./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9 --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 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 --- 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-6b4ec56 [2022-11-20 20:26:57,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:26:57,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:26:57,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:26:57,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:26:57,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:26:57,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:26:57,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:26:57,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:26:57,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:26:57,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:26:57,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:26:57,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:26:57,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:26:57,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:26:57,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:26:57,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:26:57,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:26:57,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:26:57,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:26:57,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:26:57,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:26:57,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:26:57,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:26:57,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:26:57,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:26:57,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:26:57,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:26:57,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:26:57,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:26:57,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:26:57,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:26:57,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:26:57,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:26:57,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:26:57,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:26:57,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:26:57,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:26:57,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:26:57,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:26:57,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:26:57,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:26:57,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:26:57,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:26:57,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:26:57,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:26:57,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:26:57,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:26:57,304 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:26:57,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:26:57,305 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:26:57,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:26:57,306 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:26:57,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:26:57,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:26:57,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:26:57,307 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:26:57,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:26:57,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:26:57,308 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:26:57,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:26:57,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:26:57,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:26:57,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:26:57,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:26:57,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:26:57,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:26:57,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:26:57,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:26:57,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:26:57,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:26:57,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:26:57,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:26:57,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:26:57,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:26:57,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:26:57,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:26:57,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:26:57,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:26:57,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:26:57,315 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_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65cc93bea37c503291576929a444106bffa9d5b7b84b8d294ee7e7120b60ffa5 [2022-11-20 20:26:57,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:26:57,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:26:57,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:26:57,753 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:26:57,754 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:26:57,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-11-20 20:27:00,982 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:27:01,440 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:27:01,441 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-11-20 20:27:01,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/data/29ee7ede5/30daa589bcbc4a909e073f0b57c6dda3/FLAGab6bce6d5 [2022-11-20 20:27:01,498 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/data/29ee7ede5/30daa589bcbc4a909e073f0b57c6dda3 [2022-11-20 20:27:01,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:27:01,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:27:01,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:27:01,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:27:01,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:27:01,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:27:01" (1/1) ... [2022-11-20 20:27:01,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ca27ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:01, skipping insertion in model container [2022-11-20 20:27:01,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:27:01" (1/1) ... [2022-11-20 20:27:01,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:27:01,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:27:03,056 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2022-11-20 20:27:03,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:27:03,251 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:27:03,677 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i[138616,138629] [2022-11-20 20:27:03,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:27:03,772 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:27:03,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03 WrapperNode [2022-11-20 20:27:03,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:27:03,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:27:03,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:27:03,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:27:03,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:03,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:03,946 INFO L138 Inliner]: procedures = 161, calls = 831, calls flagged for inlining = 53, calls inlined = 28, statements flattened = 1123 [2022-11-20 20:27:03,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:27:03,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:27:03,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:27:03,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:27:03,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:03,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:03,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:03,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:04,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:04,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:04,119 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:04,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:04,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:27:04,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:27:04,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:27:04,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:27:04,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (1/1) ... [2022-11-20 20:27:04,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:27:04,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:04,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:27:04,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:27:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2022-11-20 20:27:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2022-11-20 20:27:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure pf_getgeo [2022-11-20 20:27:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_getgeo [2022-11-20 20:27:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-11-20 20:27:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-11-20 20:27:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2022-11-20 20:27:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2022-11-20 20:27:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2022-11-20 20:27:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2022-11-20 20:27:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:27:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pf_mutex [2022-11-20 20:27:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pf_mutex [2022-11-20 20:27:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure pf_reset [2022-11-20 20:27:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_reset [2022-11-20 20:27:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:27:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2022-11-20 20:27:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2022-11-20 20:27:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure pf_wait [2022-11-20 20:27:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_wait [2022-11-20 20:27:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2022-11-20 20:27:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2022-11-20 20:27:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:27:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:27:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pf_mutex [2022-11-20 20:27:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pf_mutex [2022-11-20 20:27:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure pf_check_events [2022-11-20 20:27:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_check_events [2022-11-20 20:27:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-20 20:27:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-20 20:27:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:27:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 20:27:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 20:27:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 20:27:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 20:27:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-20 20:27:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-20 20:27:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure pf_req_sense [2022-11-20 20:27:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_req_sense [2022-11-20 20:27:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure pf_completion [2022-11-20 20:27:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_completion [2022-11-20 20:27:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:27:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 20:27:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 20:27:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:27:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 20:27:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 20:27:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:27:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:27:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure pf_atapi [2022-11-20 20:27:04,264 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_atapi [2022-11-20 20:27:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure pf_command [2022-11-20 20:27:04,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_command [2022-11-20 20:27:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure pf_probe [2022-11-20 20:27:04,265 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_probe [2022-11-20 20:27:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:27:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure pf_identify [2022-11-20 20:27:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_identify [2022-11-20 20:27:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure pf_sleep [2022-11-20 20:27:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_sleep [2022-11-20 20:27:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure pf_mode_sense [2022-11-20 20:27:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_mode_sense [2022-11-20 20:27:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2022-11-20 20:27:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2022-11-20 20:27:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:27:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:27:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2022-11-20 20:27:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2022-11-20 20:27:04,269 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2022-11-20 20:27:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2022-11-20 20:27:04,269 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2022-11-20 20:27:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2022-11-20 20:27:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-20 20:27:04,270 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-20 20:27:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure get_capacity [2022-11-20 20:27:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure get_capacity [2022-11-20 20:27:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure pf_lock [2022-11-20 20:27:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_lock [2022-11-20 20:27:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:27:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure xl [2022-11-20 20:27:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure xl [2022-11-20 20:27:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:27:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:27:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2022-11-20 20:27:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2022-11-20 20:27:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure pf_ioctl [2022-11-20 20:27:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pf_ioctl [2022-11-20 20:27:04,805 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:27:04,808 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:27:08,590 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:27:09,017 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:27:09,017 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 20:27:09,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:27:09 BoogieIcfgContainer [2022-11-20 20:27:09,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:27:09,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:27:09,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:27:09,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:27:09,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:27:01" (1/3) ... [2022-11-20 20:27:09,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77719580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:27:09, skipping insertion in model container [2022-11-20 20:27:09,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:27:03" (2/3) ... [2022-11-20 20:27:09,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77719580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:27:09, skipping insertion in model container [2022-11-20 20:27:09,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:27:09" (3/3) ... [2022-11-20 20:27:09,040 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pf.ko-main.cil.out.i [2022-11-20 20:27:09,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:27:09,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:27:09,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:27:09,170 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;@5c0b0e1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:27:09,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:27:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 250 states have (on average 1.38) internal successors, (345), 264 states have internal predecessors, (345), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-20 20:27:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:27:09,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:09,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:09,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2109278676, now seen corresponding path program 1 times [2022-11-20 20:27:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:09,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307615869] [2022-11-20 20:27:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:09,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:27:09,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:09,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307615869] [2022-11-20 20:27:09,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307615869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:09,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:27:09,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:27:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282351944] [2022-11-20 20:27:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:09,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:27:09,725 INFO L87 Difference]: Start difference. First operand has 399 states, 250 states have (on average 1.38) internal successors, (345), 264 states have internal predecessors, (345), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:10,908 INFO L93 Difference]: Finished difference Result 1090 states and 1591 transitions. [2022-11-20 20:27:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 20:27:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:10,942 INFO L225 Difference]: With dead ends: 1090 [2022-11-20 20:27:10,944 INFO L226 Difference]: Without dead ends: 688 [2022-11-20 20:27:10,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:27:10,963 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 411 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:10,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1142 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:27:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-20 20:27:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 675. [2022-11-20 20:27:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 423 states have (on average 1.3593380614657211) internal successors, (575), 436 states have internal predecessors, (575), 187 states have call successors, (187), 65 states have call predecessors, (187), 64 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) [2022-11-20 20:27:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 943 transitions. [2022-11-20 20:27:11,100 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 943 transitions. Word has length 14 [2022-11-20 20:27:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:11,102 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 943 transitions. [2022-11-20 20:27:11,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 943 transitions. [2022-11-20 20:27:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:27:11,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:11,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:11,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:27:11,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1855920781, now seen corresponding path program 1 times [2022-11-20 20:27:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:11,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014319935] [2022-11-20 20:27:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:11,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:27:11,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:11,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014319935] [2022-11-20 20:27:11,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014319935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:11,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:27:11,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:27:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093370951] [2022-11-20 20:27:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:27:11,349 INFO L87 Difference]: Start difference. First operand 675 states and 943 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:12,234 INFO L93 Difference]: Finished difference Result 1349 states and 1885 transitions. [2022-11-20 20:27:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 20:27:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:12,241 INFO L225 Difference]: With dead ends: 1349 [2022-11-20 20:27:12,241 INFO L226 Difference]: Without dead ends: 675 [2022-11-20 20:27:12,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:27:12,246 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 538 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:12,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 475 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:27:12,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-11-20 20:27:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2022-11-20 20:27:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 423 states have (on average 1.3546099290780143) internal successors, (573), 436 states have internal predecessors, (573), 187 states have call successors, (187), 65 states have call predecessors, (187), 64 states have return successors, (181), 181 states have call predecessors, (181), 181 states have call successors, (181) [2022-11-20 20:27:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 941 transitions. [2022-11-20 20:27:12,318 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 941 transitions. Word has length 15 [2022-11-20 20:27:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:12,318 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 941 transitions. [2022-11-20 20:27:12,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 941 transitions. [2022-11-20 20:27:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 20:27:12,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:12,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:27:12,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash 164374478, now seen corresponding path program 1 times [2022-11-20 20:27:12,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:12,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586580414] [2022-11-20 20:27:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:27:12,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:12,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586580414] [2022-11-20 20:27:12,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586580414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:12,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:27:12,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:27:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855493399] [2022-11-20 20:27:12,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:12,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:27:12,522 INFO L87 Difference]: Start difference. First operand 675 states and 941 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:27:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:13,329 INFO L93 Difference]: Finished difference Result 1520 states and 2098 transitions. [2022-11-20 20:27:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:13,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 20:27:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:13,336 INFO L225 Difference]: With dead ends: 1520 [2022-11-20 20:27:13,336 INFO L226 Difference]: Without dead ends: 846 [2022-11-20 20:27:13,339 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 [2022-11-20 20:27:13,340 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 375 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:13,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 964 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:27:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-11-20 20:27:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 564. [2022-11-20 20:27:13,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 347 states have (on average 1.340057636887608) internal successors, (465), 359 states have internal predecessors, (465), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-20 20:27:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 773 transitions. [2022-11-20 20:27:13,438 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 773 transitions. Word has length 16 [2022-11-20 20:27:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:13,439 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 773 transitions. [2022-11-20 20:27:13,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:27:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 773 transitions. [2022-11-20 20:27:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 20:27:13,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:13,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:13,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:27:13,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 412987080, now seen corresponding path program 1 times [2022-11-20 20:27:13,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:13,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330683772] [2022-11-20 20:27:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:13,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:27:13,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:13,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330683772] [2022-11-20 20:27:13,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330683772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:13,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:27:13,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:27:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852071358] [2022-11-20 20:27:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:13,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:27:13,633 INFO L87 Difference]: Start difference. First operand 564 states and 773 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:14,428 INFO L93 Difference]: Finished difference Result 1125 states and 1543 transitions. [2022-11-20 20:27:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 20:27:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:14,434 INFO L225 Difference]: With dead ends: 1125 [2022-11-20 20:27:14,434 INFO L226 Difference]: Without dead ends: 571 [2022-11-20 20:27:14,437 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 [2022-11-20 20:27:14,438 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 9 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:14,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 945 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:27:14,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-20 20:27:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2022-11-20 20:27:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 348 states have (on average 1.339080459770115) internal successors, (466), 360 states have internal predecessors, (466), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-20 20:27:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 774 transitions. [2022-11-20 20:27:14,493 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 774 transitions. Word has length 21 [2022-11-20 20:27:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:14,493 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 774 transitions. [2022-11-20 20:27:14,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 774 transitions. [2022-11-20 20:27:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 20:27:14,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:14,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:14,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:27:14,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2137308234, now seen corresponding path program 1 times [2022-11-20 20:27:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:14,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457615889] [2022-11-20 20:27:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:14,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:27:14,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457615889] [2022-11-20 20:27:14,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457615889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542509940] [2022-11-20 20:27:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:14,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:14,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:14,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:14,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:27:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:27:15,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:15,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:15,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542509940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:15,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:15,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:27:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833856251] [2022-11-20 20:27:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:15,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:15,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:15,235 INFO L87 Difference]: Start difference. First operand 565 states and 774 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:16,192 INFO L93 Difference]: Finished difference Result 1137 states and 1562 transitions. [2022-11-20 20:27:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 20:27:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:16,196 INFO L225 Difference]: With dead ends: 1137 [2022-11-20 20:27:16,197 INFO L226 Difference]: Without dead ends: 582 [2022-11-20 20:27:16,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:16,200 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 14 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:16,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 952 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:27:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-20 20:27:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2022-11-20 20:27:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 350 states have (on average 1.3371428571428572) internal successors, (468), 362 states have internal predecessors, (468), 157 states have call successors, (157), 60 states have call predecessors, (157), 59 states have return successors, (151), 151 states have call predecessors, (151), 151 states have call successors, (151) [2022-11-20 20:27:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 776 transitions. [2022-11-20 20:27:16,294 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 776 transitions. Word has length 24 [2022-11-20 20:27:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:16,294 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 776 transitions. [2022-11-20 20:27:16,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 776 transitions. [2022-11-20 20:27:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 20:27:16,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:16,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:16,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:16,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:16,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1039996058, now seen corresponding path program 1 times [2022-11-20 20:27:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:16,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969162298] [2022-11-20 20:27:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:16,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:16,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969162298] [2022-11-20 20:27:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969162298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391992344] [2022-11-20 20:27:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:16,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:16,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:16,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:16,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:27:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:17,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:27:17,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:17,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391992344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:17,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:17,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:27:17,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313402083] [2022-11-20 20:27:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:17,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:17,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:17,229 INFO L87 Difference]: Start difference. First operand 567 states and 776 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:18,257 INFO L93 Difference]: Finished difference Result 1657 states and 2262 transitions. [2022-11-20 20:27:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:18,258 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 20:27:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:18,265 INFO L225 Difference]: With dead ends: 1657 [2022-11-20 20:27:18,266 INFO L226 Difference]: Without dead ends: 1100 [2022-11-20 20:27:18,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:18,270 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 515 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:18,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1033 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:27:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2022-11-20 20:27:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 783. [2022-11-20 20:27:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 479 states have (on average 1.3194154488517744) internal successors, (632), 494 states have internal predecessors, (632), 219 states have call successors, (219), 85 states have call predecessors, (219), 84 states have return successors, (213), 213 states have call predecessors, (213), 213 states have call successors, (213) [2022-11-20 20:27:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1064 transitions. [2022-11-20 20:27:18,343 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1064 transitions. Word has length 27 [2022-11-20 20:27:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:18,343 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1064 transitions. [2022-11-20 20:27:18,344 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:27:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1064 transitions. [2022-11-20 20:27:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:27:18,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:18,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:18,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:27:18,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash 480786357, now seen corresponding path program 1 times [2022-11-20 20:27:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:18,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693381155] [2022-11-20 20:27:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:27:18,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:18,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693381155] [2022-11-20 20:27:18,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693381155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:18,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303390890] [2022-11-20 20:27:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:18,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:18,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:18,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:27:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:19,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:19,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:19,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:19,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303390890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:19,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:19,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:27:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007172462] [2022-11-20 20:27:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:19,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:19,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:19,142 INFO L87 Difference]: Start difference. First operand 783 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:27:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:20,120 INFO L93 Difference]: Finished difference Result 1688 states and 2333 transitions. [2022-11-20 20:27:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:20,121 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 20:27:20,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:20,128 INFO L225 Difference]: With dead ends: 1688 [2022-11-20 20:27:20,128 INFO L226 Difference]: Without dead ends: 915 [2022-11-20 20:27:20,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:20,132 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 138 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 986 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:27:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-20 20:27:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 798. [2022-11-20 20:27:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 490 states have (on average 1.3224489795918368) internal successors, (648), 505 states have internal predecessors, (648), 223 states have call successors, (223), 85 states have call predecessors, (223), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-20 20:27:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1088 transitions. [2022-11-20 20:27:20,207 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1088 transitions. Word has length 28 [2022-11-20 20:27:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:20,208 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1088 transitions. [2022-11-20 20:27:20,208 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:27:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1088 transitions. [2022-11-20 20:27:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 20:27:20,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:20,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:20,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:20,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 460886388, now seen corresponding path program 1 times [2022-11-20 20:27:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:20,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832733468] [2022-11-20 20:27:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:20,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:20,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832733468] [2022-11-20 20:27:20,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832733468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:20,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039088665] [2022-11-20 20:27:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:20,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:20,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:27:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:21,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:21,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:27:21,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:21,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039088665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:21,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:21,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 20:27:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131020258] [2022-11-20 20:27:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:21,101 INFO L87 Difference]: Start difference. First operand 798 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:21,614 INFO L93 Difference]: Finished difference Result 800 states and 1089 transitions. [2022-11-20 20:27:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:21,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-20 20:27:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:21,619 INFO L225 Difference]: With dead ends: 800 [2022-11-20 20:27:21,619 INFO L226 Difference]: Without dead ends: 797 [2022-11-20 20:27:21,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:21,621 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 513 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:21,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 473 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:27:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-20 20:27:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2022-11-20 20:27:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 490 states have (on average 1.3204081632653062) internal successors, (647), 504 states have internal predecessors, (647), 222 states have call successors, (222), 85 states have call predecessors, (222), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-20 20:27:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1086 transitions. [2022-11-20 20:27:21,689 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1086 transitions. Word has length 34 [2022-11-20 20:27:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:21,689 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1086 transitions. [2022-11-20 20:27:21,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1086 transitions. [2022-11-20 20:27:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 20:27:21,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:21,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:21,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:21,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1402275434, now seen corresponding path program 1 times [2022-11-20 20:27:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:21,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801169295] [2022-11-20 20:27:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:22,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:22,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801169295] [2022-11-20 20:27:22,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801169295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:22,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477585098] [2022-11-20 20:27:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:22,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:22,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:22,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:27:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:22,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:22,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:27:22,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:22,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477585098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:22,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:22,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 20:27:22,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097425751] [2022-11-20 20:27:22,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:22,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:22,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:22,600 INFO L87 Difference]: Start difference. First operand 797 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:23,175 INFO L93 Difference]: Finished difference Result 799 states and 1087 transitions. [2022-11-20 20:27:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-11-20 20:27:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:23,181 INFO L225 Difference]: With dead ends: 799 [2022-11-20 20:27:23,181 INFO L226 Difference]: Without dead ends: 796 [2022-11-20 20:27:23,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:23,183 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 510 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:23,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 471 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:27:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-20 20:27:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-11-20 20:27:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 490 states have (on average 1.3183673469387756) internal successors, (646), 503 states have internal predecessors, (646), 221 states have call successors, (221), 85 states have call predecessors, (221), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-20 20:27:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1084 transitions. [2022-11-20 20:27:23,256 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1084 transitions. Word has length 35 [2022-11-20 20:27:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:23,257 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1084 transitions. [2022-11-20 20:27:23,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1084 transitions. [2022-11-20 20:27:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:27:23,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:23,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:23,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 20:27:23,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash 520569655, now seen corresponding path program 1 times [2022-11-20 20:27:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:23,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80887939] [2022-11-20 20:27:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:23,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:23,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80887939] [2022-11-20 20:27:23,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80887939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:23,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363415194] [2022-11-20 20:27:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:23,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:23,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:23,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:23,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:27:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:24,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:24,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:27:24,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:24,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363415194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:24,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:24,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 20:27:24,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154377095] [2022-11-20 20:27:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:24,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:24,171 INFO L87 Difference]: Start difference. First operand 796 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:24,717 INFO L93 Difference]: Finished difference Result 798 states and 1085 transitions. [2022-11-20 20:27:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-11-20 20:27:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:24,728 INFO L225 Difference]: With dead ends: 798 [2022-11-20 20:27:24,728 INFO L226 Difference]: Without dead ends: 795 [2022-11-20 20:27:24,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:24,730 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 507 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:24,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 469 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:27:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-11-20 20:27:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-11-20 20:27:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 490 states have (on average 1.316326530612245) internal successors, (645), 502 states have internal predecessors, (645), 220 states have call successors, (220), 85 states have call predecessors, (220), 84 states have return successors, (217), 217 states have call predecessors, (217), 217 states have call successors, (217) [2022-11-20 20:27:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1082 transitions. [2022-11-20 20:27:24,852 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1082 transitions. Word has length 36 [2022-11-20 20:27:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:24,854 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1082 transitions. [2022-11-20 20:27:24,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1082 transitions. [2022-11-20 20:27:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 20:27:24,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:24,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:27:24,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:25,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 20:27:25,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1042500851, now seen corresponding path program 1 times [2022-11-20 20:27:25,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513997093] [2022-11-20 20:27:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:25,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513997093] [2022-11-20 20:27:25,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513997093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416238669] [2022-11-20 20:27:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:25,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:25,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:25,251 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:25,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:27:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:25,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:25,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:27:25,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:27:25,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416238669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:27:25,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:27:25,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 20:27:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334161622] [2022-11-20 20:27:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:27:25,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:27:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:27:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:27:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:25,743 INFO L87 Difference]: Start difference. First operand 795 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:27:26,578 INFO L93 Difference]: Finished difference Result 799 states and 1084 transitions. [2022-11-20 20:27:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:27:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-11-20 20:27:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:27:26,584 INFO L225 Difference]: With dead ends: 799 [2022-11-20 20:27:26,584 INFO L226 Difference]: Without dead ends: 775 [2022-11-20 20:27:26,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:27:26,586 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 450 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:27:26,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 846 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:27:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-20 20:27:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2022-11-20 20:27:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 477 states have (on average 1.3123689727463312) internal successors, (626), 487 states have internal predecessors, (626), 215 states have call successors, (215), 83 states have call predecessors, (215), 82 states have return successors, (214), 214 states have call predecessors, (214), 214 states have call successors, (214) [2022-11-20 20:27:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1055 transitions. [2022-11-20 20:27:26,666 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1055 transitions. Word has length 37 [2022-11-20 20:27:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:27:26,667 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 1055 transitions. [2022-11-20 20:27:26,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:27:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1055 transitions. [2022-11-20 20:27:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 20:27:26,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:27:26,669 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 20:27:26,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:27:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:26,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:27:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:27:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2044125463, now seen corresponding path program 1 times [2022-11-20 20:27:26,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:27:26,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094183767] [2022-11-20 20:27:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:27:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:27,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:27:27,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094183767] [2022-11-20 20:27:27,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094183767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:27:27,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234283415] [2022-11-20 20:27:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:27:27,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:27:27,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:27:27,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:27:27,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 20:27:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:27:27,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:27:27,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:27:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:27,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:27:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:27:27,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234283415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:27:27,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376944476] [2022-11-20 20:27:27,669 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-20 20:27:27,669 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:27:27,673 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:27:27,679 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:27:27,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:27:29,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 338 [2022-11-20 20:27:29,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 374 [2022-11-20 20:27:29,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:27:29,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 231 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 0 case distinctions, treesize of input 1079 treesize of output 922 [2022-11-20 20:27:36,826 INFO L217 Elim1Store]: Index analysis took 123 ms [2022-11-20 20:27:39,386 INFO L321 Elim1Store]: treesize reduction 600, result has 47.4 percent of original size [2022-11-20 20:27:39,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1771 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 60 case distinctions, treesize of input 307 treesize of output 726 [2022-11-20 20:27:40,439 INFO L217 Elim1Store]: Index analysis took 179 ms [2022-11-20 20:27:44,079 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-11-20 20:27:44,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-11-20 20:27:56,295 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-11-20 20:27:56,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-11-20 20:27:57,688 INFO L217 Elim1Store]: Index analysis took 138 ms [2022-11-20 20:28:01,290 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-11-20 20:28:01,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339 [2022-11-20 20:28:33,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:28:33,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:28:50,264 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-11-20 20:28:50,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-11-20 20:28:51,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1831 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 0 case distinctions, treesize of input 307 treesize of output 486 [2022-11-20 20:29:01,397 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-11-20 20:29:01,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-11-20 20:29:02,624 INFO L217 Elim1Store]: Index analysis took 123 ms [2022-11-20 20:29:05,902 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-11-20 20:29:05,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339 [2022-11-20 20:29:34,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:29:34,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:29:34,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:29:34,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:29:45,693 INFO L197 IcfgInterpreter]: Interpreting procedure put_disk with input of size 178 for LOIs [2022-11-20 20:29:45,710 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 224 for LOIs [2022-11-20 20:29:45,742 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:29:56,749 WARN L233 SmtUtils]: Spent 10.90s on a formula simplification that was a NOOP. DAG size: 1222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:08,174 WARN L233 SmtUtils]: Spent 11.27s on a formula simplification that was a NOOP. DAG size: 1235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:19,781 WARN L233 SmtUtils]: Spent 11.40s on a formula simplification that was a NOOP. DAG size: 1237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:31,314 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification that was a NOOP. DAG size: 1225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:42,999 WARN L233 SmtUtils]: Spent 11.40s on a formula simplification that was a NOOP. DAG size: 1238 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:54,270 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification that was a NOOP. DAG size: 1240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:05,339 WARN L233 SmtUtils]: Spent 10.71s on a formula simplification that was a NOOP. DAG size: 1228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:47,823 WARN L233 SmtUtils]: Spent 10.57s on a formula simplification that was a NOOP. DAG size: 1225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:47,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [376944476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:47,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:31:47,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2022-11-20 20:31:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029807799] [2022-11-20 20:31:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 20:31:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 20:31:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 20:31:47,831 INFO L87 Difference]: Start difference. First operand 775 states and 1055 transitions. Second operand has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 20:32:12,782 WARN L233 SmtUtils]: Spent 23.41s on a formula simplification. DAG size of input: 1254 DAG size of output: 1241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:35,711 WARN L233 SmtUtils]: Spent 22.47s on a formula simplification. DAG size of input: 1252 DAG size of output: 1249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:59,437 WARN L233 SmtUtils]: Spent 23.42s on a formula simplification. DAG size of input: 1255 DAG size of output: 1252 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:30,956 WARN L233 SmtUtils]: Spent 30.35s on a formula simplification. DAG size of input: 1402 DAG size of output: 1266 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:01,045 WARN L233 SmtUtils]: Spent 29.69s on a formula simplification. DAG size of input: 1362 DAG size of output: 1273 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:26,811 WARN L233 SmtUtils]: Spent 25.35s on a formula simplification. DAG size of input: 1265 DAG size of output: 1264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:52,187 WARN L233 SmtUtils]: Spent 25.06s on a formula simplification. DAG size of input: 1299 DAG size of output: 1298 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:35:17,409 WARN L233 SmtUtils]: Spent 24.79s on a formula simplification. DAG size of input: 1280 DAG size of output: 1265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:35:44,477 WARN L233 SmtUtils]: Spent 26.69s on a formula simplification. DAG size of input: 1310 DAG size of output: 1262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:36:11,539 WARN L233 SmtUtils]: Spent 26.63s on a formula simplification. DAG size of input: 1306 DAG size of output: 1258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:36:41,255 WARN L233 SmtUtils]: Spent 29.20s on a formula simplification. DAG size of input: 1311 DAG size of output: 1260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:37:11,456 WARN L233 SmtUtils]: Spent 29.63s on a formula simplification. DAG size of input: 1322 DAG size of output: 1271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:37:36,428 WARN L233 SmtUtils]: Spent 24.27s on a formula simplification. DAG size of input: 1229 DAG size of output: 1228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:00,983 WARN L233 SmtUtils]: Spent 23.20s on a formula simplification. DAG size of input: 1247 DAG size of output: 1246 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:24,107 WARN L233 SmtUtils]: Spent 22.71s on a formula simplification. DAG size of input: 1258 DAG size of output: 1257 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:38:47,373 WARN L233 SmtUtils]: Spent 22.93s on a formula simplification. DAG size of input: 1250 DAG size of output: 1249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:11,131 WARN L233 SmtUtils]: Spent 23.24s on a formula simplification. DAG size of input: 1252 DAG size of output: 1251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:39:35,562 WARN L233 SmtUtils]: Spent 23.84s on a formula simplification. DAG size of input: 1255 DAG size of output: 1254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:40:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:40:00,160 INFO L93 Difference]: Finished difference Result 1845 states and 2498 transitions. [2022-11-20 20:40:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 20:40:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2022-11-20 20:40:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:40:00,168 INFO L225 Difference]: With dead ends: 1845 [2022-11-20 20:40:00,168 INFO L226 Difference]: Without dead ends: 1067 [2022-11-20 20:40:00,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 583.7s TimeCoverageRelationStatistics Valid=369, Invalid=2181, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 20:40:00,173 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 503 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:40:00,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2264 Invalid, 2287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 30.0s Time] [2022-11-20 20:40:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-20 20:40:00,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1051. [2022-11-20 20:40:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 644 states have (on average 1.296583850931677) internal successors, (835), 658 states have internal predecessors, (835), 291 states have call successors, (291), 117 states have call predecessors, (291), 115 states have return successors, (290), 289 states have call predecessors, (290), 290 states have call successors, (290) [2022-11-20 20:40:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1416 transitions. [2022-11-20 20:40:00,557 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1416 transitions. Word has length 53 [2022-11-20 20:40:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:40:00,558 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1416 transitions. [2022-11-20 20:40:00,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 20:40:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1416 transitions. [2022-11-20 20:40:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 20:40:00,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:40:00,561 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 20:40:00,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 20:40:00,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:00,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:40:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:40:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2036934751, now seen corresponding path program 1 times [2022-11-20 20:40:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:40:00,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699783034] [2022-11-20 20:40:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:00,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:40:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:40:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:40:00,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:40:00,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699783034] [2022-11-20 20:40:00,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699783034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:40:00,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200036876] [2022-11-20 20:40:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:40:00,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:40:00,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:40:00,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:40:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d2fc8-b884-47a3-8b31-837714b172fd/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 20:40:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:40:01,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:40:01,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:40:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:40:01,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:40:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:40:01,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200036876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:40:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225397982] [2022-11-20 20:40:01,410 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2022-11-20 20:40:01,411 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:40:01,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:40:01,411 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:40:01,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:40:02,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 338 [2022-11-20 20:40:02,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:40:02,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 231 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 0 case distinctions, treesize of input 1079 treesize of output 922 [2022-11-20 20:40:02,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 374 [2022-11-20 20:40:10,734 INFO L321 Elim1Store]: treesize reduction 600, result has 47.4 percent of original size [2022-11-20 20:40:10,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 60 select indices, 60 select index equivalence classes, 1771 disjoint index pairs (out of 1770 index pairs), introduced 60 new quantified variables, introduced 60 case distinctions, treesize of input 307 treesize of output 726 [2022-11-20 20:40:11,668 INFO L217 Elim1Store]: Index analysis took 123 ms [2022-11-20 20:40:15,062 INFO L321 Elim1Store]: treesize reduction 1080, result has 33.4 percent of original size [2022-11-20 20:40:15,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 62 select indices, 62 select index equivalence classes, 1831 disjoint index pairs (out of 1891 index pairs), introduced 62 new quantified variables, introduced 120 case distinctions, treesize of input 317 treesize of output 737 [2022-11-20 20:40:25,952 INFO L321 Elim1Store]: treesize reduction 1330, result has 18.9 percent of original size [2022-11-20 20:40:25,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 61 select indices, 61 select index equivalence classes, 1771 disjoint index pairs (out of 1830 index pairs), introduced 61 new quantified variables, introduced 121 case distinctions, treesize of input 6263 treesize of output 6329 [2022-11-20 20:40:27,276 INFO L217 Elim1Store]: Index analysis took 118 ms [2022-11-20 20:40:30,720 INFO L321 Elim1Store]: treesize reduction 1818, result has 14.9 percent of original size [2022-11-20 20:40:30,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 63 select indices, 63 select index equivalence classes, 1831 disjoint index pairs (out of 1953 index pairs), introduced 63 new quantified variables, introduced 183 case distinctions, treesize of input 6266 treesize of output 6339