./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/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_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/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 32bit --witnessprinter.graph.data.programhash 791fd4c1f54f973c646b3f11f7eb2f654eca269cacf7e504443ee0d13fbe9694 --- 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 20:55:29,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:55:29,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:55:29,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:55:29,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:55:29,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:55:29,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:55:29,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:55:29,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:55:29,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:55:29,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:55:29,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:55:29,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:55:29,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:55:29,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:55:29,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:55:29,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:55:29,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:55:29,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:55:29,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:55:29,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:55:29,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:55:29,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:55:29,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:55:29,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:55:29,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:55:29,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:55:29,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:55:29,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:55:29,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:55:29,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:55:29,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:55:29,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:55:29,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:55:29,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:55:29,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:55:29,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:55:29,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:55:29,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:55:29,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:55:29,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:55:29,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:55:29,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:55:29,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:55:29,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:55:29,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:55:29,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:55:29,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:55:29,133 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:55:29,134 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:55:29,134 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:55:29,134 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:55:29,134 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:55:29,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:55:29,135 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:55:29,135 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:55:29,135 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:55:29,136 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:55:29,136 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:55:29,136 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:55:29,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:55:29,137 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:55:29,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:55:29,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:55:29,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:55:29,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:55:29,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:55:29,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:55:29,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:55:29,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:55:29,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:55:29,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:55:29,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:55:29,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:55:29,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:55:29,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:55:29,141 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:55:29,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:55:29,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:55:29,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:55:29,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:55:29,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:55:29,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:55:29,142 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_16834185-3fc5-452e-a810-714151b7173d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 791fd4c1f54f973c646b3f11f7eb2f654eca269cacf7e504443ee0d13fbe9694 [2022-11-20 20:55:29,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:55:29,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:55:29,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:55:29,502 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:55:29,503 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:55:29,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2022-11-20 20:55:32,571 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:55:33,027 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:55:33,033 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2022-11-20 20:55:33,068 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data/0d83a5023/65db10d157964173af88cd080efe9e02/FLAGe4f448741 [2022-11-20 20:55:33,089 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data/0d83a5023/65db10d157964173af88cd080efe9e02 [2022-11-20 20:55:33,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:55:33,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:55:33,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:55:33,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:55:33,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:55:33,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:33" (1/1) ... [2022-11-20 20:55:33,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565b1dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:33, skipping insertion in model container [2022-11-20 20:55:33,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:33" (1/1) ... [2022-11-20 20:55:33,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:55:33,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:55:33,743 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_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-11-20 20:55:34,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:55:34,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:55:34,137 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_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-11-20 20:55:34,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:55:34,290 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:55:34,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34 WrapperNode [2022-11-20 20:55:34,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:55:34,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:55:34,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:55:34,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:55:34,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,461 INFO L138 Inliner]: procedures = 109, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1084 [2022-11-20 20:55:34,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:55:34,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:55:34,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:55:34,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:55:34,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:55:34,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:55:34,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:55:34,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:55:34,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (1/1) ... [2022-11-20 20:55:34,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:55:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:55:34,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:55:34,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:55:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-11-20 20:55:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-11-20 20:55:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:55:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:55:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:55:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:55:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-20 20:55:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-20 20:55:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:55:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-20 20:55:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-20 20:55:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-20 20:55:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-20 20:55:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:55:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:55:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:55:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:55:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-20 20:55:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-20 20:55:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-11-20 20:55:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-11-20 20:55:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:55:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:55:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:55:34,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:55:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:55:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:55:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-11-20 20:55:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-11-20 20:55:35,174 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:55:35,176 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:55:35,245 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,286 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-11-20 20:55:35,286 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-11-20 20:55:35,370 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,372 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,374 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,380 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,383 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,389 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:35,391 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 20:55:38,127 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume false; [2022-11-20 20:55:38,128 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume !false; [2022-11-20 20:55:38,128 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2022-11-20 20:55:38,128 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2022-11-20 20:55:38,128 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-11-20 20:55:38,128 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-11-20 20:55:38,129 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-11-20 20:55:38,129 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-11-20 20:55:38,129 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-11-20 20:55:38,129 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume !false; [2022-11-20 20:55:38,129 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-11-20 20:55:38,130 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##156: assume false; [2022-11-20 20:55:38,130 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##114: assume !false; [2022-11-20 20:55:38,130 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume false; [2022-11-20 20:55:38,156 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:55:38,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:55:38,653 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:55:38,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:38 BoogieIcfgContainer [2022-11-20 20:55:38,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:55:38,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:55:38,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:55:38,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:55:38,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:55:33" (1/3) ... [2022-11-20 20:55:38,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7e3e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:38, skipping insertion in model container [2022-11-20 20:55:38,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:34" (2/3) ... [2022-11-20 20:55:38,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7e3e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:38, skipping insertion in model container [2022-11-20 20:55:38,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:38" (3/3) ... [2022-11-20 20:55:38,666 INFO L112 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-11-20 20:55:38,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:55:38,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:55:38,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:55:38,742 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;@445cd5ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:55:38,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:55:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 126 states have internal predecessors, (175), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 20:55:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:55:38,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:38,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:38,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:38,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1730859452, now seen corresponding path program 1 times [2022-11-20 20:55:38,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:38,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184517767] [2022-11-20 20:55:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:39,447 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 20:55:39,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:39,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184517767] [2022-11-20 20:55:39,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184517767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:39,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:39,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:55:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877921543] [2022-11-20 20:55:39,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:39,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:55:39,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:55:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:55:39,529 INFO L87 Difference]: Start difference. First operand has 146 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 126 states have internal predecessors, (175), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 20:55:41,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:43,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:43,802 INFO L93 Difference]: Finished difference Result 249 states and 394 transitions. [2022-11-20 20:55:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:55:43,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 11 [2022-11-20 20:55:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:43,814 INFO L225 Difference]: With dead ends: 249 [2022-11-20 20:55:43,814 INFO L226 Difference]: Without dead ends: 142 [2022-11-20 20:55:43,818 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 20:55:43,821 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 97 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:43,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 262 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 20:55:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-20 20:55:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-20 20:55:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 106 states have (on average 1.5) internal successors, (159), 122 states have internal predecessors, (159), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:55:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2022-11-20 20:55:43,875 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 11 [2022-11-20 20:55:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:43,875 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2022-11-20 20:55:43,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 20:55:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2022-11-20 20:55:43,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 20:55:43,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:43,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:55:43,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash 565032555, now seen corresponding path program 1 times [2022-11-20 20:55:43,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:43,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613715095] [2022-11-20 20:55:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:44,451 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 20:55:44,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:44,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613715095] [2022-11-20 20:55:44,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613715095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:44,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:44,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:55:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555837305] [2022-11-20 20:55:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:44,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:55:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:55:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:55:44,463 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 20:55:46,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:48,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:50,233 INFO L93 Difference]: Finished difference Result 280 states and 400 transitions. [2022-11-20 20:55:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:55:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 13 [2022-11-20 20:55:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:50,236 INFO L225 Difference]: With dead ends: 280 [2022-11-20 20:55:50,236 INFO L226 Difference]: Without dead ends: 142 [2022-11-20 20:55:50,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:55:50,238 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:50,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 508 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 20:55:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-20 20:55:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-20 20:55:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 106 states have (on average 1.490566037735849) internal successors, (158), 122 states have internal predecessors, (158), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:55:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 202 transitions. [2022-11-20 20:55:50,254 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 202 transitions. Word has length 13 [2022-11-20 20:55:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:50,254 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 202 transitions. [2022-11-20 20:55:50,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 20:55:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 202 transitions. [2022-11-20 20:55:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:55:50,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:50,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:50,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:55:50,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:50,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:50,257 INFO L85 PathProgramCache]: Analyzing trace with hash 46535799, now seen corresponding path program 1 times [2022-11-20 20:55:50,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:50,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083927501] [2022-11-20 20:55:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:50,518 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 20:55:50,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:50,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083927501] [2022-11-20 20:55:50,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083927501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:50,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:50,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:55:50,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092719726] [2022-11-20 20:55:50,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:50,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:55:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:55:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:55:50,526 INFO L87 Difference]: Start difference. First operand 142 states and 202 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, (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 20:55:52,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:54,416 INFO L93 Difference]: Finished difference Result 216 states and 299 transitions. [2022-11-20 20:55:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:55:54,417 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, (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 14 [2022-11-20 20:55:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:54,419 INFO L225 Difference]: With dead ends: 216 [2022-11-20 20:55:54,419 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 20:55:54,419 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 20:55:54,420 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:54,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 219 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 20:55:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 20:55:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 154. [2022-11-20 20:55:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.4) internal successors, (168), 129 states have internal predecessors, (168), 26 states have call successors, (26), 11 states have call predecessors, (26), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-20 20:55:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 212 transitions. [2022-11-20 20:55:54,441 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 212 transitions. Word has length 14 [2022-11-20 20:55:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:54,441 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 212 transitions. [2022-11-20 20:55:54,442 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, (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 20:55:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 212 transitions. [2022-11-20 20:55:54,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:55:54,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:54,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:55:54,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1245357136, now seen corresponding path program 1 times [2022-11-20 20:55:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:54,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358831202] [2022-11-20 20:55:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:54,708 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 20:55:54,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358831202] [2022-11-20 20:55:54,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358831202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:54,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:54,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:55:54,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945921880] [2022-11-20 20:55:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:54,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:55:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:55:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:55:54,713 INFO L87 Difference]: Start difference. First operand 154 states and 212 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:55:56,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:55:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:57,897 INFO L93 Difference]: Finished difference Result 247 states and 333 transitions. [2022-11-20 20:55:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:55:57,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17 [2022-11-20 20:55:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:57,899 INFO L225 Difference]: With dead ends: 247 [2022-11-20 20:55:57,899 INFO L226 Difference]: Without dead ends: 189 [2022-11-20 20:55:57,900 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 20:55:57,901 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 152 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:57,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 220 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 20:55:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-20 20:55:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2022-11-20 20:55:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 136 states have (on average 1.375) internal successors, (187), 142 states have internal predecessors, (187), 22 states have call successors, (22), 11 states have call predecessors, (22), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:55:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 226 transitions. [2022-11-20 20:55:57,931 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 226 transitions. Word has length 17 [2022-11-20 20:55:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:57,931 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 226 transitions. [2022-11-20 20:55:57,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:55:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 226 transitions. [2022-11-20 20:55:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 20:55:57,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:57,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:55:57,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:55:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1118642249, now seen corresponding path program 1 times [2022-11-20 20:55:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:57,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761251568] [2022-11-20 20:55:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:58,428 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 20:55:58,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:58,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761251568] [2022-11-20 20:55:58,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761251568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:58,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:58,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:55:58,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276478687] [2022-11-20 20:55:58,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:58,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:55:58,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:55:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:55:58,431 INFO L87 Difference]: Start difference. First operand 167 states and 226 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 20:56:00,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:01,693 INFO L93 Difference]: Finished difference Result 190 states and 252 transitions. [2022-11-20 20:56:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:01,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2022-11-20 20:56:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:01,696 INFO L225 Difference]: With dead ends: 190 [2022-11-20 20:56:01,696 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 20:56:01,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:01,703 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 264 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:01,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 151 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 135 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 20:56:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 20:56:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 172. [2022-11-20 20:56:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 147 states have internal predecessors, (193), 22 states have call successors, (22), 11 states have call predecessors, (22), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 232 transitions. [2022-11-20 20:56:01,724 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 232 transitions. Word has length 19 [2022-11-20 20:56:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:01,725 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 232 transitions. [2022-11-20 20:56:01,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 20:56:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 232 transitions. [2022-11-20 20:56:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:56:01,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:01,727 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] [2022-11-20 20:56:01,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:56:01,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -89251663, now seen corresponding path program 1 times [2022-11-20 20:56:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:01,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761291389] [2022-11-20 20:56:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:02,196 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 20:56:02,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761291389] [2022-11-20 20:56:02,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761291389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:02,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:02,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037254216] [2022-11-20 20:56:02,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:02,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:02,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:02,201 INFO L87 Difference]: Start difference. First operand 172 states and 232 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 20:56:04,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:06,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:07,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:07,089 INFO L93 Difference]: Finished difference Result 190 states and 251 transitions. [2022-11-20 20:56:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:07,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 20 [2022-11-20 20:56:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:07,091 INFO L225 Difference]: With dead ends: 190 [2022-11-20 20:56:07,091 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 20:56:07,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:07,092 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 260 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:07,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 155 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-20 20:56:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 20:56:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 173. [2022-11-20 20:56:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 142 states have (on average 1.3661971830985915) internal successors, (194), 148 states have internal predecessors, (194), 22 states have call successors, (22), 11 states have call predecessors, (22), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 233 transitions. [2022-11-20 20:56:07,110 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 233 transitions. Word has length 20 [2022-11-20 20:56:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:07,110 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 233 transitions. [2022-11-20 20:56:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 20:56:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 233 transitions. [2022-11-20 20:56:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:56:07,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:07,112 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] [2022-11-20 20:56:07,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:56:07,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1666612370, now seen corresponding path program 1 times [2022-11-20 20:56:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:07,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7924142] [2022-11-20 20:56:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:07,338 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 20:56:07,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:07,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7924142] [2022-11-20 20:56:07,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7924142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:07,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:07,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970560964] [2022-11-20 20:56:07,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:07,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:07,341 INFO L87 Difference]: Start difference. First operand 173 states and 233 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20:56:09,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:11,917 INFO L93 Difference]: Finished difference Result 176 states and 235 transitions. [2022-11-20 20:56:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20 [2022-11-20 20:56:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:11,920 INFO L225 Difference]: With dead ends: 176 [2022-11-20 20:56:11,920 INFO L226 Difference]: Without dead ends: 172 [2022-11-20 20:56:11,920 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 20:56:11,921 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 13 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:11,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 235 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 20:56:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-20 20:56:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-20 20:56:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 142 states have (on average 1.352112676056338) internal successors, (192), 147 states have internal predecessors, (192), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 230 transitions. [2022-11-20 20:56:11,939 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 230 transitions. Word has length 20 [2022-11-20 20:56:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:11,939 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 230 transitions. [2022-11-20 20:56:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20:56:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 230 transitions. [2022-11-20 20:56:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 20:56:11,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:11,941 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 20:56:11,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:56:11,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:11,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1289747072, now seen corresponding path program 1 times [2022-11-20 20:56:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:11,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731025208] [2022-11-20 20:56:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:12,288 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 20:56:12,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:12,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731025208] [2022-11-20 20:56:12,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731025208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:12,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:12,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792783003] [2022-11-20 20:56:12,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:12,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:12,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:12,291 INFO L87 Difference]: Start difference. First operand 172 states and 230 transitions. Second operand has 4 states, 4 states have (on average 5.0) 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 20:56:14,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:15,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:16,636 INFO L93 Difference]: Finished difference Result 181 states and 239 transitions. [2022-11-20 20:56:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) 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 20:56:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:16,638 INFO L225 Difference]: With dead ends: 181 [2022-11-20 20:56:16,638 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 20:56:16,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:16,639 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 244 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:16,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 153 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 129 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 20:56:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 20:56:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-20 20:56:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 139 states have internal predecessors, (182), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 220 transitions. [2022-11-20 20:56:16,658 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 220 transitions. Word has length 21 [2022-11-20 20:56:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:16,658 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 220 transitions. [2022-11-20 20:56:16,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) 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 20:56:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 220 transitions. [2022-11-20 20:56:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 20:56:16,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:16,660 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 20:56:16,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:56:16,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash 16114463, now seen corresponding path program 1 times [2022-11-20 20:56:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:16,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748474343] [2022-11-20 20:56:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:17,008 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 20:56:17,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:17,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748474343] [2022-11-20 20:56:17,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748474343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:17,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:17,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581468552] [2022-11-20 20:56:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:17,012 INFO L87 Difference]: Start difference. First operand 164 states and 220 transitions. Second operand has 4 states, 4 states have (on average 6.5) 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 20:56:19,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:21,102 INFO L93 Difference]: Finished difference Result 212 states and 280 transitions. [2022-11-20 20:56:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) 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 20:56:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:21,104 INFO L225 Difference]: With dead ends: 212 [2022-11-20 20:56:21,104 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 20:56:21,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:21,105 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 189 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:21,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 205 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 20:56:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 20:56:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 164. [2022-11-20 20:56:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.3432835820895523) internal successors, (180), 139 states have internal predecessors, (180), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 218 transitions. [2022-11-20 20:56:21,124 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 218 transitions. Word has length 27 [2022-11-20 20:56:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:21,125 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 218 transitions. [2022-11-20 20:56:21,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) 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 20:56:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 218 transitions. [2022-11-20 20:56:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:56:21,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:21,126 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 20:56:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:56:21,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1278072314, now seen corresponding path program 1 times [2022-11-20 20:56:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:21,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11586490] [2022-11-20 20:56:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:21,601 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 20:56:21,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:21,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11586490] [2022-11-20 20:56:21,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11586490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:21,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:21,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:21,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885252875] [2022-11-20 20:56:21,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:21,605 INFO L87 Difference]: Start difference. First operand 164 states and 218 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 20:56:23,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:25,508 INFO L93 Difference]: Finished difference Result 197 states and 260 transitions. [2022-11-20 20:56:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 28 [2022-11-20 20:56:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:25,511 INFO L225 Difference]: With dead ends: 197 [2022-11-20 20:56:25,511 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 20:56:25,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:25,512 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 174 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:25,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 202 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 20:56:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 20:56:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-20 20:56:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.328358208955224) internal successors, (178), 139 states have internal predecessors, (178), 21 states have call successors, (21), 11 states have call predecessors, (21), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 216 transitions. [2022-11-20 20:56:25,546 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 216 transitions. Word has length 28 [2022-11-20 20:56:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:25,546 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 216 transitions. [2022-11-20 20:56:25,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 20:56:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 216 transitions. [2022-11-20 20:56:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:56:25,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:25,548 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] [2022-11-20 20:56:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:56:25,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1058665402, now seen corresponding path program 1 times [2022-11-20 20:56:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326700665] [2022-11-20 20:56:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:25,745 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 20:56:25,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:25,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326700665] [2022-11-20 20:56:25,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326700665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:25,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:25,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251711447] [2022-11-20 20:56:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:25,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:25,748 INFO L87 Difference]: Start difference. First operand 164 states and 216 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 20:56:27,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:28,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:28,724 INFO L93 Difference]: Finished difference Result 176 states and 231 transitions. [2022-11-20 20:56:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 29 [2022-11-20 20:56:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:28,726 INFO L225 Difference]: With dead ends: 176 [2022-11-20 20:56:28,726 INFO L226 Difference]: Without dead ends: 160 [2022-11-20 20:56:28,727 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 20:56:28,727 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 158 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:28,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 134 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 20:56:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-20 20:56:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-20 20:56:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 135 states have internal predecessors, (172), 20 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-11-20 20:56:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2022-11-20 20:56:28,749 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 29 [2022-11-20 20:56:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:28,749 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2022-11-20 20:56:28,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 20:56:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2022-11-20 20:56:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 20:56:28,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:28,751 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] [2022-11-20 20:56:28,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:56:28,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1016360206, now seen corresponding path program 1 times [2022-11-20 20:56:28,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:28,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112463169] [2022-11-20 20:56:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:29,038 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 20:56:29,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:29,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112463169] [2022-11-20 20:56:29,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112463169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:29,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:29,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:56:29,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388491489] [2022-11-20 20:56:29,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:29,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:29,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:29,041 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:56:31,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:32,874 INFO L93 Difference]: Finished difference Result 198 states and 247 transitions. [2022-11-20 20:56:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-11-20 20:56:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:32,876 INFO L225 Difference]: With dead ends: 198 [2022-11-20 20:56:32,876 INFO L226 Difference]: Without dead ends: 159 [2022-11-20 20:56:32,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:32,877 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 183 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:32,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 277 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 20:56:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-20 20:56:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2022-11-20 20:56:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 117 states have (on average 1.2905982905982907) internal successors, (151), 121 states have internal predecessors, (151), 18 states have call successors, (18), 10 states have call predecessors, (18), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 20:56:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 183 transitions. [2022-11-20 20:56:32,898 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 183 transitions. Word has length 31 [2022-11-20 20:56:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:32,898 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 183 transitions. [2022-11-20 20:56:32,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 20:56:32,899 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 183 transitions. [2022-11-20 20:56:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 20:56:32,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:32,900 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] [2022-11-20 20:56:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:56:32,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1532580384, now seen corresponding path program 1 times [2022-11-20 20:56:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:32,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351912145] [2022-11-20 20:56:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:33,329 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 20:56:33,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:33,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351912145] [2022-11-20 20:56:33,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351912145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:33,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:33,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315376646] [2022-11-20 20:56:33,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:33,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:33,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:33,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:33,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:33,331 INFO L87 Difference]: Start difference. First operand 144 states and 183 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 20:56:35,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:37,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:37,363 INFO L93 Difference]: Finished difference Result 179 states and 225 transitions. [2022-11-20 20:56:37,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:37,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 30 [2022-11-20 20:56:37,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:37,365 INFO L225 Difference]: With dead ends: 179 [2022-11-20 20:56:37,365 INFO L226 Difference]: Without dead ends: 110 [2022-11-20 20:56:37,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:37,366 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 182 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:37,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 212 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 125 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 20:56:37,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-20 20:56:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2022-11-20 20:56:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 80 states have internal predecessors, (101), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 20:56:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2022-11-20 20:56:37,383 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 30 [2022-11-20 20:56:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:37,383 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2022-11-20 20:56:37,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 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 20:56:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2022-11-20 20:56:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 20:56:37,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:37,385 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 20:56:37,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:56:37,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:37,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash -953634734, now seen corresponding path program 1 times [2022-11-20 20:56:37,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:37,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773453090] [2022-11-20 20:56:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:37,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:37,623 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 20:56:37,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:37,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773453090] [2022-11-20 20:56:37,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773453090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:37,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:37,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312399414] [2022-11-20 20:56:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:37,626 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:56:39,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:42,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:42,946 INFO L93 Difference]: Finished difference Result 130 states and 161 transitions. [2022-11-20 20:56:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-20 20:56:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:42,948 INFO L225 Difference]: With dead ends: 130 [2022-11-20 20:56:42,948 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 20:56:42,948 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 20:56:42,949 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:42,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 20:56:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 20:56:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-20 20:56:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 78 states have internal predecessors, (98), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 20:56:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2022-11-20 20:56:42,964 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 34 [2022-11-20 20:56:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:42,965 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2022-11-20 20:56:42,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:56:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2022-11-20 20:56:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 20:56:42,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:42,966 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 20:56:42,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:56:42,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1599381400, now seen corresponding path program 1 times [2022-11-20 20:56:42,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:42,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321417491] [2022-11-20 20:56:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:42,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:43,430 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 20:56:43,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321417491] [2022-11-20 20:56:43,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321417491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:43,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:43,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:56:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412687072] [2022-11-20 20:56:43,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:43,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:56:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:56:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:43,433 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 20:56:45,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:47,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:47,903 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2022-11-20 20:56:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 34 [2022-11-20 20:56:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:47,904 INFO L225 Difference]: With dead ends: 99 [2022-11-20 20:56:47,904 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 20:56:47,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:56:47,905 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 107 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:47,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 163 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 20:56:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 20:56:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-20 20:56:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 78 states have internal predecessors, (97), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 20:56:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2022-11-20 20:56:47,920 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 34 [2022-11-20 20:56:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:47,921 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2022-11-20 20:56:47,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 20:56:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2022-11-20 20:56:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 20:56:47,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:47,922 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 20:56:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 20:56:47,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1449297037, now seen corresponding path program 1 times [2022-11-20 20:56:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:47,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468028363] [2022-11-20 20:56:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:47,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:48,519 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 20:56:48,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468028363] [2022-11-20 20:56:48,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468028363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:48,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:48,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:56:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063135191] [2022-11-20 20:56:48,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:48,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:56:48,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:48,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:56:48,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:48,525 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:56:50,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:53,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:56:56,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:56,453 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2022-11-20 20:56:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:56:56,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-11-20 20:56:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:56,455 INFO L225 Difference]: With dead ends: 128 [2022-11-20 20:56:56,455 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 20:56:56,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:56,456 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:56,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 310 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 20:56:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 20:56:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-20 20:56:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 76 states have internal predecessors, (94), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 20:56:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2022-11-20 20:56:56,475 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 36 [2022-11-20 20:56:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:56,476 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2022-11-20 20:56:56,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:56:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2022-11-20 20:56:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 20:56:56,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:56,477 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 20:56:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 20:56:56,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:56:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1015744021, now seen corresponding path program 1 times [2022-11-20 20:56:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:56,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583999850] [2022-11-20 20:56:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:56,920 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 20:56:56,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:56,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583999850] [2022-11-20 20:56:56,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583999850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:56,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:56,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:56:56,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215229706] [2022-11-20 20:56:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:56,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:56:56,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:56:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:56,924 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 20:56:58,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:03,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:03,951 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2022-11-20 20:57:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:57:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 35 [2022-11-20 20:57:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:03,953 INFO L225 Difference]: With dead ends: 104 [2022-11-20 20:57:03,953 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 20:57:03,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:57:03,954 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 23 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:03,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 310 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 20:57:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 20:57:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-20 20:57:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 57 states have internal predecessors, (65), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:57:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2022-11-20 20:57:03,968 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 35 [2022-11-20 20:57:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:03,969 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2022-11-20 20:57:03,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 20:57:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2022-11-20 20:57:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 20:57:03,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:03,970 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, 1, 1, 1] [2022-11-20 20:57:03,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 20:57:03,971 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash -428885076, now seen corresponding path program 1 times [2022-11-20 20:57:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:03,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602525271] [2022-11-20 20:57:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:04,507 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 20:57:04,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:04,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602525271] [2022-11-20 20:57:04,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602525271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:04,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:04,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:57:04,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617205290] [2022-11-20 20:57:04,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:04,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:57:04,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:57:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:57:04,511 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 20:57:06,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:07,574 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2022-11-20 20:57:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:57:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-11-20 20:57:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:07,575 INFO L225 Difference]: With dead ends: 107 [2022-11-20 20:57:07,576 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 20:57:07,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:57:07,577 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 55 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:07,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 117 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 20:57:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 20:57:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-11-20 20:57:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 57 states have internal predecessors, (64), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:57:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-11-20 20:57:07,589 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 40 [2022-11-20 20:57:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:07,590 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-11-20 20:57:07,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 20:57:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-11-20 20:57:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 20:57:07,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:07,591 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, 1, 1, 1, 1] [2022-11-20 20:57:07,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 20:57:07,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:07,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:07,592 INFO L85 PathProgramCache]: Analyzing trace with hash -45397137, now seen corresponding path program 1 times [2022-11-20 20:57:07,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:07,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010589484] [2022-11-20 20:57:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:08,870 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 20:57:08,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:08,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010589484] [2022-11-20 20:57:08,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010589484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:08,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:08,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:57:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284905249] [2022-11-20 20:57:08,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:08,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:57:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:57:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:57:08,874 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 20:57:10,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:12,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:12,589 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2022-11-20 20:57:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:57:12,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-11-20 20:57:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:12,590 INFO L225 Difference]: With dead ends: 133 [2022-11-20 20:57:12,590 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 20:57:12,591 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 20:57:12,591 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:12,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 20:57:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 20:57:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-20 20:57:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 58 states have internal predecessors, (65), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:57:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-11-20 20:57:12,605 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 41 [2022-11-20 20:57:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:12,605 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-11-20 20:57:12,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 20:57:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-11-20 20:57:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 20:57:12,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:12,607 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, 1, 1, 1, 1, 1] [2022-11-20 20:57:12,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 20:57:12,607 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1339147194, now seen corresponding path program 1 times [2022-11-20 20:57:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643550878] [2022-11-20 20:57:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:13,690 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 20:57:13,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643550878] [2022-11-20 20:57:13,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643550878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:57:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132656735] [2022-11-20 20:57:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:13,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:13,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:13,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:57:13,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:57:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:14,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:57:14,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:57:14,988 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 20:57:14,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:57:14,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132656735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:14,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:57:14,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2022-11-20 20:57:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950454934] [2022-11-20 20:57:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:57:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:57:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:57:14,991 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 20:57:17,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:18,051 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2022-11-20 20:57:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:57:18,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-20 20:57:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:18,052 INFO L225 Difference]: With dead ends: 76 [2022-11-20 20:57:18,052 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 20:57:18,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:57:18,053 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 85 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:18,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 123 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 158 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 20:57:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 20:57:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-11-20 20:57:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 58 states have internal predecessors, (65), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:57:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-11-20 20:57:18,073 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 42 [2022-11-20 20:57:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:18,074 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-11-20 20:57:18,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 20:57:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-11-20 20:57:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 20:57:18,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:18,075 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, 1, 1, 1, 1] [2022-11-20 20:57:18,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:57:18,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:18,287 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1195445267, now seen corresponding path program 1 times [2022-11-20 20:57:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:18,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95966713] [2022-11-20 20:57:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:18,490 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 20:57:18,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:18,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95966713] [2022-11-20 20:57:18,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95966713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:18,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:18,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:57:18,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180297022] [2022-11-20 20:57:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:18,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:57:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:57:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:57:18,495 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 20:57:20,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:22,271 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-11-20 20:57:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:57:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-20 20:57:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:22,272 INFO L225 Difference]: With dead ends: 76 [2022-11-20 20:57:22,272 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 20:57:22,273 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 20:57:22,273 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:22,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 97 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 20:57:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 20:57:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-11-20 20:57:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 20:57:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-20 20:57:22,319 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 41 [2022-11-20 20:57:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:22,320 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-20 20:57:22,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 20:57:22,320 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-20 20:57:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 20:57:22,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:22,320 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, 1, 1, 1, 1, 1] [2022-11-20 20:57:22,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 20:57:22,321 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:22,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1833709769, now seen corresponding path program 1 times [2022-11-20 20:57:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508009042] [2022-11-20 20:57:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:22,521 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 20:57:22,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:22,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508009042] [2022-11-20 20:57:22,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508009042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:22,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:22,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:57:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239801897] [2022-11-20 20:57:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:22,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:57:22,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:57:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:57:22,525 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 20:57:24,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:26,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:26,254 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2022-11-20 20:57:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:57:26,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-20 20:57:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:26,256 INFO L225 Difference]: With dead ends: 121 [2022-11-20 20:57:26,256 INFO L226 Difference]: Without dead ends: 90 [2022-11-20 20:57:26,256 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 20:57:26,257 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:26,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 86 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 20:57:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-20 20:57:26,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2022-11-20 20:57:26,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 63 states have internal predecessors, (68), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 20:57:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2022-11-20 20:57:26,272 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 42 [2022-11-20 20:57:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:26,273 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2022-11-20 20:57:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 20:57:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2022-11-20 20:57:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 20:57:26,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:26,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:57:26,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 20:57:26,274 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2046456820, now seen corresponding path program 1 times [2022-11-20 20:57:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:26,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551365973] [2022-11-20 20:57:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:26,779 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 20:57:26,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:26,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551365973] [2022-11-20 20:57:26,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551365973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:26,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:26,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:57:26,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662237502] [2022-11-20 20:57:26,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:57:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:57:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:57:26,782 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 20:57:28,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:30,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:32,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:32,978 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2022-11-20 20:57:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:57:32,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-20 20:57:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:32,980 INFO L225 Difference]: With dead ends: 96 [2022-11-20 20:57:32,980 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 20:57:32,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:57:32,981 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 17 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:32,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 156 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 20:57:32,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 20:57:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2022-11-20 20:57:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:57:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-11-20 20:57:32,996 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 46 [2022-11-20 20:57:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:32,996 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-11-20 20:57:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 20:57:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-11-20 20:57:32,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 20:57:32,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:32,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:57:32,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 20:57:32,998 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash -143767182, now seen corresponding path program 1 times [2022-11-20 20:57:32,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:32,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710759145] [2022-11-20 20:57:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:33,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:34,124 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 20:57:34,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:34,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710759145] [2022-11-20 20:57:34,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710759145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:34,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:57:34,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 20:57:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398145867] [2022-11-20 20:57:34,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:57:34,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:57:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:57:34,126 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 20:57:36,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:38,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:40,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:43,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:43,956 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-11-20 20:57:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:57:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2022-11-20 20:57:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:43,957 INFO L225 Difference]: With dead ends: 77 [2022-11-20 20:57:43,958 INFO L226 Difference]: Without dead ends: 60 [2022-11-20 20:57:43,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:57:43,959 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 85 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:43,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 219 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 280 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-20 20:57:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-20 20:57:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-20 20:57:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:57:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2022-11-20 20:57:43,972 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 56 [2022-11-20 20:57:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:43,972 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2022-11-20 20:57:43,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 20:57:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2022-11-20 20:57:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 20:57:43,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:43,973 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, 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 20:57:43,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 20:57:43,974 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1603906980, now seen corresponding path program 1 times [2022-11-20 20:57:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:43,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579974295] [2022-11-20 20:57:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:45,377 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 20:57:45,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:45,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579974295] [2022-11-20 20:57:45,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579974295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:57:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896666360] [2022-11-20 20:57:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:45,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:45,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:57:45,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:57:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:47,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 20:57:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:57:47,166 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 20:57:47,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:57:47,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896666360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:47,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:57:47,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:57:47,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698455901] [2022-11-20 20:57:47,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:47,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:57:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:57:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:57:47,168 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 20:57:49,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:49,672 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2022-11-20 20:57:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:57:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-11-20 20:57:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:49,673 INFO L225 Difference]: With dead ends: 108 [2022-11-20 20:57:49,674 INFO L226 Difference]: Without dead ends: 61 [2022-11-20 20:57:49,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 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 20:57:49,674 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:49,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 20:57:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-20 20:57:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-20 20:57:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:57:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2022-11-20 20:57:49,688 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 59 [2022-11-20 20:57:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:49,689 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2022-11-20 20:57:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 20:57:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2022-11-20 20:57:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 20:57:49,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:49,690 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, 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 20:57:49,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:57:49,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 20:57:49,906 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:49,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash 371675837, now seen corresponding path program 1 times [2022-11-20 20:57:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:49,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183537736] [2022-11-20 20:57:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:51,203 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 20:57:51,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:51,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183537736] [2022-11-20 20:57:51,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183537736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:57:51,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100475766] [2022-11-20 20:57:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:51,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:51,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:57:51,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:57:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:52,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 20:57:52,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:57:52,649 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 20:57:52,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:57:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:57:52,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100475766] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:57:52,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:57:52,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2022-11-20 20:57:52,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211178424] [2022-11-20 20:57:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:52,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:57:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:57:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:57:52,754 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 20:57:54,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:57:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:57:56,268 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2022-11-20 20:57:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:57:56,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-11-20 20:57:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:57:56,270 INFO L225 Difference]: With dead ends: 108 [2022-11-20 20:57:56,270 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 20:57:56,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:57:56,271 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 25 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:57:56,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 108 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 20:57:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 20:57:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 20:57:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 20:57:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-11-20 20:57:56,286 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 60 [2022-11-20 20:57:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:57:56,287 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-11-20 20:57:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 20:57:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-11-20 20:57:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 20:57:56,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:57:56,288 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, 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 20:57:56,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 20:57:56,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:56,499 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:57:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:57:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2060201350, now seen corresponding path program 1 times [2022-11-20 20:57:56,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:57:56,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893011316] [2022-11-20 20:57:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:56,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:57:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:57:57,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:57,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893011316] [2022-11-20 20:57:57,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893011316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:57:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149322401] [2022-11-20 20:57:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:57,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:57,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:57:57,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:57:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:59,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 20:57:59,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:57:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:57:59,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:57:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:57:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149322401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:57:59,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [357071569] [2022-11-20 20:57:59,327 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-20 20:57:59,327 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:57:59,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:57:59,341 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:57:59,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:57:59,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:57:59,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:00,432 INFO L321 Elim1Store]: treesize reduction 776, result has 19.4 percent of original size [2022-11-20 20:58:00,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 47 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 206 [2022-11-20 20:58:16,840 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#devobj~0#1.base| 1) [2022-11-20 20:58:16,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:18,850 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base| 1) [2022-11-20 20:58:18,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:20,860 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| 1) [2022-11-20 20:58:20,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:22,865 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= ~pirp~0.base 1) [2022-11-20 20:58:22,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:24,871 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#devobj~0#1.base| |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base|) [2022-11-20 20:58:26,879 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |ULTIMATE.start_main_~#devobj~0#1.base| |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base|) [2022-11-20 20:58:28,886 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| |ULTIMATE.start_main_~#devobj~0#1.base|) [2022-11-20 20:58:30,890 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| |ULTIMATE.start_main_~#devobj~0#1.base|) [2022-11-20 20:58:32,897 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= ~pirp~0.base |ULTIMATE.start_main_~#devobj~0#1.base|) [2022-11-20 20:58:34,905 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ~pirp~0.base |ULTIMATE.start_main_~#devobj~0#1.base|) [2022-11-20 20:58:36,909 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base|) [2022-11-20 20:58:38,913 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base|) [2022-11-20 20:58:40,920 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= ~pirp~0.base |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base|) [2022-11-20 20:58:42,929 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= ~pirp~0.base |ULTIMATE.start_DriverEntry_#in~DriverObject#1.base|) [2022-11-20 20:58:44,936 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 36) 0) [2022-11-20 20:58:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:46,940 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 72 |ULTIMATE.start_main_~#stack~0#1.offset|) 0) [2022-11-20 20:58:46,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:48,948 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 1) 0) [2022-11-20 20:58:48,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:50,956 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 37) 0) [2022-11-20 20:58:50,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:52,969 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 73) 0) [2022-11-20 20:58:52,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:54,978 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 16 |ULTIMATE.start_main_~#stack~0#1.offset|) 0) [2022-11-20 20:58:54,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:56,982 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 52 |ULTIMATE.start_main_~#stack~0#1.offset|) 0) [2022-11-20 20:58:56,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:58:58,988 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 88 |ULTIMATE.start_main_~#stack~0#1.offset|) 0) [2022-11-20 20:58:58,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:00,993 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 8) 0) [2022-11-20 20:59:00,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:02,998 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 44 |ULTIMATE.start_main_~#stack~0#1.offset|) 0) [2022-11-20 20:59:02,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:05,008 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= 0 (+ |ULTIMATE.start_main_~#stack~0#1.offset| 80)) [2022-11-20 20:59:05,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:07,013 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 12) 0) [2022-11-20 20:59:07,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:09,021 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 48) 0) [2022-11-20 20:59:09,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:11,027 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 84 |ULTIMATE.start_main_~#stack~0#1.offset|) 0) [2022-11-20 20:59:11,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:13,035 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| ~pirp~0.base) [2022-11-20 20:59:15,041 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |ULTIMATE.start_main_~#stack~0#1.base| ~pirp~0.base) [2022-11-20 20:59:15,044 INFO L217 Elim1Store]: Index analysis took 60212 ms [2022-11-20 20:59:17,061 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| 1) 0)) [2022-11-20 20:59:19,067 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| 1) 0)) [2022-11-20 20:59:21,075 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| 1) 1) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 20:59:23,081 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| 1) 1) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 20:59:25,085 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#devobj~0#1.offset| (+ 44 |ULTIMATE.start_main_~#stack~0#1.offset|)) [2022-11-20 20:59:25,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:27,092 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 60)) [2022-11-20 20:59:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:29,101 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 12 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 20:59:29,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:31,107 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 84 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 20:59:33,111 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 84 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 20:59:35,115 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ |ULTIMATE.start_main_~#devobj~0#1.offset| 28)) [2022-11-20 20:59:35,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:37,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:39,035 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 84 |ULTIMATE.start_main_~#irp~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 20:59:39,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:41,040 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 12)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 20:59:43,044 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 12)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 20:59:45,049 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ 16 |ULTIMATE.start_main_~#devobj~0#1.offset|)) [2022-11-20 20:59:45,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:47,053 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 40 |ULTIMATE.start_main_~#devobj~0#1.offset|) 0) [2022-11-20 20:59:47,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:49,060 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#devobj~0#1.offset| 4) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 20:59:49,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:51,068 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 32 |ULTIMATE.start_main_~#stack~0#1.offset|) |ULTIMATE.start_main_~#devobj~0#1.offset|) [2022-11-20 20:59:51,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:53,075 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#devobj~0#1.offset| 39) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 20:59:53,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:55,081 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 3 |ULTIMATE.start_main_~#devobj~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 20:59:55,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:57,085 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#devobj~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 33)) [2022-11-20 20:59:57,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:59:59,093 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#devobj~0#1.offset| 24) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 20:59:59,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:01,099 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#devobj~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 12)) [2022-11-20 21:00:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:03,108 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 48) |ULTIMATE.start_main_~#devobj~0#1.offset|) [2022-11-20 21:00:03,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:05,112 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 32 |ULTIMATE.start_main_~#devobj~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:00:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:07,116 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 4) |ULTIMATE.start_main_~#devobj~0#1.offset|) [2022-11-20 21:00:07,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:09,120 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 40 |ULTIMATE.start_main_~#stack~0#1.offset|) |ULTIMATE.start_main_~#devobj~0#1.offset|) [2022-11-20 21:00:09,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:11,132 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 8) |ULTIMATE.start_main_~#devobj~0#1.offset|) [2022-11-20 21:00:11,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:13,136 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#devobj~0#1.offset| (+ 56 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:00:13,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:17,059 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#devobj~0#1.base|) (+ 40 |ULTIMATE.start_main_~#devobj~0#1.offset|)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:00:19,063 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#d~0#1.offset| 24) 0) [2022-11-20 21:00:19,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:21,071 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 12)) [2022-11-20 21:00:21,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:23,077 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 48)) [2022-11-20 21:00:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:25,086 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 23 |ULTIMATE.start_main_~#d~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:00:25,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:27,091 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 13) |ULTIMATE.start_main_~#d~0#1.offset|) [2022-11-20 21:00:27,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:29,094 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ 49 |ULTIMATE.start_main_~#stack~0#1.offset|)) [2022-11-20 21:00:29,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:31,100 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#d~0#1.offset| 8) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:00:31,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:33,108 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#stack~0#1.offset| 28) |ULTIMATE.start_main_~#d~0#1.offset|) [2022-11-20 21:00:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:35,119 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ 64 |ULTIMATE.start_main_~#stack~0#1.offset|)) [2022-11-20 21:00:35,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:37,128 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ |ULTIMATE.start_main_~#d~0#1.offset| 16) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:00:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:39,135 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 20)) [2022-11-20 21:00:39,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:41,141 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ 56 |ULTIMATE.start_main_~#stack~0#1.offset|)) [2022-11-20 21:00:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:43,150 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ |ULTIMATE.start_main_~#stack~0#1.offset| 24)) [2022-11-20 21:00:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:45,155 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#d~0#1.offset| (+ 72 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:00:45,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:47,164 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#d~0#1.base|) (+ |ULTIMATE.start_main_~#d~0#1.offset| 24))) [2022-11-20 21:00:49,167 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#d~0#1.base|) (+ |ULTIMATE.start_main_~#d~0#1.offset| 24))) [2022-11-20 21:00:51,171 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 44 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:00:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:53,175 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 52 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:00:55,180 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 52 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:00:57,186 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 23 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:00:57,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:00:59,193 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 73)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:01,199 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 73)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:03,202 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= 0 (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) [2022-11-20 21:01:03,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:05,205 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 60 |ULTIMATE.start_main_~#irp~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:01:05,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:07,214 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ |ULTIMATE.start_main_~#irp~0#1.offset| 24)) [2022-11-20 21:01:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:09,222 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 95 |ULTIMATE.start_main_~#irp~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:01:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:11,230 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 59 |ULTIMATE.start_main_~#irp~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:01:11,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:13,237 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ |ULTIMATE.start_main_~#irp~0#1.offset| 80)) [2022-11-20 21:01:13,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:15,247 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 8 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:01:15,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:17,252 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 88 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:01:17,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:19,256 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 52 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:01:19,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:21,260 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#stack~0#1.offset| (+ 16 |ULTIMATE.start_main_~#irp~0#1.offset|)) [2022-11-20 21:01:21,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:23,270 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ 48 |ULTIMATE.start_main_~#irp~0#1.offset|) |ULTIMATE.start_main_~#stack~0#1.offset|) [2022-11-20 21:01:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:01:25,282 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 88 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:01:27,288 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 88 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:01:29,302 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 36)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:31,307 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 36)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:33,313 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 80)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:35,318 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 80)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:37,323 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 44 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:01:39,328 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 44 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:01:41,333 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 1)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:43,337 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 1)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:45,344 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) |ULTIMATE.start_main_~#stack~0#1.offset|)) [2022-11-20 21:01:47,347 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) |ULTIMATE.start_main_~#stack~0#1.offset|)) [2022-11-20 21:01:49,351 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 8)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:51,360 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 8)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:01:53,364 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 16 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:01:55,373 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 16 |ULTIMATE.start_main_~#stack~0#1.offset|))) [2022-11-20 21:01:57,383 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 48))) [2022-11-20 21:01:59,388 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 48))) [2022-11-20 21:02:01,392 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 72 |ULTIMATE.start_main_~#stack~0#1.offset|)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:02:03,396 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ 72 |ULTIMATE.start_main_~#stack~0#1.offset|)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:02:05,402 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 37)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:02:07,409 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#stack~0#1.base|) (+ |ULTIMATE.start_main_~#stack~0#1.offset| 37)) (select (select |v_#memory_int_496| |ULTIMATE.start_main_~#irp~0#1.base|) (+ |ULTIMATE.start_main_~#irp~0#1.offset| 96))) [2022-11-20 21:02:07,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 162 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 172 [2022-11-20 21:02:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:21,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:22,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:22,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:23,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:23,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:23,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:23,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:24,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:24,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:25,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:25,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:27,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:27,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:30,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:32,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:32,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:33,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:35,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:35,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:36,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:36,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:37,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:38,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:38,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:39,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:39,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:40,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:40,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:40,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:40,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:40,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:41,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:41,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:41,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:41,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:41,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:02:41,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:02:41,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:02:41,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:02:41,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:02:41,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:02:41,735 INFO L217 Elim1Store]: Index analysis took 22657 ms [2022-11-20 21:02:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:42,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:43,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:43,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:43,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:44,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:44,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:44,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:44,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:45,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:45,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:46,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:46,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:46,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:47,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:47,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:48,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:48,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:48,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:48,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:48,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:49,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:49,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:50,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:50,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:50,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:51,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:51,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:51,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:52,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:52,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:52,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:53,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:53,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:53,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:53,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:54,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:54,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:55,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:55,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:56,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:56,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:57,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:57,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:57,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:57,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:58,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:58,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:59,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:59,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:59,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:02:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:00,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:01,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:01,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:01,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:02,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:03,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:03,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:03,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:04,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:04,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:04,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:04,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:05,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:05,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:05,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:06,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:06,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:07,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:08,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:08,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:09,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:09,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:03:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:09,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:09,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:09,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:10,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:10,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:10,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:11,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:11,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:11,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:12,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:12,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:13,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:13,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:13,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:13,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:14,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:14,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:14,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:15,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:15,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:16,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:16,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:16,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:17,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:17,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:18,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:19,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:19,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:20,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:21,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:21,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:21,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:22,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:22,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:23,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:23,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:23,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:24,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:24,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:25,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:25,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:25,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:25,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:26,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:26,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:26,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:27,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:27,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:27,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:27,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:27,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:28,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:28,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:29,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:29,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:29,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:30,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:31,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:32,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:32,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:32,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:32,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:03:32,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:21,735 WARN L233 SmtUtils]: Spent 2.81m on a formula simplification. DAG size of input: 131 DAG size of output: 83 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 21:06:21,737 INFO L321 Elim1Store]: treesize reduction 695, result has 24.0 percent of original size [2022-11-20 21:06:21,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 308 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 3809 treesize of output 1168 [2022-11-20 21:06:24,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:24,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,485 INFO L217 Elim1Store]: Index analysis took 1508 ms [2022-11-20 21:06:25,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:25,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:26,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:27,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:45,738 WARN L233 SmtUtils]: Spent 17.01s on a formula simplification. DAG size of input: 372 DAG size of output: 173 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 21:06:45,740 INFO L321 Elim1Store]: treesize reduction 3242, result has 12.1 percent of original size [2022-11-20 21:06:45,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 304 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 25 case distinctions, treesize of input 2728 treesize of output 997 [2022-11-20 21:06:46,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:46,942 INFO L217 Elim1Store]: Index analysis took 1038 ms [2022-11-20 21:06:51,030 INFO L321 Elim1Store]: treesize reduction 528, result has 8.5 percent of original size [2022-11-20 21:06:51,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 18 case distinctions, treesize of input 701 treesize of output 598 [2022-11-20 21:06:51,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:51,631 INFO L217 Elim1Store]: Index analysis took 499 ms [2022-11-20 21:06:54,569 INFO L321 Elim1Store]: treesize reduction 250, result has 16.4 percent of original size [2022-11-20 21:06:54,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 691 treesize of output 646 [2022-11-20 21:06:54,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:55,252 INFO L321 Elim1Store]: treesize reduction 52, result has 45.8 percent of original size [2022-11-20 21:06:55,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 65 [2022-11-20 21:06:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:55,701 INFO L321 Elim1Store]: treesize reduction 115, result has 35.0 percent of original size [2022-11-20 21:06:55,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 114 [2022-11-20 21:06:55,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:55,971 INFO L321 Elim1Store]: treesize reduction 52, result has 45.8 percent of original size [2022-11-20 21:06:55,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 105 [2022-11-20 21:06:56,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,197 INFO L321 Elim1Store]: treesize reduction 52, result has 45.8 percent of original size [2022-11-20 21:06:56,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 87 [2022-11-20 21:06:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 68 [2022-11-20 21:06:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 68 [2022-11-20 21:06:56,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:06:56,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-20 21:06:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:56,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 124 [2022-11-20 21:06:56,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:56,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-11-20 21:06:56,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:56,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:56,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 124 [2022-11-20 21:06:57,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:06:57,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 21:06:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-11-20 21:06:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 21:06:57,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:57,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-11-20 21:06:58,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:06:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 135 [2022-11-20 21:06:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:06:58,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 127 [2022-11-20 21:06:58,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 197 [2022-11-20 21:06:58,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:58,877 INFO L217 Elim1Store]: Index analysis took 155 ms [2022-11-20 21:06:58,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 197 [2022-11-20 21:06:59,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,218 INFO L217 Elim1Store]: Index analysis took 195 ms [2022-11-20 21:06:59,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 207 [2022-11-20 21:06:59,320 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:06:59,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,614 INFO L217 Elim1Store]: Index analysis took 217 ms [2022-11-20 21:06:59,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 136 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 210 [2022-11-20 21:06:59,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,814 INFO L217 Elim1Store]: Index analysis took 119 ms [2022-11-20 21:06:59,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 200 [2022-11-20 21:06:59,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:06:59,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,265 INFO L217 Elim1Store]: Index analysis took 300 ms [2022-11-20 21:07:00,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 136 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 205 [2022-11-20 21:07:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,516 INFO L217 Elim1Store]: Index analysis took 121 ms [2022-11-20 21:07:00,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 197 [2022-11-20 21:07:00,673 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:07:00,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:00,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,102 INFO L217 Elim1Store]: Index analysis took 287 ms [2022-11-20 21:07:01,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 207 [2022-11-20 21:07:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:07:01,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:01,499 INFO L217 Elim1Store]: Index analysis took 163 ms [2022-11-20 21:07:01,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 153 disjoint index pairs (out of 171 index pairs), introduced 18 new quantified variables, introduced 0 case distinctions, treesize of input 3995 treesize of output 3553 [2022-11-20 21:07:02,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:07:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:02,344 INFO L217 Elim1Store]: Index analysis took 237 ms [2022-11-20 21:07:02,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 153 disjoint index pairs (out of 171 index pairs), introduced 18 new quantified variables, introduced 0 case distinctions, treesize of input 5485 treesize of output 4413 [2022-11-20 21:07:03,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:03,261 INFO L217 Elim1Store]: Index analysis took 200 ms [2022-11-20 21:07:04,052 INFO L321 Elim1Store]: treesize reduction 1205, result has 8.4 percent of original size [2022-11-20 21:07:04,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 22 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 60 case distinctions, treesize of input 200 treesize of output 273 [2022-11-20 21:07:04,191 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-11-20 21:07:04,462 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5400 conjuctions. This might take some time... [2022-11-20 21:07:14,525 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 2400 conjuctions. [2022-11-20 21:07:14,730 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2022-11-20 21:07:14,986 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 5400 conjuctions. This might take some time... [2022-11-20 21:07:25,579 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 2400 conjuctions. [2022-11-20 21:07:26,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:26,955 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-20 21:07:26,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 260 [2022-11-20 21:07:28,028 INFO L321 Elim1Store]: treesize reduction 72, result has 38.5 percent of original size [2022-11-20 21:07:28,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 212 treesize of output 271 [2022-11-20 21:07:28,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 97 [2022-11-20 21:07:28,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:07:28,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:07:28,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:07:28,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-20 21:07:28,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:28,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-20 21:07:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:28,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-20 21:07:28,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:28,801 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-11-20 21:07:28,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 10 [2022-11-20 21:07:28,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:07:28,871 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-20 21:07:28,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 7 [2022-11-20 21:07:29,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:07:29,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:07:29,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 21:07:29,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-20 21:07:29,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-20 21:07:29,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:29,856 INFO L321 Elim1Store]: treesize reduction 169, result has 28.1 percent of original size [2022-11-20 21:07:29,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 214 treesize of output 560 [2022-11-20 21:07:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:29,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:07:30,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:07:30,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:07:30,131 INFO L217 Elim1Store]: Index analysis took 212 ms [2022-11-20 21:07:30,355 INFO L321 Elim1Store]: treesize reduction 137, result has 11.6 percent of original size [2022-11-20 21:07:30,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 232 treesize of output 524 [2022-11-20 21:07:30,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2022-11-20 21:07:30,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2022-11-20 21:07:30,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 36 [2022-11-20 21:07:30,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:30,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 88 [2022-11-20 21:07:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 193 [2022-11-20 21:07:31,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 45 [2022-11-20 21:07:31,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 904 treesize of output 768 [2022-11-20 21:07:31,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:07:31,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 604 treesize of output 464 [2022-11-20 21:07:31,658 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 21:07:31,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 21:07:31,894 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 21:07:31,898 INFO L158 Benchmark]: Toolchain (without parser) took 718801.98ms. Allocated memory was 142.6MB in the beginning and 534.8MB in the end (delta: 392.2MB). Free memory was 109.4MB in the beginning and 340.9MB in the end (delta: -231.4MB). Peak memory consumption was 392.2MB. Max. memory is 16.1GB. [2022-11-20 21:07:31,898 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 116.9MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:07:31,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1187.97ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 47.6MB in the end (delta: 61.3MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-20 21:07:31,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 178.49ms. Allocated memory is still 142.6MB. Free memory was 47.6MB in the beginning and 105.0MB in the end (delta: -57.4MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-11-20 21:07:31,899 INFO L158 Benchmark]: Boogie Preprocessor took 162.99ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 96.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 21:07:31,899 INFO L158 Benchmark]: RCFGBuilder took 4021.77ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 96.5MB in the beginning and 106.1MB in the end (delta: -9.5MB). Peak memory consumption was 98.3MB. Max. memory is 16.1GB. [2022-11-20 21:07:31,899 INFO L158 Benchmark]: TraceAbstraction took 713238.92ms. Allocated memory was 186.6MB in the beginning and 534.8MB in the end (delta: 348.1MB). Free memory was 106.1MB in the beginning and 340.9MB in the end (delta: -234.8MB). Peak memory consumption was 344.0MB. Max. memory is 16.1GB. [2022-11-20 21:07:31,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 116.9MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1187.97ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 47.6MB in the end (delta: 61.3MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 178.49ms. Allocated memory is still 142.6MB. Free memory was 47.6MB in the beginning and 105.0MB in the end (delta: -57.4MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 162.99ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 96.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4021.77ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 96.5MB in the beginning and 106.1MB in the end (delta: -9.5MB). Peak memory consumption was 98.3MB. Max. memory is 16.1GB. * TraceAbstraction took 713238.92ms. Allocated memory was 186.6MB in the beginning and 534.8MB in the end (delta: 348.1MB). Free memory was 106.1MB in the beginning and 340.9MB in the end (delta: -234.8MB). Peak memory consumption was 344.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 21:07:31,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/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_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/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 32bit --witnessprinter.graph.data.programhash 791fd4c1f54f973c646b3f11f7eb2f654eca269cacf7e504443ee0d13fbe9694 --- 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 21:07:34,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:07:34,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:07:34,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:07:34,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:07:34,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:07:34,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:07:34,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:07:34,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:07:34,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:07:34,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:07:34,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:07:34,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:07:34,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:07:34,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:07:34,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:07:34,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:07:34,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:07:34,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:07:34,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:07:34,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:07:34,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:07:34,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:07:34,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:07:34,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:07:34,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:07:34,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:07:34,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:07:34,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:07:34,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:07:34,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:07:34,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:07:34,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:07:34,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:07:34,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:07:34,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:07:34,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:07:34,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:07:34,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:07:34,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:07:34,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:07:34,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 21:07:34,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:07:34,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:07:34,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:07:34,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:07:34,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:07:34,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:07:34,266 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:07:34,266 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:07:34,266 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:07:34,266 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:07:34,267 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:07:34,267 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:07:34,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:07:34,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:07:34,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:07:34,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:07:34,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:07:34,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:07:34,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:07:34,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:07:34,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:07:34,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:07:34,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:07:34,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:07:34,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:07:34,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:07:34,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:07:34,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:07:34,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:07:34,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:34,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:07:34,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:07:34,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:07:34,273 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:07:34,273 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:07:34,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:07:34,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:07:34,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:07:34,274 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 791fd4c1f54f973c646b3f11f7eb2f654eca269cacf7e504443ee0d13fbe9694 [2022-11-20 21:07:34,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:07:34,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:07:34,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:07:34,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:07:34,646 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:07:34,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2022-11-20 21:07:37,661 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:07:38,106 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:07:38,107 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2022-11-20 21:07:38,132 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data/24dc162d9/4827bca9cbd1415ea47e3c19b67978c7/FLAGd1d6034a7 [2022-11-20 21:07:38,153 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/data/24dc162d9/4827bca9cbd1415ea47e3c19b67978c7 [2022-11-20 21:07:38,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:07:38,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:07:38,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:38,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:07:38,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:07:38,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:38" (1/1) ... [2022-11-20 21:07:38,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdd6455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:38, skipping insertion in model container [2022-11-20 21:07:38,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:07:38" (1/1) ... [2022-11-20 21:07:38,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:07:38,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:07:38,810 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_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-11-20 21:07:39,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:39,044 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 21:07:39,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:07:39,164 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_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-11-20 21:07:39,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:39,269 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:07:39,345 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_16834185-3fc5-452e-a810-714151b7173d/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-11-20 21:07:39,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:07:39,538 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:07:39,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39 WrapperNode [2022-11-20 21:07:39,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:07:39,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:07:39,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:07:39,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:07:39,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,622 INFO L138 Inliner]: procedures = 113, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1052 [2022-11-20 21:07:39,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:07:39,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:07:39,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:07:39,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:07:39,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:07:39,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:07:39,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:07:39,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:07:39,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (1/1) ... [2022-11-20 21:07:39,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:07:39,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:07:39,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:07:39,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:07:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-11-20 21:07:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-11-20 21:07:39,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 21:07:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 21:07:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 21:07:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 21:07:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-20 21:07:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-20 21:07:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 21:07:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-20 21:07:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-20 21:07:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 21:07:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-20 21:07:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-20 21:07:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:07:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:07:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:07:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:07:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-20 21:07:39,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-20 21:07:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-11-20 21:07:39,873 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-11-20 21:07:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 21:07:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:07:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 21:07:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:07:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 21:07:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 21:07:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 21:07:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:07:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:07:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-11-20 21:07:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-11-20 21:07:40,258 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:07:40,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:07:40,441 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,478 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-11-20 21:07:40,478 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-11-20 21:07:40,480 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,482 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,484 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,488 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,491 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,496 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:40,497 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume false; [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume !false; [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-11-20 21:07:48,872 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume !false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##156: assume false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##114: assume !false; [2022-11-20 21:07:48,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume false; [2022-11-20 21:07:48,924 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:07:48,945 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:07:48,946 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 21:07:48,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:07:48 BoogieIcfgContainer [2022-11-20 21:07:48,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:07:48,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:07:48,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:07:48,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:07:48,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:07:38" (1/3) ... [2022-11-20 21:07:48,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21328469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:07:48, skipping insertion in model container [2022-11-20 21:07:48,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:07:39" (2/3) ... [2022-11-20 21:07:48,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21328469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:07:48, skipping insertion in model container [2022-11-20 21:07:48,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:07:48" (3/3) ... [2022-11-20 21:07:48,961 INFO L112 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-11-20 21:07:48,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:07:48,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:07:49,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:07:49,067 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;@32713ff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:07:49,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:07:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 201 states have (on average 1.572139303482587) internal successors, (316), 219 states have internal predecessors, (316), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 21:07:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 21:07:49,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:49,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:49,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -660511916, now seen corresponding path program 1 times [2022-11-20 21:07:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:49,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247560097] [2022-11-20 21:07:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:49,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:49,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:07:49,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 21:07:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:49,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 21:07:49,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:49,727 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 21:07:49,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:49,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:49,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247560097] [2022-11-20 21:07:49,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247560097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:49,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:49,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:07:49,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097841436] [2022-11-20 21:07:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:49,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:07:49,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:49,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:07:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:07:49,774 INFO L87 Difference]: Start difference. First operand has 239 states, 201 states have (on average 1.572139303482587) internal successors, (316), 219 states have internal predecessors, (316), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 21:07:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:49,843 INFO L93 Difference]: Finished difference Result 472 states and 755 transitions. [2022-11-20 21:07:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:07:49,845 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 16 [2022-11-20 21:07:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:49,856 INFO L225 Difference]: With dead ends: 472 [2022-11-20 21:07:49,856 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 21:07:49,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:07:49,865 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:49,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:07:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 21:07:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-20 21:07:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 211 states have internal predecessors, (295), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:07:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 339 transitions. [2022-11-20 21:07:49,927 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 339 transitions. Word has length 16 [2022-11-20 21:07:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:49,927 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 339 transitions. [2022-11-20 21:07:49,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 21:07:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 339 transitions. [2022-11-20 21:07:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 21:07:49,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:49,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:07:49,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:50,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:50,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1247317930, now seen corresponding path program 1 times [2022-11-20 21:07:50,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816934651] [2022-11-20 21:07:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:50,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:50,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:50,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:07:50,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 21:07:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:50,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:07:50,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:50,772 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 21:07:50,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:50,773 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816934651] [2022-11-20 21:07:50,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816934651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:50,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:50,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:07:50,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145886709] [2022-11-20 21:07:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:50,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:07:50,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:50,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:07:50,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:07:50,778 INFO L87 Difference]: Start difference. First operand 231 states and 339 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 21:07:52,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:07:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:52,958 INFO L93 Difference]: Finished difference Result 248 states and 360 transitions. [2022-11-20 21:07:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:07:52,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16 [2022-11-20 21:07:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:52,962 INFO L225 Difference]: With dead ends: 248 [2022-11-20 21:07:52,962 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 21:07:52,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:07:52,964 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 249 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:52,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 737 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 21:07:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 21:07:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-20 21:07:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 195 states have (on average 1.5076923076923077) internal successors, (294), 211 states have internal predecessors, (294), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:07:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 338 transitions. [2022-11-20 21:07:52,990 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 338 transitions. Word has length 16 [2022-11-20 21:07:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:52,991 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 338 transitions. [2022-11-20 21:07:52,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 21:07:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 338 transitions. [2022-11-20 21:07:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 21:07:52,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:52,993 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 21:07:53,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:53,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:53,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:53,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1034619550, now seen corresponding path program 1 times [2022-11-20 21:07:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:53,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009212062] [2022-11-20 21:07:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:53,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:53,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:53,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:07:53,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 21:07:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:53,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:07:53,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:53,984 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 21:07:53,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:53,985 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:53,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009212062] [2022-11-20 21:07:53,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009212062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:53,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:53,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:07:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936538764] [2022-11-20 21:07:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:53,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:07:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:53,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:07:53,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:07:53,989 INFO L87 Difference]: Start difference. First operand 231 states and 338 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:07:56,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:07:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:07:56,131 INFO L93 Difference]: Finished difference Result 450 states and 662 transitions. [2022-11-20 21:07:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:07:56,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 21:07:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:07:56,141 INFO L225 Difference]: With dead ends: 450 [2022-11-20 21:07:56,141 INFO L226 Difference]: Without dead ends: 239 [2022-11-20 21:07:56,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:07:56,144 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 21 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:07:56,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 997 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 21:07:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-20 21:07:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2022-11-20 21:07:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 197 states have (on average 1.50253807106599) internal successors, (296), 213 states have internal predecessors, (296), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:07:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 340 transitions. [2022-11-20 21:07:56,182 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 340 transitions. Word has length 28 [2022-11-20 21:07:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:07:56,190 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 340 transitions. [2022-11-20 21:07:56,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:07:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 340 transitions. [2022-11-20 21:07:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 21:07:56,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:07:56,199 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 21:07:56,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:07:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:56,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:07:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:07:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1646498398, now seen corresponding path program 1 times [2022-11-20 21:07:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:07:56,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574810057] [2022-11-20 21:07:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:07:56,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:07:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:07:56,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:07:56,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 21:07:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:07:57,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:07:57,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:07:57,225 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 21:07:57,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:07:57,226 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:07:57,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574810057] [2022-11-20 21:07:57,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574810057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:07:57,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:07:57,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:07:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854097958] [2022-11-20 21:07:57,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:07:57,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:07:57,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:07:57,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:07:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:07:57,228 INFO L87 Difference]: Start difference. First operand 233 states and 340 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:07:59,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:01,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:03,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:03,589 INFO L93 Difference]: Finished difference Result 453 states and 664 transitions. [2022-11-20 21:08:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 21:08:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 21:08:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:03,592 INFO L225 Difference]: With dead ends: 453 [2022-11-20 21:08:03,593 INFO L226 Difference]: Without dead ends: 230 [2022-11-20 21:08:03,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:08:03,595 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 9 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:03,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1659 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 21:08:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-20 21:08:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-20 21:08:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 194 states have (on average 1.5) internal successors, (291), 210 states have internal predecessors, (291), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:08:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 335 transitions. [2022-11-20 21:08:03,615 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 335 transitions. Word has length 28 [2022-11-20 21:08:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:03,616 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 335 transitions. [2022-11-20 21:08:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:08:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 335 transitions. [2022-11-20 21:08:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 21:08:03,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:03,618 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] [2022-11-20 21:08:03,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:03,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 806678510, now seen corresponding path program 1 times [2022-11-20 21:08:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:03,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319181214] [2022-11-20 21:08:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:03,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:03,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:03,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 21:08:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:04,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:08:04,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:04,779 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 21:08:04,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:04,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:04,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319181214] [2022-11-20 21:08:04,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319181214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:04,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:08:04,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:08:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857326146] [2022-11-20 21:08:04,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:04,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:04,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:08:04,783 INFO L87 Difference]: Start difference. First operand 230 states and 335 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:08:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:04,828 INFO L93 Difference]: Finished difference Result 447 states and 656 transitions. [2022-11-20 21:08:04,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:04,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-20 21:08:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:04,831 INFO L225 Difference]: With dead ends: 447 [2022-11-20 21:08:04,831 INFO L226 Difference]: Without dead ends: 231 [2022-11-20 21:08:04,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 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 21:08:04,836 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 0 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:04,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 666 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:08:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-20 21:08:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-20 21:08:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 195 states have (on average 1.4974358974358974) internal successors, (292), 211 states have internal predecessors, (292), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:08:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 336 transitions. [2022-11-20 21:08:04,877 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 336 transitions. Word has length 33 [2022-11-20 21:08:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 336 transitions. [2022-11-20 21:08:04,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:08:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 336 transitions. [2022-11-20 21:08:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 21:08:04,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:04,882 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 21:08:04,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:05,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:05,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:05,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash -130899567, now seen corresponding path program 1 times [2022-11-20 21:08:05,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:05,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225983014] [2022-11-20 21:08:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:05,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:05,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:05,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:05,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 21:08:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:05,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:05,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:06,055 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 21:08:06,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:06,142 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 21:08:06,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225983014] [2022-11-20 21:08:06,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225983014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1130277028] [2022-11-20 21:08:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:06,143 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:06,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:06,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:06,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-20 21:08:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:07,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 21:08:07,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:07,444 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 21:08:07,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:07,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1130277028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:07,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:07,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:08:07,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812859618] [2022-11-20 21:08:07,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:07,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:07,447 INFO L87 Difference]: Start difference. First operand 231 states and 336 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:08:09,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:09,829 INFO L93 Difference]: Finished difference Result 352 states and 502 transitions. [2022-11-20 21:08:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:09,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-20 21:08:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:09,833 INFO L225 Difference]: With dead ends: 352 [2022-11-20 21:08:09,833 INFO L226 Difference]: Without dead ends: 297 [2022-11-20 21:08:09,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:09,834 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 241 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:09,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 474 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 21:08:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-20 21:08:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 281. [2022-11-20 21:08:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 244 states have (on average 1.4262295081967213) internal successors, (348), 247 states have internal predecessors, (348), 26 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (27), 25 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-20 21:08:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 401 transitions. [2022-11-20 21:08:09,855 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 401 transitions. Word has length 34 [2022-11-20 21:08:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:09,856 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 401 transitions. [2022-11-20 21:08:09,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:08:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 401 transitions. [2022-11-20 21:08:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 21:08:09,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:09,857 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 21:08:09,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:10,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:10,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:10,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:10,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash 865763652, now seen corresponding path program 1 times [2022-11-20 21:08:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:10,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749390278] [2022-11-20 21:08:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:10,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:10,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:10,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:10,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 21:08:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:11,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:11,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:11,390 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 21:08:11,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:11,475 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 21:08:11,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:11,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749390278] [2022-11-20 21:08:11,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749390278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:11,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1551029359] [2022-11-20 21:08:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:11,476 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:11,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:11,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:11,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-20 21:08:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:12,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:12,869 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 21:08:12,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:12,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1551029359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:12,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:12,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:08:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947657588] [2022-11-20 21:08:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:12,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:12,872 INFO L87 Difference]: Start difference. First operand 281 states and 401 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 21:08:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:12,950 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2022-11-20 21:08:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:12,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 36 [2022-11-20 21:08:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:12,953 INFO L225 Difference]: With dead ends: 437 [2022-11-20 21:08:12,953 INFO L226 Difference]: Without dead ends: 338 [2022-11-20 21:08:12,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:12,955 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 278 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:12,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 423 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:08:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-20 21:08:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 315. [2022-11-20 21:08:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 280 states have (on average 1.4214285714285715) internal successors, (398), 281 states have internal predecessors, (398), 22 states have call successors, (22), 11 states have call predecessors, (22), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2022-11-20 21:08:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 446 transitions. [2022-11-20 21:08:12,976 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 446 transitions. Word has length 36 [2022-11-20 21:08:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:12,977 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 446 transitions. [2022-11-20 21:08:12,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 21:08:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 446 transitions. [2022-11-20 21:08:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 21:08:12,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:12,979 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, 1] [2022-11-20 21:08:13,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:13,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:13,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:13,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:13,397 INFO L85 PathProgramCache]: Analyzing trace with hash 434300129, now seen corresponding path program 1 times [2022-11-20 21:08:13,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:13,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206319153] [2022-11-20 21:08:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:13,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:13,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:13,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:13,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 21:08:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:14,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:14,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:14,431 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 21:08:14,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:14,514 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 21:08:14,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206319153] [2022-11-20 21:08:14,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206319153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857510754] [2022-11-20 21:08:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:14,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:14,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-20 21:08:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:15,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:15,916 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 21:08:15,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:15,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [857510754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:15,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:15,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:08:15,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064924677] [2022-11-20 21:08:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:15,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:15,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:15,919 INFO L87 Difference]: Start difference. First operand 315 states and 446 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 21:08:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:16,003 INFO L93 Difference]: Finished difference Result 327 states and 461 transitions. [2022-11-20 21:08:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 38 [2022-11-20 21:08:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:16,006 INFO L225 Difference]: With dead ends: 327 [2022-11-20 21:08:16,006 INFO L226 Difference]: Without dead ends: 311 [2022-11-20 21:08:16,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:16,007 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 296 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:16,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 301 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:08:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-20 21:08:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 291. [2022-11-20 21:08:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 259 states have (on average 1.4401544401544402) internal successors, (373), 265 states have internal predecessors, (373), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-20 21:08:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 416 transitions. [2022-11-20 21:08:16,032 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 416 transitions. Word has length 38 [2022-11-20 21:08:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:16,032 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 416 transitions. [2022-11-20 21:08:16,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 21:08:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 416 transitions. [2022-11-20 21:08:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 21:08:16,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:16,034 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, 1, 1] [2022-11-20 21:08:16,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:16,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:16,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash 586930743, now seen corresponding path program 1 times [2022-11-20 21:08:16,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:16,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330229894] [2022-11-20 21:08:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:16,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:16,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:16,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 21:08:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:17,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:17,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:17,607 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 21:08:17,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:17,697 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 21:08:17,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330229894] [2022-11-20 21:08:17,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330229894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1560634141] [2022-11-20 21:08:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:17,699 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:17,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:17,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 21:08:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:19,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:19,728 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 21:08:19,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:19,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1560634141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-20 21:08:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011623606] [2022-11-20 21:08:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:08:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:08:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:08:19,730 INFO L87 Difference]: Start difference. First operand 291 states and 416 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 21:08:21,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:22,328 INFO L93 Difference]: Finished difference Result 328 states and 456 transitions. [2022-11-20 21:08:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:08:22,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 39 [2022-11-20 21:08:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:22,331 INFO L225 Difference]: With dead ends: 328 [2022-11-20 21:08:22,331 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 21:08:22,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:08:22,332 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 500 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:22,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 391 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 21:08:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 21:08:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2022-11-20 21:08:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 253 states have (on average 1.4308300395256917) internal successors, (362), 258 states have internal predecessors, (362), 21 states have call successors, (21), 11 states have call predecessors, (21), 9 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 21:08:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 401 transitions. [2022-11-20 21:08:22,364 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 401 transitions. Word has length 39 [2022-11-20 21:08:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:22,365 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 401 transitions. [2022-11-20 21:08:22,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 21:08:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 401 transitions. [2022-11-20 21:08:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 21:08:22,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:22,367 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, 1, 1, 1] [2022-11-20 21:08:22,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:22,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:22,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:22,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1425084069, now seen corresponding path program 1 times [2022-11-20 21:08:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677313052] [2022-11-20 21:08:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:22,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:22,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:22,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 21:08:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:23,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:23,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:23,967 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 21:08:23,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:24,054 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 21:08:24,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:24,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677313052] [2022-11-20 21:08:24,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677313052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:24,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1742241662] [2022-11-20 21:08:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:24,055 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:24,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:24,057 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:24,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-20 21:08:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:25,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:25,832 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 21:08:25,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:25,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1742241662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:25,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:25,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:08:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615515816] [2022-11-20 21:08:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:25,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:25,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:25,834 INFO L87 Difference]: Start difference. First operand 284 states and 401 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 21:08:27,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:28,103 INFO L93 Difference]: Finished difference Result 287 states and 403 transitions. [2022-11-20 21:08:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 40 [2022-11-20 21:08:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:28,107 INFO L225 Difference]: With dead ends: 287 [2022-11-20 21:08:28,107 INFO L226 Difference]: Without dead ends: 283 [2022-11-20 21:08:28,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:28,108 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 26 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:28,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 517 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 21:08:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-20 21:08:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-11-20 21:08:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 253 states have (on average 1.4229249011857708) internal successors, (360), 257 states have internal predecessors, (360), 20 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 21:08:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 398 transitions. [2022-11-20 21:08:28,139 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 398 transitions. Word has length 40 [2022-11-20 21:08:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:28,139 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 398 transitions. [2022-11-20 21:08:28,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 21:08:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 398 transitions. [2022-11-20 21:08:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 21:08:28,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:28,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:08:28,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:28,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:28,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1876518501, now seen corresponding path program 1 times [2022-11-20 21:08:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:28,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658016593] [2022-11-20 21:08:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:28,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:28,550 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:28,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 21:08:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:29,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:29,874 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 21:08:29,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:29,954 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 21:08:29,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:29,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658016593] [2022-11-20 21:08:29,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658016593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:29,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076467594] [2022-11-20 21:08:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:29,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:29,956 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:29,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-20 21:08:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:31,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:31,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:32,377 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 21:08:32,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:32,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076467594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:32,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:32,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-20 21:08:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696679460] [2022-11-20 21:08:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:32,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:08:32,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:08:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:08:32,379 INFO L87 Difference]: Start difference. First operand 283 states and 398 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 21:08:34,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:34,887 INFO L93 Difference]: Finished difference Result 318 states and 440 transitions. [2022-11-20 21:08:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:08:34,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 50 [2022-11-20 21:08:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:34,890 INFO L225 Difference]: With dead ends: 318 [2022-11-20 21:08:34,890 INFO L226 Difference]: Without dead ends: 283 [2022-11-20 21:08:34,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:08:34,891 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 297 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:34,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 476 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 21:08:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-20 21:08:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2022-11-20 21:08:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 253 states have (on average 1.4150197628458498) internal successors, (358), 257 states have internal predecessors, (358), 20 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 21:08:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 396 transitions. [2022-11-20 21:08:34,924 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 396 transitions. Word has length 50 [2022-11-20 21:08:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:34,924 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 396 transitions. [2022-11-20 21:08:34,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 21:08:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 396 transitions. [2022-11-20 21:08:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 21:08:34,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:34,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:08:34,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:35,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:35,346 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:35,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash -819982396, now seen corresponding path program 1 times [2022-11-20 21:08:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:35,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676689769] [2022-11-20 21:08:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:35,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:35,349 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:35,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 21:08:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:36,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:36,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:36,704 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 21:08:36,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:36,809 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 21:08:36,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:36,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676689769] [2022-11-20 21:08:36,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676689769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [145228921] [2022-11-20 21:08:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:36,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:36,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:36,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-20 21:08:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:38,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:38,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:39,528 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 21:08:39,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:39,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [145228921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:39,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:39,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-20 21:08:39,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685470644] [2022-11-20 21:08:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:39,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:08:39,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:39,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:08:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:08:39,531 INFO L87 Difference]: Start difference. First operand 283 states and 396 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 21:08:41,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:42,060 INFO L93 Difference]: Finished difference Result 343 states and 472 transitions. [2022-11-20 21:08:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:08:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 51 [2022-11-20 21:08:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:42,063 INFO L225 Difference]: With dead ends: 343 [2022-11-20 21:08:42,063 INFO L226 Difference]: Without dead ends: 304 [2022-11-20 21:08:42,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:08:42,064 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 296 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:42,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 564 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 21:08:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-20 21:08:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 281. [2022-11-20 21:08:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 251 states have (on average 1.406374501992032) internal successors, (353), 255 states have internal predecessors, (353), 20 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 21:08:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 391 transitions. [2022-11-20 21:08:42,099 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 391 transitions. Word has length 51 [2022-11-20 21:08:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:42,099 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 391 transitions. [2022-11-20 21:08:42,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 21:08:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 391 transitions. [2022-11-20 21:08:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 21:08:42,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:42,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:08:42,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:42,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:42,523 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash 939084857, now seen corresponding path program 1 times [2022-11-20 21:08:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29975244] [2022-11-20 21:08:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:42,526 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:42,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 21:08:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:43,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:43,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:44,014 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 21:08:44,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:44,110 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 21:08:44,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:44,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29975244] [2022-11-20 21:08:44,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29975244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:44,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [382695398] [2022-11-20 21:08:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:44,111 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:44,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:44,115 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:44,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-20 21:08:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:46,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:46,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:46,260 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 21:08:46,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:46,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [382695398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:46,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:46,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:08:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464038632] [2022-11-20 21:08:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:46,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:46,263 INFO L87 Difference]: Start difference. First operand 281 states and 391 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 21:08:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:46,490 INFO L93 Difference]: Finished difference Result 315 states and 441 transitions. [2022-11-20 21:08:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:08:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 51 [2022-11-20 21:08:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:46,493 INFO L225 Difference]: With dead ends: 315 [2022-11-20 21:08:46,493 INFO L226 Difference]: Without dead ends: 312 [2022-11-20 21:08:46,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:46,495 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 20 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:46,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 554 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:08:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-20 21:08:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 287. [2022-11-20 21:08:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 257 states have (on average 1.4085603112840468) internal successors, (362), 261 states have internal predecessors, (362), 20 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 21:08:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 400 transitions. [2022-11-20 21:08:46,533 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 400 transitions. Word has length 51 [2022-11-20 21:08:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:46,533 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 400 transitions. [2022-11-20 21:08:46,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 21:08:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 400 transitions. [2022-11-20 21:08:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 21:08:46,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:46,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:08:46,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:46,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:46,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash 349220404, now seen corresponding path program 1 times [2022-11-20 21:08:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:46,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000682916] [2022-11-20 21:08:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:46,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:46,966 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:46,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 21:08:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:48,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:48,452 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 21:08:48,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:48,530 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 21:08:48,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:48,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000682916] [2022-11-20 21:08:48,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000682916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [935161009] [2022-11-20 21:08:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:48,531 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:48,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:48,532 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:48,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-20 21:08:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:50,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:50,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:51,436 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 21:08:51,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:51,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [935161009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:51,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:51,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-20 21:08:51,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033359100] [2022-11-20 21:08:51,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:08:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:51,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:08:51,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 21:08:51,439 INFO L87 Difference]: Start difference. First operand 287 states and 400 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 21:08:53,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:08:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:08:53,928 INFO L93 Difference]: Finished difference Result 321 states and 442 transitions. [2022-11-20 21:08:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:08:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 52 [2022-11-20 21:08:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:08:53,931 INFO L225 Difference]: With dead ends: 321 [2022-11-20 21:08:53,931 INFO L226 Difference]: Without dead ends: 315 [2022-11-20 21:08:53,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:08:53,932 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 288 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:08:53,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 511 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 21:08:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-20 21:08:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 290. [2022-11-20 21:08:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 259 states have (on average 1.4015444015444016) internal successors, (363), 264 states have internal predecessors, (363), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 21:08:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 401 transitions. [2022-11-20 21:08:53,980 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 401 transitions. Word has length 52 [2022-11-20 21:08:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:08:53,981 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 401 transitions. [2022-11-20 21:08:53,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 21:08:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 401 transitions. [2022-11-20 21:08:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 21:08:53,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:08:53,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:08:54,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:54,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-20 21:08:54,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:54,399 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:08:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:08:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash 664617645, now seen corresponding path program 1 times [2022-11-20 21:08:54,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:08:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595766166] [2022-11-20 21:08:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:54,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:08:54,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:08:54,401 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:08:54,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 21:08:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:55,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:08:55,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:55,980 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 21:08:55,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:08:56,066 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 21:08:56,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:08:56,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595766166] [2022-11-20 21:08:56,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595766166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:08:56,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [384309897] [2022-11-20 21:08:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:08:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:08:56,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:08:56,068 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:08:56,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-20 21:08:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:08:58,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:08:58,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:08:58,514 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 21:08:58,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:08:58,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [384309897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:08:58,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:08:58,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:08:58,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110474319] [2022-11-20 21:08:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:08:58,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:08:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:08:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:08:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:08:58,517 INFO L87 Difference]: Start difference. First operand 290 states and 401 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:09:00,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:09:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:00,613 INFO L93 Difference]: Finished difference Result 328 states and 438 transitions. [2022-11-20 21:09:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:09:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-20 21:09:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:00,617 INFO L225 Difference]: With dead ends: 328 [2022-11-20 21:09:00,617 INFO L226 Difference]: Without dead ends: 271 [2022-11-20 21:09:00,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:09:00,623 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 77 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:00,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 554 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 21:09:00,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-20 21:09:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 255. [2022-11-20 21:09:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 227 states have (on average 1.3876651982378854) internal successors, (315), 231 states have internal predecessors, (315), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:09:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 348 transitions. [2022-11-20 21:09:00,665 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 348 transitions. Word has length 53 [2022-11-20 21:09:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:00,665 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 348 transitions. [2022-11-20 21:09:00,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 21:09:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 348 transitions. [2022-11-20 21:09:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 21:09:00,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:00,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:00,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:00,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:01,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:01,100 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:01,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1116031123, now seen corresponding path program 1 times [2022-11-20 21:09:01,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:01,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843523717] [2022-11-20 21:09:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:01,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:01,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:01,102 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:09:01,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 21:09:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:02,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:02,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:02,696 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 21:09:02,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:02,777 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 21:09:02,777 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:02,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843523717] [2022-11-20 21:09:02,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843523717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1012815823] [2022-11-20 21:09:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:02,778 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:02,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:09:02,779 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:09:02,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-20 21:09:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:05,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:05,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:05,497 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 21:09:05,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:09:05,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1012815823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:05,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:09:05,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-20 21:09:05,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335682967] [2022-11-20 21:09:05,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:05,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:09:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:09:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:09:05,500 INFO L87 Difference]: Start difference. First operand 255 states and 348 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 21:09:07,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:09:08,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:08,014 INFO L93 Difference]: Finished difference Result 307 states and 405 transitions. [2022-11-20 21:09:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:09:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 53 [2022-11-20 21:09:08,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:08,017 INFO L225 Difference]: With dead ends: 307 [2022-11-20 21:09:08,017 INFO L226 Difference]: Without dead ends: 255 [2022-11-20 21:09:08,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-20 21:09:08,018 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 26 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:08,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1141 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 21:09:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-20 21:09:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2022-11-20 21:09:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 227 states have (on average 1.3832599118942732) internal successors, (314), 231 states have internal predecessors, (314), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:09:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 347 transitions. [2022-11-20 21:09:08,055 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 347 transitions. Word has length 53 [2022-11-20 21:09:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:08,055 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 347 transitions. [2022-11-20 21:09:08,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 21:09:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 347 transitions. [2022-11-20 21:09:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 21:09:08,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:08,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:08,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:08,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:08,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:08,471 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1141784600, now seen corresponding path program 1 times [2022-11-20 21:09:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:08,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468253937] [2022-11-20 21:09:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:08,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:08,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:08,473 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:09:08,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 21:09:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:10,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:10,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:10,156 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 21:09:10,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:10,234 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 21:09:10,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:10,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468253937] [2022-11-20 21:09:10,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468253937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:10,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1810609153] [2022-11-20 21:09:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:10,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:09:10,236 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:09:10,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-20 21:09:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:12,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:12,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:13,091 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 21:09:13,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:09:13,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1810609153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:13,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:09:13,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-20 21:09:13,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356021821] [2022-11-20 21:09:13,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:13,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:09:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:09:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:09:13,094 INFO L87 Difference]: Start difference. First operand 255 states and 347 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 21:09:15,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:09:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:15,560 INFO L93 Difference]: Finished difference Result 307 states and 404 transitions. [2022-11-20 21:09:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:09:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 53 [2022-11-20 21:09:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:15,563 INFO L225 Difference]: With dead ends: 307 [2022-11-20 21:09:15,563 INFO L226 Difference]: Without dead ends: 254 [2022-11-20 21:09:15,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-20 21:09:15,564 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 26 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:15,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1124 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 21:09:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-20 21:09:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-20 21:09:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 226 states have (on average 1.3805309734513274) internal successors, (312), 230 states have internal predecessors, (312), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:09:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 345 transitions. [2022-11-20 21:09:15,626 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 345 transitions. Word has length 53 [2022-11-20 21:09:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:15,626 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 345 transitions. [2022-11-20 21:09:15,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 21:09:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 345 transitions. [2022-11-20 21:09:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:09:15,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:15,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:15,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:15,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:16,043 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 698653043, now seen corresponding path program 1 times [2022-11-20 21:09:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790374109] [2022-11-20 21:09:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:16,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:16,047 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:09:16,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 21:09:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:17,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:17,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:17,862 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 21:09:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:17,952 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 21:09:17,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:17,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790374109] [2022-11-20 21:09:17,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790374109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:17,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689369601] [2022-11-20 21:09:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:17,953 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:09:17,955 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:09:17,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-20 21:09:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:20,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:20,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:20,971 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 21:09:20,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:09:20,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689369601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:20,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:09:20,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-20 21:09:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783682326] [2022-11-20 21:09:20,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:20,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:09:20,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:09:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:09:20,973 INFO L87 Difference]: Start difference. First operand 254 states and 345 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 21:09:22,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:09:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:23,361 INFO L93 Difference]: Finished difference Result 306 states and 402 transitions. [2022-11-20 21:09:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:09:23,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2022-11-20 21:09:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:23,363 INFO L225 Difference]: With dead ends: 306 [2022-11-20 21:09:23,364 INFO L226 Difference]: Without dead ends: 254 [2022-11-20 21:09:23,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-20 21:09:23,365 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 26 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:23,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1131 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 21:09:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-20 21:09:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-20 21:09:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 226 states have (on average 1.3716814159292035) internal successors, (310), 230 states have internal predecessors, (310), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 21:09:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 343 transitions. [2022-11-20 21:09:23,401 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 343 transitions. Word has length 54 [2022-11-20 21:09:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:23,401 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 343 transitions. [2022-11-20 21:09:23,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 21:09:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 343 transitions. [2022-11-20 21:09:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:09:23,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:23,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:23,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-20 21:09:23,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:23,831 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash 917507761, now seen corresponding path program 1 times [2022-11-20 21:09:23,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:23,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810369978] [2022-11-20 21:09:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:23,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:23,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:23,833 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:09:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 21:09:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:25,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:25,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:25,809 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 21:09:25,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:25,888 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 21:09:25,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:25,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810369978] [2022-11-20 21:09:25,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810369978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:25,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [869600337] [2022-11-20 21:09:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:25,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:09:25,899 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:09:25,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-20 21:09:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:28,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:28,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:29,100 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 21:09:29,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:09:29,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [869600337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:29,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:09:29,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-20 21:09:29,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004465049] [2022-11-20 21:09:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:29,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:09:29,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:09:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:09:29,103 INFO L87 Difference]: Start difference. First operand 254 states and 343 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 21:09:31,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:09:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:31,272 INFO L93 Difference]: Finished difference Result 281 states and 371 transitions. [2022-11-20 21:09:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:09:31,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2022-11-20 21:09:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:31,274 INFO L225 Difference]: With dead ends: 281 [2022-11-20 21:09:31,274 INFO L226 Difference]: Without dead ends: 260 [2022-11-20 21:09:31,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:09:31,275 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 39 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:31,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1106 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 21:09:31,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-20 21:09:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 248. [2022-11-20 21:09:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 222 states have (on average 1.3738738738738738) internal successors, (305), 226 states have internal predecessors, (305), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 21:09:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 336 transitions. [2022-11-20 21:09:31,313 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 336 transitions. Word has length 54 [2022-11-20 21:09:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:31,313 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 336 transitions. [2022-11-20 21:09:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 21:09:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 336 transitions. [2022-11-20 21:09:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 21:09:31,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:31,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:31,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:31,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:31,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:31,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1171072816, now seen corresponding path program 1 times [2022-11-20 21:09:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:31,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575905725] [2022-11-20 21:09:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:31,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:31,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:31,741 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:09:31,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 21:09:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:33,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:33,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:33,668 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 21:09:33,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:33,780 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 21:09:33,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:33,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575905725] [2022-11-20 21:09:33,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575905725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:33,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [920125323] [2022-11-20 21:09:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:33,781 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:09:33,783 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:09:33,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-20 21:09:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:36,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:09:36,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:36,955 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 21:09:36,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:09:36,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [920125323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:09:36,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 21:09:36,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-20 21:09:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69787565] [2022-11-20 21:09:36,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:09:36,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:09:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:09:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:09:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:09:36,958 INFO L87 Difference]: Start difference. First operand 248 states and 336 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:09:38,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 21:09:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:39,137 INFO L93 Difference]: Finished difference Result 299 states and 401 transitions. [2022-11-20 21:09:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:09:39,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2022-11-20 21:09:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:39,139 INFO L225 Difference]: With dead ends: 299 [2022-11-20 21:09:39,139 INFO L226 Difference]: Without dead ends: 246 [2022-11-20 21:09:39,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:09:39,140 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 5 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:39,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 525 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 21:09:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-20 21:09:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-20 21:09:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 221 states have (on average 1.3665158371040724) internal successors, (302), 224 states have internal predecessors, (302), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-20 21:09:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 332 transitions. [2022-11-20 21:09:39,200 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 332 transitions. Word has length 56 [2022-11-20 21:09:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:39,200 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 332 transitions. [2022-11-20 21:09:39,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:09:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 332 transitions. [2022-11-20 21:09:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:09:39,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:09:39,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:09:39,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:39,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-20 21:09:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:39,626 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:09:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:09:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1859767113, now seen corresponding path program 1 times [2022-11-20 21:09:39,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:09:39,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416332300] [2022-11-20 21:09:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 21:09:39,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:09:39,628 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 21:09:39,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-20 21:09:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:09:41,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:09:41,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:09:41,675 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 21:09:41,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:09:41,757 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 21:09:41,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:09:41,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416332300] [2022-11-20 21:09:41,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416332300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:09:41,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1198722404] [2022-11-20 21:09:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:09:41,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 21:09:41,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 21:09:41,760 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 21:09:41,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16834185-3fc5-452e-a810-714151b7173d/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process