.3214285714285714) internal successors, (1443), 1135 states have internal predecessors, (1443), 415 states have call successors, (415), 194 states have call predecessors, (415), 191 states have return successors, (434), 387 states have call predecessors, (434), 414 states have call successors, (434) [2022-11-03 02:14:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2292 transitions. [2022-11-03 02:14:43,347 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2292 transitions. Word has length 198 [2022-11-03 02:14:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:43,347 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2292 transitions. [2022-11-03 02:14:43,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:14:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2292 transitions. [2022-11-03 02:14:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-03 02:14:43,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:43,352 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-11-03 02:14:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:14:43,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1764627269, now seen corresponding path program 1 times [2022-11-03 02:14:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10860145] [2022-11-03 02:14:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:43,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-03 02:14:43,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:43,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10860145] [2022-11-03 02:14:43,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10860145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:43,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:43,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:43,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289173368] [2022-11-03 02:14:43,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:43,774 INFO L87 Difference]: Start difference. First operand 1699 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 02:14:46,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:47,704 INFO L93 Difference]: Finished difference Result 3702 states and 5021 transitions. [2022-11-03 02:14:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 200 [2022-11-03 02:14:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:47,717 INFO L225 Difference]: With dead ends: 3702 [2022-11-03 02:14:47,717 INFO L226 Difference]: Without dead ends: 2042 [2022-11-03 02:14:47,723 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 02:14:47,724 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 166 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:47,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 964 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 02:14:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-11-03 02:14:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1985. [2022-11-03 02:14:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1324 states have (on average 1.3353474320241692) internal successors, (1768), 1369 states have internal predecessors, (1768), 444 states have call successors, (444), 219 states have call predecessors, (444), 216 states have return successors, (465), 414 states have call predecessors, (465), 443 states have call successors, (465) [2022-11-03 02:14:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2677 transitions. [2022-11-03 02:14:47,999 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2677 transitions. Word has length 200 [2022-11-03 02:14:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:48,000 INFO L495 AbstractCegarLoop]: Abstraction has 1985 states and 2677 transitions. [2022-11-03 02:14:48,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 02:14:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2677 transitions. [2022-11-03 02:14:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-03 02:14:48,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:48,006 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-03 02:14:48,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:14:48,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:48,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1350721045, now seen corresponding path program 1 times [2022-11-03 02:14:48,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:48,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515443942] [2022-11-03 02:14:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:48,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-03 02:14:49,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515443942] [2022-11-03 02:14:49,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515443942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:14:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355935907] [2022-11-03 02:14:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:49,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:49,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:49,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:14:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:50,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:14:50,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 70 proven. 44 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-03 02:14:51,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:14:51,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355935907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:51,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1154090252] [2022-11-03 02:14:52,001 INFO L159 IcfgInterpreter]: Started Sifa with 128 locations of interest [2022-11-03 02:14:52,002 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:14:52,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:14:52,013 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:14:52,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:14:57,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:57,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:57,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:57,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:57,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:57,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:58,353 INFO L244 Elim1Store]: Index analysis took 439 ms [2022-11-03 02:14:59,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1097 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 606 [2022-11-03 02:14:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,505 INFO L244 Elim1Store]: Index analysis took 115 ms [2022-11-03 02:14:59,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1085 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 451 treesize of output 581 [2022-11-03 02:14:59,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:14:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:00,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1088 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 456 treesize of output 590 [2022-11-03 02:15:00,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:00,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:03,134 INFO L356 Elim1Store]: treesize reduction 1162, result has 25.4 percent of original size [2022-11-03 02:15:03,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 500 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 93 case distinctions, treesize of input 184 treesize of output 517 [2022-11-03 02:15:03,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 85 treesize of output 85 [2022-11-03 02:15:04,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:04,547 INFO L244 Elim1Store]: Index analysis took 472 ms [2022-11-03 02:15:05,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1097 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 606 [2022-11-03 02:15:05,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,114 INFO L244 Elim1Store]: Index analysis took 142 ms [2022-11-03 02:15:06,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1097 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 608 [2022-11-03 02:15:06,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:06,718 INFO L244 Elim1Store]: Index analysis took 141 ms [2022-11-03 02:15:06,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1082 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 563 [2022-11-03 02:15:07,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:07,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 530 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 259 [2022-11-03 02:15:08,598 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 02:15:08,602 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 02:15:08,610 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 02:15:09,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-03 02:15:09,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 02:15:09,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:09,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:15:09,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:09,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:09,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-03 02:15:11,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-03 02:15:11,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 02:15:11,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:11,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:11,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:15:11,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:15:11,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-03 02:15:21,402 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 02:15:21,454 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 02:15:21,518 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 02:15:21,908 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:21,911 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:21,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:28,797 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 02:15:28,848 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 02:15:29,098 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 02:15:29,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:29,302 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:29,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:42,072 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 02:15:42,165 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 02:15:42,244 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 02:15:42,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:42,573 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:42,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:53,212 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 02:15:53,319 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 02:15:53,383 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 02:15:53,710 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:53,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:15:53,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:16:37,483 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 727 for LOIs [2022-11-03 02:16:38,712 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 116 for LOIs [2022-11-03 02:16:38,762 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 02:16:38,780 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 02:16:39,139 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 135 for LOIs [2022-11-03 02:16:39,153 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 137 for LOIs [2022-11-03 02:16:39,195 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:16:53,357 WARN L234 SmtUtils]: Spent 13.18s on a formula simplification. DAG size of input: 957 DAG size of output: 833 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:14,918 WARN L234 SmtUtils]: Spent 15.77s on a formula simplification. DAG size of input: 881 DAG size of output: 768 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:30,789 WARN L234 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 885 DAG size of output: 762 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:47,488 WARN L234 SmtUtils]: Spent 15.02s on a formula simplification. DAG size of input: 901 DAG size of output: 772 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:06,335 WARN L234 SmtUtils]: Spent 16.96s on a formula simplification. DAG size of input: 905 DAG size of output: 798 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:24,154 WARN L234 SmtUtils]: Spent 15.75s on a formula simplification. DAG size of input: 921 DAG size of output: 785 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:45,000 WARN L234 SmtUtils]: Spent 18.75s on a formula simplification. DAG size of input: 925 DAG size of output: 822 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:52,960 WARN L234 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 727 DAG size of output: 700 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:01,596 WARN L234 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 745 DAG size of output: 718 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:01,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1154090252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:01,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:01,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 7, 7] total 34 [2022-11-03 02:19:01,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125876498] [2022-11-03 02:19:01,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:01,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:19:01,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:01,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:19:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:19:01,633 INFO L87 Difference]: Start difference. First operand 1985 states and 2677 transitions. Second operand has 21 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-03 02:19:35,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:37,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:40,330 WARN L539 Checker$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 02:19:42,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:43,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:45,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:47,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:05,770 INFO L93 Difference]: Finished difference Result 3954 states and 5337 transitions. [2022-11-03 02:20:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:20:05,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) Word has length 211 [2022-11-03 02:20:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:05,782 INFO L225 Difference]: With dead ends: 3954 [2022-11-03 02:20:05,782 INFO L226 Difference]: Without dead ends: 1987 [2022-11-03 02:20:05,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 603 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 142.6s TimeCoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:20:05,789 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 6 mSDsluCounter, 4006 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4081 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 516 IncrementalHoareTripleChecker+Unchecked, 63.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:05,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4081 Invalid, 2767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2247 Invalid, 3 Unknown, 516 Unchecked, 63.8s Time] [2022-11-03 02:20:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2022-11-03 02:20:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1987. [2022-11-03 02:20:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1326 states have (on average 1.334841628959276) internal successors, (1770), 1370 states have internal predecessors, (1770), 444 states have call successors, (444), 220 states have call predecessors, (444), 216 states have return successors, (465), 414 states have call predecessors, (465), 443 states have call successors, (465) [2022-11-03 02:20:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2679 transitions. [2022-11-03 02:20:05,992 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2679 transitions. Word has length 211 [2022-11-03 02:20:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:05,997 INFO L495 AbstractCegarLoop]: Abstraction has 1987 states and 2679 transitions. [2022-11-03 02:20:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 states have internal predecessors, (91), 7 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2022-11-03 02:20:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2679 transitions. [2022-11-03 02:20:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-03 02:20:06,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:06,004 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-03 02:20:06,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:06,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:06,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2102826067, now seen corresponding path program 1 times [2022-11-03 02:20:06,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:06,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603491177] [2022-11-03 02:20:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-03 02:20:07,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:07,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603491177] [2022-11-03 02:20:07,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603491177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:07,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944148085] [2022-11-03 02:20:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:07,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:07,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:07,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:07,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:20:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:08,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:20:08,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 02:20:08,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-03 02:20:08,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944148085] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:08,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:20:08,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-03 02:20:08,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143597477] [2022-11-03 02:20:08,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:08,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:20:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:20:08,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:20:08,722 INFO L87 Difference]: Start difference. First operand 1987 states and 2679 transitions. Second operand has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:20:11,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:12,465 INFO L93 Difference]: Finished difference Result 3951 states and 5332 transitions. [2022-11-03 02:20:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:20:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 212 [2022-11-03 02:20:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:12,477 INFO L225 Difference]: With dead ends: 3951 [2022-11-03 02:20:12,478 INFO L226 Difference]: Without dead ends: 1988 [2022-11-03 02:20:12,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:20:12,485 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:12,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1323 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 02:20:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-11-03 02:20:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1986. [2022-11-03 02:20:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1325 states have (on average 1.3350943396226416) internal successors, (1769), 1370 states have internal predecessors, (1769), 444 states have call successors, (444), 219 states have call predecessors, (444), 216 states have return successors, (465), 414 states have call predecessors, (465), 443 states have call successors, (465) [2022-11-03 02:20:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2678 transitions. [2022-11-03 02:20:12,684 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2678 transitions. Word has length 212 [2022-11-03 02:20:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:12,684 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 2678 transitions. [2022-11-03 02:20:12,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:20:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2678 transitions. [2022-11-03 02:20:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-03 02:20:12,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:12,691 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-03 02:20:12,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:12,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -666642399, now seen corresponding path program 2 times [2022-11-03 02:20:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:12,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933401412] [2022-11-03 02:20:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:12,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-03 02:20:14,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:14,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933401412] [2022-11-03 02:20:14,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933401412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:14,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644682360] [2022-11-03 02:20:14,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:20:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:14,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:14,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:14,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:20:21,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 02:20:21,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:20:21,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 02:20:21,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-03 02:20:22,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:22,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644682360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:22,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:20:22,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-03 02:20:22,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143540657] [2022-11-03 02:20:22,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:22,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:22,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:20:22,336 INFO L87 Difference]: Start difference. First operand 1986 states and 2678 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:20:28,097 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 02:20:30,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:32,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:32,897 INFO L93 Difference]: Finished difference Result 4198 states and 5724 transitions. [2022-11-03 02:20:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:20:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2022-11-03 02:20:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:32,909 INFO L225 Difference]: With dead ends: 4198 [2022-11-03 02:20:32,910 INFO L226 Difference]: Without dead ends: 2252 [2022-11-03 02:20:32,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:20:32,916 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 315 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:32,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 2331 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 855 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:20:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2022-11-03 02:20:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1998. [2022-11-03 02:20:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1334 states have (on average 1.3328335832083957) internal successors, (1778), 1379 states have internal predecessors, (1778), 444 states have call successors, (444), 219 states have call predecessors, (444), 219 states have return successors, (475), 417 states have call predecessors, (475), 443 states have call successors, (475) [2022-11-03 02:20:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2697 transitions. [2022-11-03 02:20:33,114 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2697 transitions. Word has length 213 [2022-11-03 02:20:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:33,115 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 2697 transitions. [2022-11-03 02:20:33,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:20:33,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2697 transitions. [2022-11-03 02:20:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 02:20:33,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:33,121 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:33,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:33,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:20:33,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash -393463730, now seen corresponding path program 1 times [2022-11-03 02:20:33,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:33,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210100994] [2022-11-03 02:20:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-03 02:20:34,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:34,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210100994] [2022-11-03 02:20:34,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210100994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:20:34,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141635111] [2022-11-03 02:20:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:34,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:34,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:34,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:34,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:20:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:35,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:20:35,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 78 proven. 44 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 02:20:35,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:20:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-03 02:20:36,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141635111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:20:36,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1248983417] [2022-11-03 02:20:36,475 INFO L159 IcfgInterpreter]: Started Sifa with 130 locations of interest [2022-11-03 02:20:36,475 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:20:36,476 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:20:36,476 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:20:36,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:20:41,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:41,678 INFO L244 Elim1Store]: Index analysis took 427 ms [2022-11-03 02:20:42,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1097 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 606 [2022-11-03 02:20:42,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1097 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 608 [2022-11-03 02:20:42,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:42,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1082 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 563 [2022-11-03 02:20:43,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 85 treesize of output 85 [2022-11-03 02:20:43,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:43,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:44,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:44,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:44,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:44,043 INFO L244 Elim1Store]: Index analysis took 473 ms [2022-11-03 02:20:45,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1097 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 464 treesize of output 606 [2022-11-03 02:20:45,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:45,462 INFO L244 Elim1Store]: Index analysis took 248 ms [2022-11-03 02:20:45,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1085 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 451 treesize of output 581 [2022-11-03 02:20:46,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,251 INFO L244 Elim1Store]: Index analysis took 105 ms [2022-11-03 02:20:46,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 47 select indices, 47 select index equivalence classes, 1088 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 0 case distinctions, treesize of input 456 treesize of output 590 [2022-11-03 02:20:46,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:46,826 INFO L244 Elim1Store]: Index analysis took 228 ms [2022-11-03 02:20:50,711 INFO L356 Elim1Store]: treesize reduction 1162, result has 25.4 percent of original size [2022-11-03 02:20:50,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 34 select indices, 34 select index equivalence classes, 500 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 93 case distinctions, treesize of input 184 treesize of output 517 [2022-11-03 02:20:50,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:50,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:51,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 530 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 259 [2022-11-03 02:20:52,242 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 02:20:52,246 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 02:20:52,253 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 02:20:52,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:52,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:20:53,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-03 02:20:53,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 02:20:53,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:53,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:53,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-03 02:20:54,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 155 [2022-11-03 02:20:54,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 34 [2022-11-03 02:20:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:55,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:55,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 561 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-03 02:20:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:55,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:20:55,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 530 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:20:56,872 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 02:20:56,959 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 02:20:57,013 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 02:20:57,916 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 02:20:58,007 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 02:20:58,102 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 02:21:10,379 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 02:21:10,437 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 02:21:10,632 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 02:21:10,921 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:10,926 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:10,949 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:19,486 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 02:21:19,605 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 02:21:19,689 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 02:21:20,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:20,013 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:20,021 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:29,886 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 02:21:29,891 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 02:21:29,900 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 02:21:29,944 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-03 02:21:29,945 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 102 treesize of output 105 [2022-11-03 02:21:29,972 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:21:29,972 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 96 treesize of output 99 [2022-11-03 02:21:29,996 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 02:21:29,997 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 92 treesize of output 95 [2022-11-03 02:21:30,049 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 02:21:30,053 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 02:21:30,059 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 02:21:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 77 select indices, 77 select index equivalence classes, 1517 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 690 treesize of output 232 [2022-11-03 02:21:31,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:31,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 77 select indices, 77 select index equivalence classes, 1517 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 690 treesize of output 232 [2022-11-03 02:21:31,937 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 02:21:32,123 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:32,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:39,164 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 02:21:39,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 77 select indices, 77 select index equivalence classes, 1517 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 690 treesize of output 232 [2022-11-03 02:21:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:21:39,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 77 select indices, 77 select index equivalence classes, 1517 disjoint index pairs (out of 2926 index pairs), introduced 77 new quantified variables, introduced 0 case distinctions, treesize of input 690 treesize of output 232 [2022-11-03 02:21:39,827 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:56,427 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 02:21:56,498 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 02:21:56,608 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:21:56,616 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:22:00,298 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 02:22:00,347 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 02:22:00,474 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:22:00,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 02:22:12,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 02:22:12,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-03 02:22:12,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 22 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 53 [2022-11-03 02:22:12,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 1 [2022-11-03 02:22:12,626 INFO L356 Elim1Store]: treesize reduction 81, result has 25.7 percent of original size [2022-11-03 02:22:12,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2022-11-03 02:22:12,728 INFO L356 Elim1Store]: treesize reduction 141, result has 10.2 percent of original size [2022-11-03 02:22:12,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 02:22:12,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:12,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 60 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 71 [2022-11-03 02:22:12,909 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 8 treesize of output 7 [2022-11-03 02:22:12,914 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 02:22:13,069 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 02:22:13,167 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 02:22:13,461 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 02:22:13,502 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 02:22:22,255 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 02:22:22,300 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 02:22:25,011 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 02:22:25,057 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 02:22:29,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:22:29,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 35 [2022-11-03 02:22:29,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:22:29,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2022-11-03 02:22:29,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:22:29,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:29,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:22:29,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:22:29,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:22:29,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-03 02:22:59,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:59,774 INFO L356 Elim1Store]: treesize reduction 144, result has 24.6 percent of original size [2022-11-03 02:22:59,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1072 treesize of output 945 [2022-11-03 02:22:59,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:22:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:00,014 INFO L356 Elim1Store]: treesize reduction 97, result has 16.4 percent of original size [2022-11-03 02:23:00,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 1001 treesize of output 964 [2022-11-03 02:23:00,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:00,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:00,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:00,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:00,184 INFO L356 Elim1Store]: treesize reduction 97, result has 16.4 percent of original size [2022-11-03 02:23:00,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 977 treesize of output 940 [2022-11-03 02:23:29,636 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 02:23:29,683 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 19 treesize of output 1 [2022-11-03 02:23:29,712 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 19 treesize of output 1 [2022-11-03 02:23:29,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:29,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 107 treesize of output 79 [2022-11-03 02:23:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:29,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 107 treesize of output 79 [2022-11-03 02:23:29,918 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 87 treesize of output 83 [2022-11-03 02:23:31,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 77 [2022-11-03 02:23:31,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 77 [2022-11-03 02:23:31,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:31,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:31,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:31,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:31,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2022-11-03 02:23:32,149 INFO L356 Elim1Store]: treesize reduction 29, result has 38.3 percent of original size [2022-11-03 02:23:32,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 46 [2022-11-03 02:23:32,237 INFO L356 Elim1Store]: treesize reduction 21, result has 46.2 percent of original size [2022-11-03 02:23:32,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 62 [2022-11-03 02:23:32,322 INFO L356 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2022-11-03 02:23:32,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 52 [2022-11-03 02:23:32,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2022-11-03 02:23:32,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 [2022-11-03 02:23:32,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 28 [2022-11-03 02:23:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:32,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2022-11-03 02:23:34,065 INFO L356 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2022-11-03 02:23:34,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 21 [2022-11-03 02:23:40,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:40,911 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:23:40,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2022-11-03 02:23:40,982 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 19 treesize of output 1 [2022-11-03 02:23:41,045 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 19 treesize of output 1 [2022-11-03 02:23:52,600 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 19 treesize of output 1 [2022-11-03 02:23:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:23:52,687 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:23:52,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2022-11-03 02:23:52,741 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 19 treesize of output 1 [2022-11-03 02:24:01,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:24:01,403 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 02:24:01,407 INFO L158 Benchmark]: Toolchain (without parser) took 588296.03ms. Allocated memory was 92.3MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 68.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-03 02:24:01,407 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 65.2MB in the beginning and 65.1MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:24:01,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1861.40ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 68.1MB in the beginning and 54.1MB in the end (delta: 14.0MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2022-11-03 02:24:01,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 217.68ms. Allocated memory is still 123.7MB. Free memory was 54.1MB in the beginning and 72.2MB in the end (delta: -18.1MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-11-03 02:24:01,408 INFO L158 Benchmark]: Boogie Preprocessor took 154.23ms. Allocated memory is still 123.7MB. Free memory was 72.2MB in the beginning and 59.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:24:01,408 INFO L158 Benchmark]: RCFGBuilder took 5041.77ms. Allocated memory was 123.7MB in the beginning and 251.7MB in the end (delta: 127.9MB). Free memory was 59.7MB in the beginning and 145.2MB in the end (delta: -85.6MB). Peak memory consumption was 143.7MB. Max. memory is 16.1GB. [2022-11-03 02:24:01,409 INFO L158 Benchmark]: TraceAbstraction took 581014.02ms. Allocated memory was 251.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 144.2MB in the beginning and 1.1GB in the end (delta: -927.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-03 02:24:01,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 65.2MB in the beginning and 65.1MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1861.40ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 68.1MB in the beginning and 54.1MB in the end (delta: 14.0MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 217.68ms. Allocated memory is still 123.7MB. Free memory was 54.1MB in the beginning and 72.2MB in the end (delta: -18.1MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 154.23ms. Allocated memory is still 123.7MB. Free memory was 72.2MB in the beginning and 59.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 5041.77ms. Allocated memory was 123.7MB in the beginning and 251.7MB in the end (delta: 127.9MB). Free memory was 59.7MB in the beginning and 145.2MB in the end (delta: -85.6MB). Peak memory consumption was 143.7MB. Max. memory is 16.1GB. * TraceAbstraction took 581014.02ms. Allocated memory was 251.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 144.2MB in the beginning and 1.1GB in the end (delta: -927.6MB). Peak memory consumption was 1.2GB. 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 02:24:01,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/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_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/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_c3bc4503-df00-4853-8291-0081d9a5625b/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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- 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 02:24:03,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:24:03,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:24:03,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:24:03,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:24:03,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:24:03,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:24:03,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:24:03,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:24:03,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:24:03,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:24:03,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:24:03,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:24:03,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:24:03,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:24:03,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:24:03,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:24:03,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:24:03,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:24:03,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:24:03,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:24:03,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:24:03,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:24:03,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:24:03,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:24:03,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:24:03,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:24:03,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:24:03,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:24:03,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:24:03,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:24:03,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:24:03,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:24:03,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:24:03,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:24:03,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:24:03,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:24:03,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:24:03,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:24:03,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:24:03,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:24:03,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:24:03,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:24:03,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:24:03,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:24:03,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:24:03,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:24:03,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:24:03,872 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:24:03,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:24:03,872 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:24:03,872 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:24:03,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:24:03,873 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:24:03,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:24:03,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:24:03,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:24:03,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:24:03,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:24:03,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:24:03,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:24:03,875 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:24:03,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:24:03,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:24:03,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:24:03,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:24:03,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:24:03,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:24:03,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:03,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:24:03,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:24:03,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:24:03,878 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:24:03,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:03,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:24:03,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:24:03,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:24:03,879 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_c3bc4503-df00-4853-8291-0081d9a5625b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2022-11-03 02:24:04,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:24:04,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:24:04,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:24:04,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:24:04,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:24:04,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:24:04,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/49c57d87f/774b07eca2a84a57b1ccce9c667e2d21/FLAG4268b8a57 [2022-11-03 02:24:05,157 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:24:05,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:24:05,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/49c57d87f/774b07eca2a84a57b1ccce9c667e2d21/FLAG4268b8a57 [2022-11-03 02:24:05,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/data/49c57d87f/774b07eca2a84a57b1ccce9c667e2d21 [2022-11-03 02:24:05,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:24:05,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:24:05,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:05,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:24:05,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:24:05,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:05" (1/1) ... [2022-11-03 02:24:05,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5042805c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:05, skipping insertion in model container [2022-11-03 02:24:05,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:05" (1/1) ... [2022-11-03 02:24:05,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:24:05,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:24:06,614 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_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-03 02:24:06,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:06,729 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:24:06,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:24:06,992 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_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-03 02:24:07,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:07,052 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:24:07,324 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_c3bc4503-df00-4853-8291-0081d9a5625b/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2022-11-03 02:24:07,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:07,424 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:24:07,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07 WrapperNode [2022-11-03 02:24:07,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:07,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:07,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:24:07,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:24:07,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,594 INFO L138 Inliner]: procedures = 167, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1778 [2022-11-03 02:24:07,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:07,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:24:07,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:24:07,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:24:07,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,772 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:24:07,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:24:07,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:24:07,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:24:07,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (1/1) ... [2022-11-03 02:24:07,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:07,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:24:07,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:24:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2022-11-03 02:24:07,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2022-11-03 02:24:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:24:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:24:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2022-11-03 02:24:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2022-11-03 02:24:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:24:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-03 02:24:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-03 02:24:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-03 02:24:07,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-03 02:24:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:24:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2022-11-03 02:24:07,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2022-11-03 02:24:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:24:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:24:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:24:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:24:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:24:07,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:24:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:24:07,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:24:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-03 02:24:07,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-03 02:24:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:24:07,901 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:24:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-03 02:24:07,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-03 02:24:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 02:24:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 02:24:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2022-11-03 02:24:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2022-11-03 02:24:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:24:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:24:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:24:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:24:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:24:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:24:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:24:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:24:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-03 02:24:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-03 02:24:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:24:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2022-11-03 02:24:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2022-11-03 02:24:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2022-11-03 02:24:07,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2022-11-03 02:24:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-03 02:24:07,907 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-03 02:24:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:24:07,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:24:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:24:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:24:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:24:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:24:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:24:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:24:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2022-11-03 02:24:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2022-11-03 02:24:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:24:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:24:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:24:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:24:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:24:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:24:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:24:07,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:24:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:24:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:24:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:24:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:24:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:24:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:24:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:24:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:24:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:24:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:24:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:24:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:24:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:24:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:24:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:24:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-03 02:24:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-03 02:24:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:24:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:24:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:24:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:24:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:24:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:24:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:24:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:24:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:24:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:24:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:24:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:24:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:24:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:24:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:24:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 02:24:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 02:24:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:24:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:24:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:24:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:24:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-03 02:24:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-03 02:24:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:24:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:24:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:24:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2022-11-03 02:24:07,925 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2022-11-03 02:24:08,539 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:24:08,543 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:24:13,180 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:24:28,943 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:24:28,964 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:24:28,969 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:24:28,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:28 BoogieIcfgContainer [2022-11-03 02:24:28,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:24:28,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:24:28,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:24:28,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:24:28,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:24:05" (1/3) ... [2022-11-03 02:24:28,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdd75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:24:28, skipping insertion in model container [2022-11-03 02:24:28,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:07" (2/3) ... [2022-11-03 02:24:28,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdd75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:24:28, skipping insertion in model container [2022-11-03 02:24:28,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:28" (3/3) ... [2022-11-03 02:24:28,984 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-03 02:24:29,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:24:29,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:24:29,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:24:29,090 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;@4e1563b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:24:29,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:24:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-03 02:24:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:24:29,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:29,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:29,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash 148447644, now seen corresponding path program 1 times [2022-11-03 02:24:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:29,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027193702] [2022-11-03 02:24:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:29,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:29,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:29,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:29,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:24:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:29,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:24:29,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:24:29,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:29,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:29,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027193702] [2022-11-03 02:24:29,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027193702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:29,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:29,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:24:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666813935] [2022-11-03 02:24:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:29,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:24:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:24:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:24:29,956 INFO L87 Difference]: Start difference. First operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:24:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:30,073 INFO L93 Difference]: Finished difference Result 1191 states and 1659 transitions. [2022-11-03 02:24:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:24:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-11-03 02:24:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:30,096 INFO L225 Difference]: With dead ends: 1191 [2022-11-03 02:24:30,097 INFO L226 Difference]: Without dead ends: 584 [2022-11-03 02:24:30,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 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 02:24:30,106 INFO L413 NwaCegarLoop]: 812 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, 812 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 02:24:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:24:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-03 02:24:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-11-03 02:24:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 438 states have (on average 1.3333333333333333) internal successors, (584), 449 states have internal predecessors, (584), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-03 02:24:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 793 transitions. [2022-11-03 02:24:30,191 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 793 transitions. Word has length 78 [2022-11-03 02:24:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:30,191 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 793 transitions. [2022-11-03 02:24:30,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:24:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 793 transitions. [2022-11-03 02:24:30,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:24:30,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:30,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:30,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:30,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:30,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash 354669602, now seen corresponding path program 1 times [2022-11-03 02:24:30,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:30,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243765976] [2022-11-03 02:24:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:30,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:30,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:30,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:30,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:24:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:31,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:24:31,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-03 02:24:31,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:31,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:31,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243765976] [2022-11-03 02:24:31,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243765976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:31,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:31,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:24:31,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695086007] [2022-11-03 02:24:31,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:31,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:24:31,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:24:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:24:31,387 INFO L87 Difference]: Start difference. First operand 584 states and 793 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:24:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:31,565 INFO L93 Difference]: Finished difference Result 1162 states and 1578 transitions. [2022-11-03 02:24:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:24:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-03 02:24:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:31,570 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 02:24:31,571 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 02:24:31,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:31,574 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 3 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:31,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2368 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 02:24:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-11-03 02:24:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 439 states have (on average 1.3325740318906605) internal successors, (585), 450 states have internal predecessors, (585), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-03 02:24:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 794 transitions. [2022-11-03 02:24:31,635 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 794 transitions. Word has length 78 [2022-11-03 02:24:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:31,636 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 794 transitions. [2022-11-03 02:24:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:24:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 794 transitions. [2022-11-03 02:24:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:24:31,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:31,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:31,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:31,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:31,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -72101774, now seen corresponding path program 1 times [2022-11-03 02:24:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:31,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373198762] [2022-11-03 02:24:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:31,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:31,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:31,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:24:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:32,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:32,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:32,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-03 02:24:33,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:33,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373198762] [2022-11-03 02:24:33,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373198762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:33,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306152075] [2022-11-03 02:24:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:33,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:33,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:33,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-03 02:24:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:34,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:24:34,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 02:24:34,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:34,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1306152075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:34,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:24:34,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:24:34,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927848613] [2022-11-03 02:24:34,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:34,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:34,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:34,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:34,246 INFO L87 Difference]: Start difference. First operand 585 states and 794 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:24:36,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:36,511 INFO L93 Difference]: Finished difference Result 1694 states and 2306 transitions. [2022-11-03 02:24:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 80 [2022-11-03 02:24:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:36,520 INFO L225 Difference]: With dead ends: 1694 [2022-11-03 02:24:36,520 INFO L226 Difference]: Without dead ends: 1128 [2022-11-03 02:24:36,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:36,523 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 741 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:36,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:24:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-11-03 02:24:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2022-11-03 02:24:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 849 states have (on average 1.3333333333333333) internal successors, (1132), 867 states have internal predecessors, (1132), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-03 02:24:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1533 transitions. [2022-11-03 02:24:36,586 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1533 transitions. Word has length 80 [2022-11-03 02:24:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:36,587 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1533 transitions. [2022-11-03 02:24:36,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-03 02:24:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1533 transitions. [2022-11-03 02:24:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:24:36,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:36,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:24:36,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:36,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2022-11-03 02:24:37,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:37,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:37,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1968189157, now seen corresponding path program 1 times [2022-11-03 02:24:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:37,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268459052] [2022-11-03 02:24:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:37,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:37,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:37,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:37,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:24:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:37,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:37,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:37,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:24:38,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:38,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268459052] [2022-11-03 02:24:38,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268459052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:38,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959212768] [2022-11-03 02:24:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:38,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:38,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:38,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:38,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 02:24:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:39,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:24:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:24:39,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:39,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959212768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:39,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:24:39,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:24:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119006649] [2022-11-03 02:24:39,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:39,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:39,331 INFO L87 Difference]: Start difference. First operand 1128 states and 1533 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:39,539 INFO L93 Difference]: Finished difference Result 1154 states and 1565 transitions. [2022-11-03 02:24:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:39,539 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 100 [2022-11-03 02:24:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:39,545 INFO L225 Difference]: With dead ends: 1154 [2022-11-03 02:24:39,546 INFO L226 Difference]: Without dead ends: 1141 [2022-11-03 02:24:39,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:39,549 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 788 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:39,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 824 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:39,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-11-03 02:24:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1128. [2022-11-03 02:24:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 849 states have (on average 1.332155477031802) internal successors, (1131), 867 states have internal predecessors, (1131), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2022-11-03 02:24:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1532 transitions. [2022-11-03 02:24:39,624 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1532 transitions. Word has length 100 [2022-11-03 02:24:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:39,626 INFO L495 AbstractCegarLoop]: Abstraction has 1128 states and 1532 transitions. [2022-11-03 02:24:39,627 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), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1532 transitions. [2022-11-03 02:24:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:24:39,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:39,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:24:39,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:39,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:40,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:40,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1910930855, now seen corresponding path program 1 times [2022-11-03 02:24:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:40,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348460646] [2022-11-03 02:24:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:40,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:40,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:40,054 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:40,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:24:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:40,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:40,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:40,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:24:41,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:41,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348460646] [2022-11-03 02:24:41,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348460646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:41,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [775448648] [2022-11-03 02:24:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:41,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:41,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:41,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:41,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-03 02:24:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:42,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:24:42,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:24:44,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:44,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [775448648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:44,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:24:44,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-03 02:24:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410695904] [2022-11-03 02:24:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:44,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:44,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:44,081 INFO L87 Difference]: Start difference. First operand 1128 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:44,386 INFO L93 Difference]: Finished difference Result 3345 states and 4629 transitions. [2022-11-03 02:24:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:44,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 100 [2022-11-03 02:24:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:44,398 INFO L225 Difference]: With dead ends: 3345 [2022-11-03 02:24:44,399 INFO L226 Difference]: Without dead ends: 2236 [2022-11-03 02:24:44,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:44,403 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 750 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:44,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1888 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-11-03 02:24:44,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2226. [2022-11-03 02:24:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1680 states have (on average 1.331547619047619) internal successors, (2237), 1712 states have internal predecessors, (2237), 396 states have call successors, (396), 150 states have call predecessors, (396), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-03 02:24:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3056 transitions. [2022-11-03 02:24:44,554 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3056 transitions. Word has length 100 [2022-11-03 02:24:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:44,555 INFO L495 AbstractCegarLoop]: Abstraction has 2226 states and 3056 transitions. [2022-11-03 02:24:44,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3056 transitions. [2022-11-03 02:24:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:24:44,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:44,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:24:44,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:44,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 02:24:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:44,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 890453729, now seen corresponding path program 1 times [2022-11-03 02:24:44,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:44,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535268859] [2022-11-03 02:24:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:44,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:44,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:24:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:45,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:45,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:45,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:24:46,360 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:46,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535268859] [2022-11-03 02:24:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535268859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:46,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926173461] [2022-11-03 02:24:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:46,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:46,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:46,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:24:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:47,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:24:47,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:24:48,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:48,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926173461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:48,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:24:48,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-03 02:24:48,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883294803] [2022-11-03 02:24:48,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:48,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:48,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:48,929 INFO L87 Difference]: Start difference. First operand 2226 states and 3056 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:49,096 INFO L93 Difference]: Finished difference Result 2228 states and 3057 transitions. [2022-11-03 02:24:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2022-11-03 02:24:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:49,108 INFO L225 Difference]: With dead ends: 2228 [2022-11-03 02:24:49,108 INFO L226 Difference]: Without dead ends: 2225 [2022-11-03 02:24:49,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:49,111 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 737 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 790 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 02:24:49,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:24:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-03 02:24:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2022-11-03 02:24:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1680 states have (on average 1.3309523809523809) internal successors, (2236), 1711 states have internal predecessors, (2236), 395 states have call successors, (395), 150 states have call predecessors, (395), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-03 02:24:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3054 transitions. [2022-11-03 02:24:49,333 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3054 transitions. Word has length 101 [2022-11-03 02:24:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:49,333 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3054 transitions. [2022-11-03 02:24:49,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3054 transitions. [2022-11-03 02:24:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:24:49,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:49,336 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-03 02:24:49,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:49,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:49,743 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:49,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:49,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1834034780, now seen corresponding path program 1 times [2022-11-03 02:24:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:49,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222047888] [2022-11-03 02:24:49,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:49,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:49,745 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:49,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:24:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:50,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:50,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:24:51,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:51,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222047888] [2022-11-03 02:24:51,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222047888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:51,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925532880] [2022-11-03 02:24:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:51,168 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:51,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:51,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:51,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 02:24:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:51,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:24:51,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:24:52,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:52,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925532880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:52,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:24:52,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-03 02:24:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487519944] [2022-11-03 02:24:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:52,800 INFO L87 Difference]: Start difference. First operand 2225 states and 3054 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:52,982 INFO L93 Difference]: Finished difference Result 2227 states and 3055 transitions. [2022-11-03 02:24:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 102 [2022-11-03 02:24:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:52,993 INFO L225 Difference]: With dead ends: 2227 [2022-11-03 02:24:52,993 INFO L226 Difference]: Without dead ends: 2224 [2022-11-03 02:24:52,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:52,996 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 734 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 788 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 02:24:52,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 788 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:24:52,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2022-11-03 02:24:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2224. [2022-11-03 02:24:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1680 states have (on average 1.3303571428571428) internal successors, (2235), 1710 states have internal predecessors, (2235), 394 states have call successors, (394), 150 states have call predecessors, (394), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-03 02:24:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3052 transitions. [2022-11-03 02:24:53,216 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3052 transitions. Word has length 102 [2022-11-03 02:24:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:53,216 INFO L495 AbstractCegarLoop]: Abstraction has 2224 states and 3052 transitions. [2022-11-03 02:24:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3052 transitions. [2022-11-03 02:24:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:24:53,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:53,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 02:24:53,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:53,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:53,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:53,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1020281156, now seen corresponding path program 1 times [2022-11-03 02:24:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934197417] [2022-11-03 02:24:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:53,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:53,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:53,646 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:53,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:24:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:54,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:54,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:54,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:24:55,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:55,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934197417] [2022-11-03 02:24:55,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934197417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:55,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [155902071] [2022-11-03 02:24:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:55,086 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:55,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:55,087 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:55,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 02:24:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:24:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:24:56,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:56,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [155902071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:56,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:24:56,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-03 02:24:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602398524] [2022-11-03 02:24:56,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:56,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:56,804 INFO L87 Difference]: Start difference. First operand 2224 states and 3052 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:57,036 INFO L93 Difference]: Finished difference Result 2226 states and 3053 transitions. [2022-11-03 02:24:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:24:57,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 103 [2022-11-03 02:24:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:57,051 INFO L225 Difference]: With dead ends: 2226 [2022-11-03 02:24:57,051 INFO L226 Difference]: Without dead ends: 2223 [2022-11-03 02:24:57,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:57,053 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 731 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 786 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 02:24:57,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 786 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:24:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-11-03 02:24:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2223. [2022-11-03 02:24:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1680 states have (on average 1.3297619047619047) internal successors, (2234), 1709 states have internal predecessors, (2234), 393 states have call successors, (393), 150 states have call predecessors, (393), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-03 02:24:57,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3050 transitions. [2022-11-03 02:24:57,289 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3050 transitions. Word has length 103 [2022-11-03 02:24:57,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:57,289 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3050 transitions. [2022-11-03 02:24:57,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:24:57,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3050 transitions. [2022-11-03 02:24:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 02:24:57,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:57,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 02:24:57,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:57,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:57,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:57,699 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1563727455, now seen corresponding path program 1 times [2022-11-03 02:24:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353752233] [2022-11-03 02:24:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:57,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:57,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:57,701 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:57,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:24:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:24:58,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 02:24:58,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 02:24:59,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:59,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353752233] [2022-11-03 02:24:59,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353752233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:59,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119839234] [2022-11-03 02:24:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:59,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:24:59,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:24:59,015 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:24:59,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 02:24:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:59,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:24:59,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 02:25:00,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:00,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119839234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:00,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:00,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-03 02:25:00,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233576468] [2022-11-03 02:25:00,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:00,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:00,700 INFO L87 Difference]: Start difference. First operand 2223 states and 3050 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:25:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:00,922 INFO L93 Difference]: Finished difference Result 2225 states and 3051 transitions. [2022-11-03 02:25:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:00,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 104 [2022-11-03 02:25:00,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:00,932 INFO L225 Difference]: With dead ends: 2225 [2022-11-03 02:25:00,932 INFO L226 Difference]: Without dead ends: 2213 [2022-11-03 02:25:00,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:00,934 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 728 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 785 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 02:25:00,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:25:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-03 02:25:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2022-11-03 02:25:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1671 states have (on average 1.3297426690604428) internal successors, (2222), 1699 states have internal predecessors, (2222), 392 states have call successors, (392), 150 states have call predecessors, (392), 149 states have return successors, (423), 383 states have call predecessors, (423), 391 states have call successors, (423) [2022-11-03 02:25:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3037 transitions. [2022-11-03 02:25:01,238 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3037 transitions. Word has length 104 [2022-11-03 02:25:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:01,239 INFO L495 AbstractCegarLoop]: Abstraction has 2213 states and 3037 transitions. [2022-11-03 02:25:01,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 02:25:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3037 transitions. [2022-11-03 02:25:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-03 02:25:01,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:01,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:01,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:01,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:01,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:01,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:01,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 824528998, now seen corresponding path program 1 times [2022-11-03 02:25:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:01,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060490346] [2022-11-03 02:25:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:01,665 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:01,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:25:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:02,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:02,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 02:25:02,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:25:03,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060490346] [2022-11-03 02:25:03,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060490346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [244312679] [2022-11-03 02:25:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:03,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:03,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:03,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-03 02:25:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:04,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:04,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 02:25:04,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [244312679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:04,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:04,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:25:04,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204457518] [2022-11-03 02:25:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:04,137 INFO L87 Difference]: Start difference. First operand 2213 states and 3037 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:25:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:04,816 INFO L93 Difference]: Finished difference Result 6311 states and 8671 transitions. [2022-11-03 02:25:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2022-11-03 02:25:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:04,840 INFO L225 Difference]: With dead ends: 6311 [2022-11-03 02:25:04,840 INFO L226 Difference]: Without dead ends: 4117 [2022-11-03 02:25:04,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:04,848 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 673 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:04,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1991 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:04,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2022-11-03 02:25:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 4069. [2022-11-03 02:25:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 3065 states have (on average 1.3252854812398043) internal successors, (4062), 3133 states have internal predecessors, (4062), 716 states have call successors, (716), 288 states have call predecessors, (716), 287 states have return successors, (829), 683 states have call predecessors, (829), 715 states have call successors, (829) [2022-11-03 02:25:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5607 transitions. [2022-11-03 02:25:05,402 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5607 transitions. Word has length 141 [2022-11-03 02:25:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:05,403 INFO L495 AbstractCegarLoop]: Abstraction has 4069 states and 5607 transitions. [2022-11-03 02:25:05,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:25:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5607 transitions. [2022-11-03 02:25:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-03 02:25:05,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:05,411 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2022-11-03 02:25:05,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:05,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:05,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:05,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash -414372010, now seen corresponding path program 1 times [2022-11-03 02:25:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:05,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351410207] [2022-11-03 02:25:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:05,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:05,825 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:05,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:25:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:07,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:07,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-03 02:25:07,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-03 02:25:07,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:07,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351410207] [2022-11-03 02:25:07,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351410207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:07,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [131599887] [2022-11-03 02:25:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:07,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:07,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:07,860 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:07,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-03 02:25:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:09,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 02:25:09,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:09,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [131599887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:09,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:09,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:25:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958071166] [2022-11-03 02:25:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:09,261 INFO L87 Difference]: Start difference. First operand 4069 states and 5607 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:11,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:12,095 INFO L93 Difference]: Finished difference Result 11383 states and 15673 transitions. [2022-11-03 02:25:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 256 [2022-11-03 02:25:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:12,137 INFO L225 Difference]: With dead ends: 11383 [2022-11-03 02:25:12,137 INFO L226 Difference]: Without dead ends: 7343 [2022-11-03 02:25:12,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:12,152 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 633 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1754 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 02:25:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2022-11-03 02:25:12,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7309. [2022-11-03 02:25:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7309 states, 5521 states have (on average 1.3258467668900562) internal successors, (7320), 5641 states have internal predecessors, (7320), 1256 states have call successors, (1256), 532 states have call predecessors, (1256), 531 states have return successors, (1479), 1203 states have call predecessors, (1479), 1255 states have call successors, (1479) [2022-11-03 02:25:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7309 states to 7309 states and 10055 transitions. [2022-11-03 02:25:12,943 INFO L78 Accepts]: Start accepts. Automaton has 7309 states and 10055 transitions. Word has length 256 [2022-11-03 02:25:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:12,943 INFO L495 AbstractCegarLoop]: Abstraction has 7309 states and 10055 transitions. [2022-11-03 02:25:12,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7309 states and 10055 transitions. [2022-11-03 02:25:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:25:12,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:12,953 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-03 02:25:13,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:13,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:13,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash 698212048, now seen corresponding path program 1 times [2022-11-03 02:25:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:13,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325055882] [2022-11-03 02:25:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:13,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:13,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:13,370 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:13,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:25:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:14,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:14,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 02:25:14,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-03 02:25:15,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325055882] [2022-11-03 02:25:15,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325055882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2035790550] [2022-11-03 02:25:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:15,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:15,440 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:15,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-03 02:25:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:16,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 02:25:16,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:16,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2035790550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:16,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:16,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:25:16,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316878231] [2022-11-03 02:25:16,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:16,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:16,882 INFO L87 Difference]: Start difference. First operand 7309 states and 10055 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:18,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:19,594 INFO L93 Difference]: Finished difference Result 15907 states and 22224 transitions. [2022-11-03 02:25:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:19,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 265 [2022-11-03 02:25:19,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:19,632 INFO L225 Difference]: With dead ends: 15907 [2022-11-03 02:25:19,633 INFO L226 Difference]: Without dead ends: 8627 [2022-11-03 02:25:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:19,652 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 153 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:19,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1743 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 02:25:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8627 states. [2022-11-03 02:25:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8627 to 7389. [2022-11-03 02:25:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7389 states, 5601 states have (on average 1.3297625424031423) internal successors, (7448), 5721 states have internal predecessors, (7448), 1256 states have call successors, (1256), 532 states have call predecessors, (1256), 531 states have return successors, (1479), 1203 states have call predecessors, (1479), 1255 states have call successors, (1479) [2022-11-03 02:25:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7389 states to 7389 states and 10183 transitions. [2022-11-03 02:25:20,606 INFO L78 Accepts]: Start accepts. Automaton has 7389 states and 10183 transitions. Word has length 265 [2022-11-03 02:25:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:20,607 INFO L495 AbstractCegarLoop]: Abstraction has 7389 states and 10183 transitions. [2022-11-03 02:25:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 7389 states and 10183 transitions. [2022-11-03 02:25:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-03 02:25:20,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:20,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2022-11-03 02:25:20,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:20,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-11-03 02:25:21,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:21,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:21,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash -998464280, now seen corresponding path program 1 times [2022-11-03 02:25:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:21,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343195593] [2022-11-03 02:25:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:21,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:21,050 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:21,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:25:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:22,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:22,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-03 02:25:22,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-03 02:25:23,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:23,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343195593] [2022-11-03 02:25:23,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343195593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:23,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465248480] [2022-11-03 02:25:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:23,073 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:23,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-03 02:25:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:24,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:24,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-03 02:25:24,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:24,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [465248480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:24,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:24,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:25:24,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083549936] [2022-11-03 02:25:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:24,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:24,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:24,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:24,900 INFO L87 Difference]: Start difference. First operand 7389 states and 10183 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 02:25:26,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:27,986 INFO L93 Difference]: Finished difference Result 15617 states and 21554 transitions. [2022-11-03 02:25:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:27,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 272 [2022-11-03 02:25:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:28,023 INFO L225 Difference]: With dead ends: 15617 [2022-11-03 02:25:28,023 INFO L226 Difference]: Without dead ends: 8257 [2022-11-03 02:25:28,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:28,042 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 210 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:28,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1694 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:25:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2022-11-03 02:25:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 8209. [2022-11-03 02:25:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8209 states, 6287 states have (on average 1.3314776522983935) internal successors, (8371), 6415 states have internal predecessors, (8371), 1334 states have call successors, (1334), 588 states have call predecessors, (1334), 587 states have return successors, (1561), 1273 states have call predecessors, (1561), 1333 states have call successors, (1561) [2022-11-03 02:25:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 11266 transitions. [2022-11-03 02:25:28,740 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 11266 transitions. Word has length 272 [2022-11-03 02:25:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:28,741 INFO L495 AbstractCegarLoop]: Abstraction has 8209 states and 11266 transitions. [2022-11-03 02:25:28,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 02:25:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 11266 transitions. [2022-11-03 02:25:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-03 02:25:28,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:28,750 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:28,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:29,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:29,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:29,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash 714995948, now seen corresponding path program 1 times [2022-11-03 02:25:29,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:29,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848585607] [2022-11-03 02:25:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:29,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:29,168 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:29,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:25:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:30,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:30,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-03 02:25:30,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-03 02:25:31,477 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:31,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848585607] [2022-11-03 02:25:31,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848585607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:31,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [788152894] [2022-11-03 02:25:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:31,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:31,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:31,479 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:31,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 02:25:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:25:32,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-03 02:25:33,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:33,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [788152894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:33,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:33,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-03 02:25:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525873963] [2022-11-03 02:25:33,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:33,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:33,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:33,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:25:33,085 INFO L87 Difference]: Start difference. First operand 8209 states and 11266 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:35,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:37,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:39,016 INFO L93 Difference]: Finished difference Result 26111 states and 36169 transitions. [2022-11-03 02:25:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:39,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 286 [2022-11-03 02:25:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:39,080 INFO L225 Difference]: With dead ends: 26111 [2022-11-03 02:25:39,080 INFO L226 Difference]: Without dead ends: 17931 [2022-11-03 02:25:39,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:39,101 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 1021 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:39,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 2639 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:25:39,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17931 states. [2022-11-03 02:25:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17931 to 16297. [2022-11-03 02:25:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16297 states, 12481 states have (on average 1.3325855300056084) internal successors, (16632), 12741 states have internal predecessors, (16632), 2652 states have call successors, (2652), 1164 states have call predecessors, (2652), 1163 states have return successors, (3107), 2527 states have call predecessors, (3107), 2651 states have call successors, (3107) [2022-11-03 02:25:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16297 states to 16297 states and 22391 transitions. [2022-11-03 02:25:40,586 INFO L78 Accepts]: Start accepts. Automaton has 16297 states and 22391 transitions. Word has length 286 [2022-11-03 02:25:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:40,587 INFO L495 AbstractCegarLoop]: Abstraction has 16297 states and 22391 transitions. [2022-11-03 02:25:40,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16297 states and 22391 transitions. [2022-11-03 02:25:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-03 02:25:40,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:40,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:40,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:40,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:41,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:41,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1207622122, now seen corresponding path program 1 times [2022-11-03 02:25:41,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:41,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52479390] [2022-11-03 02:25:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:41,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:41,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:41,019 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:41,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:25:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:42,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:42,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-03 02:25:42,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-03 02:25:43,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:43,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52479390] [2022-11-03 02:25:43,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52479390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:43,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [283556506] [2022-11-03 02:25:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:43,199 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:43,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:43,201 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:43,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-03 02:25:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:44,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:25:44,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-03 02:25:44,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:44,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [283556506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:44,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:44,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:25:44,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207012972] [2022-11-03 02:25:44,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:44,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:44,939 INFO L87 Difference]: Start difference. First operand 16297 states and 22391 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:47,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:48,923 INFO L93 Difference]: Finished difference Result 39381 states and 54101 transitions. [2022-11-03 02:25:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 286 [2022-11-03 02:25:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:49,002 INFO L225 Difference]: With dead ends: 39381 [2022-11-03 02:25:49,002 INFO L226 Difference]: Without dead ends: 23113 [2022-11-03 02:25:49,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:49,038 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 659 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:49,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1875 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:25:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23113 states. [2022-11-03 02:25:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23113 to 22973. [2022-11-03 02:25:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22973 states, 17665 states have (on average 1.3299745258986697) internal successors, (23494), 18021 states have internal predecessors, (23494), 3616 states have call successors, (3616), 1692 states have call predecessors, (3616), 1691 states have return successors, (4303), 3443 states have call predecessors, (4303), 3615 states have call successors, (4303) [2022-11-03 02:25:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22973 states to 22973 states and 31413 transitions. [2022-11-03 02:25:51,356 INFO L78 Accepts]: Start accepts. Automaton has 22973 states and 31413 transitions. Word has length 286 [2022-11-03 02:25:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:51,356 INFO L495 AbstractCegarLoop]: Abstraction has 22973 states and 31413 transitions. [2022-11-03 02:25:51,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:25:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 22973 states and 31413 transitions. [2022-11-03 02:25:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-03 02:25:51,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:51,373 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:51,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:51,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:51,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:51,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1156928269, now seen corresponding path program 1 times [2022-11-03 02:25:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517546476] [2022-11-03 02:25:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:51,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:51,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:51,798 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:51,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:25:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:53,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-03 02:25:53,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-03 02:25:54,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:54,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517546476] [2022-11-03 02:25:54,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517546476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:54,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1014161338] [2022-11-03 02:25:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:54,021 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:54,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:54,022 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:54,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-03 02:25:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:55,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:25:55,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-11-03 02:25:55,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:55,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1014161338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:55,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:55,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-03 02:25:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634827704] [2022-11-03 02:25:55,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:55,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:55,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:55,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:25:55,803 INFO L87 Difference]: Start difference. First operand 22973 states and 31413 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:25:57,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:01,748 INFO L93 Difference]: Finished difference Result 65035 states and 89121 transitions. [2022-11-03 02:26:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:01,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 309 [2022-11-03 02:26:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:01,893 INFO L225 Difference]: With dead ends: 65035 [2022-11-03 02:26:01,894 INFO L226 Difference]: Without dead ends: 42091 [2022-11-03 02:26:01,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:01,949 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 1052 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:01,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 3733 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:26:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42091 states. [2022-11-03 02:26:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42091 to 38449. [2022-11-03 02:26:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38449 states, 29609 states have (on average 1.3267587557837144) internal successors, (39284), 30273 states have internal predecessors, (39284), 5988 states have call successors, (5988), 2852 states have call predecessors, (5988), 2851 states have return successors, (7067), 5611 states have call predecessors, (7067), 5987 states have call successors, (7067) [2022-11-03 02:26:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38449 states to 38449 states and 52339 transitions. [2022-11-03 02:26:06,110 INFO L78 Accepts]: Start accepts. Automaton has 38449 states and 52339 transitions. Word has length 309 [2022-11-03 02:26:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:06,111 INFO L495 AbstractCegarLoop]: Abstraction has 38449 states and 52339 transitions. [2022-11-03 02:26:06,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:26:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 38449 states and 52339 transitions. [2022-11-03 02:26:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-03 02:26:06,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:06,137 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:06,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:06,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 02:26:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:06,540 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1116949080, now seen corresponding path program 1 times [2022-11-03 02:26:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415469859] [2022-11-03 02:26:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:06,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:06,543 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:06,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:26:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:08,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:26:08,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-03 02:26:08,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-03 02:26:08,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:08,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415469859] [2022-11-03 02:26:08,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415469859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:08,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1877051570] [2022-11-03 02:26:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:26:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:26:08,764 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:26:08,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-03 02:26:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:10,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:10,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-03 02:26:10,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:10,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1877051570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:10,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:10,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-03 02:26:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623575407] [2022-11-03 02:26:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:10,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:10,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:10,829 INFO L87 Difference]: Start difference. First operand 38449 states and 52339 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:26:12,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:14,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:18,664 INFO L93 Difference]: Finished difference Result 77173 states and 105340 transitions. [2022-11-03 02:26:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:26:18,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 325 [2022-11-03 02:26:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:18,931 INFO L225 Difference]: With dead ends: 77173 [2022-11-03 02:26:18,931 INFO L226 Difference]: Without dead ends: 38641 [2022-11-03 02:26:19,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:26:19,006 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 0 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:19,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3107 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-11-03 02:26:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38641 states. [2022-11-03 02:26:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38641 to 38561. [2022-11-03 02:26:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38561 states, 29665 states have (on average 1.3261419180852856) internal successors, (39340), 30385 states have internal predecessors, (39340), 5988 states have call successors, (5988), 2852 states have call predecessors, (5988), 2907 states have return successors, (7339), 5611 states have call predecessors, (7339), 5987 states have call successors, (7339) [2022-11-03 02:26:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38561 states to 38561 states and 52667 transitions. [2022-11-03 02:26:22,460 INFO L78 Accepts]: Start accepts. Automaton has 38561 states and 52667 transitions. Word has length 325 [2022-11-03 02:26:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:22,461 INFO L495 AbstractCegarLoop]: Abstraction has 38561 states and 52667 transitions. [2022-11-03 02:26:22,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:26:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 38561 states and 52667 transitions. [2022-11-03 02:26:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-03 02:26:22,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:22,485 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:22,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:22,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:22,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:22,892 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2080184187, now seen corresponding path program 1 times [2022-11-03 02:26:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:22,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495080469] [2022-11-03 02:26:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:22,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:22,894 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:22,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:26:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:24,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:26:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-03 02:26:24,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-03 02:26:25,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:25,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495080469] [2022-11-03 02:26:25,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495080469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:25,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [633294164] [2022-11-03 02:26:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:25,139 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:26:25,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:26:25,140 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:26:25,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3bc4503-df00-4853-8291-0081d9a5625b/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-03 02:26:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:26,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:26:26,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-03 02:26:27,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:27,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [633294164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:27,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:26:27,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:26:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387880024] [2022-11-03 02:26:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:27,407 INFO L87 Difference]: Start difference. First operand 38561 states and 52667 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33)