./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur --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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- 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-38b53e6 [2022-11-25 22:38:00,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:38:00,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:38:00,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:38:00,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:38:00,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:38:00,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:38:00,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:38:00,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:38:00,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:38:00,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:38:00,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:38:00,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:38:00,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:38:00,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:38:00,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:38:00,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:38:00,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:38:00,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:38:00,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:38:00,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:38:00,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:38:00,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:38:00,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:38:00,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:38:00,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:38:00,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:38:00,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:38:00,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:38:00,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:38:00,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:38:00,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:38:00,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:38:00,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:38:00,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:38:00,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:38:00,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:38:00,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:38:00,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:38:00,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:38:00,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:38:00,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:38:00,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:38:00,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:38:00,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:38:00,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:38:00,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:38:00,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:38:00,169 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:38:00,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:38:00,170 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:38:00,170 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:38:00,171 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:38:00,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:38:00,171 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:38:00,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:38:00,172 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:38:00,172 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:38:00,172 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:38:00,172 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:38:00,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:38:00,173 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:38:00,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:38:00,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:38:00,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:38:00,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:38:00,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:38:00,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:38:00,175 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:38:00,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:38:00,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:38:00,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:38:00,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:38:00,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:38:00,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:38:00,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:38:00,177 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:38:00,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:38:00,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:38:00,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:38:00,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:38:00,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:38:00,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:38:00,179 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2022-11-25 22:38:00,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:38:00,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:38:00,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:38:00,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:38:00,534 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:38:00,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2022-11-25 22:38:03,544 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:38:03,976 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:38:03,976 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2022-11-25 22:38:04,009 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/data/72dba1b22/c7d9fe16e0594b2c9e5a29fa94681e35/FLAGf7550a395 [2022-11-25 22:38:04,028 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/data/72dba1b22/c7d9fe16e0594b2c9e5a29fa94681e35 [2022-11-25 22:38:04,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:38:04,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:38:04,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:38:04,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:38:04,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:38:04,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:38:04" (1/1) ... [2022-11-25 22:38:04,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225d5130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:04, skipping insertion in model container [2022-11-25 22:38:04,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:38:04" (1/1) ... [2022-11-25 22:38:04,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:38:04,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:38:04,768 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2022-11-25 22:38:04,787 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2022-11-25 22:38:04,790 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:38:04,934 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2022-11-25 22:38:04,940 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2022-11-25 22:38:04,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:38:04,972 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:38:05,035 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2022-11-25 22:38:05,037 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2022-11-25 22:38:05,038 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:38:05,140 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2022-11-25 22:38:05,141 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_ff2f3c89-152e-45d3-ba63-f5e2878a7094/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2022-11-25 22:38:05,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:38:05,251 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:38:05,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05 WrapperNode [2022-11-25 22:38:05,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:38:05,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:38:05,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:38:05,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:38:05,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,409 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1036 [2022-11-25 22:38:05,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:38:05,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:38:05,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:38:05,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:38:05,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,539 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:38:05,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:38:05,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:38:05,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:38:05,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (1/1) ... [2022-11-25 22:38:05,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:38:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:05,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:38:05,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:38:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:38:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 22:38:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:38:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:38:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-25 22:38:05,673 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-25 22:38:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:38:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:38:05,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:38:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:38:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:38:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:38:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-25 22:38:05,675 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-25 22:38:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:38:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-25 22:38:05,676 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-25 22:38:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:38:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:38:05,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:38:05,965 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:38:05,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:38:07,484 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:38:07,920 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:38:07,920 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-25 22:38:07,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:38:07 BoogieIcfgContainer [2022-11-25 22:38:07,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:38:07,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:38:07,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:38:07,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:38:07,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:38:04" (1/3) ... [2022-11-25 22:38:07,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc12aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:38:07, skipping insertion in model container [2022-11-25 22:38:07,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:38:05" (2/3) ... [2022-11-25 22:38:07,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc12aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:38:07, skipping insertion in model container [2022-11-25 22:38:07,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:38:07" (3/3) ... [2022-11-25 22:38:07,935 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2022-11-25 22:38:07,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:38:07,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 22:38:08,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:38:08,032 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;@5e385842, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:38:08,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 22:38:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 120 states have (on average 1.7166666666666666) internal successors, (206), 124 states have internal predecessors, (206), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-25 22:38:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:38:08,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:08,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:08,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:08,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1226502113, now seen corresponding path program 1 times [2022-11-25 22:38:08,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233614751] [2022-11-25 22:38:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:08,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:38:08,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:08,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233614751] [2022-11-25 22:38:08,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233614751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:08,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:08,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:38:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484659859] [2022-11-25 22:38:08,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:08,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:38:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:08,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:38:08,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:38:08,327 INFO L87 Difference]: Start difference. First operand has 142 states, 120 states have (on average 1.7166666666666666) internal successors, (206), 124 states have internal predecessors, (206), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:08,773 INFO L93 Difference]: Finished difference Result 281 states and 474 transitions. [2022-11-25 22:38:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:38:08,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 22:38:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:08,786 INFO L225 Difference]: With dead ends: 281 [2022-11-25 22:38:08,786 INFO L226 Difference]: Without dead ends: 138 [2022-11-25 22:38:08,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:38:08,793 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:08,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:38:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-25 22:38:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-25 22:38:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 117 states have (on average 1.188034188034188) internal successors, (139), 122 states have internal predecessors, (139), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 22:38:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2022-11-25 22:38:08,838 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 7 [2022-11-25 22:38:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:08,838 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2022-11-25 22:38:08,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2022-11-25 22:38:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:38:08,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:08,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:08,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:38:08,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1897806726, now seen corresponding path program 1 times [2022-11-25 22:38:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705779759] [2022-11-25 22:38:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:08,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:38:09,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:09,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705779759] [2022-11-25 22:38:09,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705779759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:09,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:09,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:38:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127748644] [2022-11-25 22:38:09,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:38:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:38:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:38:09,101 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:11,013 INFO L93 Difference]: Finished difference Result 276 states and 329 transitions. [2022-11-25 22:38:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:38:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 22:38:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:11,017 INFO L225 Difference]: With dead ends: 276 [2022-11-25 22:38:11,018 INFO L226 Difference]: Without dead ends: 203 [2022-11-25 22:38:11,018 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 [2022-11-25 22:38:11,019 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 66 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:11,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 385 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 22:38:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-25 22:38:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 140. [2022-11-25 22:38:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.184873949579832) internal successors, (141), 124 states have internal predecessors, (141), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 22:38:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2022-11-25 22:38:11,037 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 9 [2022-11-25 22:38:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:11,038 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2022-11-25 22:38:11,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2022-11-25 22:38:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 22:38:11,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:11,039 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] [2022-11-25 22:38:11,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:38:11,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 590989464, now seen corresponding path program 1 times [2022-11-25 22:38:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:11,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469045534] [2022-11-25 22:38:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:11,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:11,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862891781] [2022-11-25 22:38:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:11,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:11,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:11,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:38:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:16,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 22:38:16,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:38:16,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:38:16,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:16,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469045534] [2022-11-25 22:38:16,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:16,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862891781] [2022-11-25 22:38:16,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862891781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:16,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:16,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 22:38:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463013787] [2022-11-25 22:38:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:38:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:38:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:38:16,459 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:20,948 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2022-11-25 22:38:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:38:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-25 22:38:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:20,950 INFO L225 Difference]: With dead ends: 151 [2022-11-25 22:38:20,951 INFO L226 Difference]: Without dead ends: 149 [2022-11-25 22:38:20,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:38:20,952 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 125 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:20,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 631 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 22:38:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-25 22:38:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-25 22:38:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 125 states have (on average 1.184) internal successors, (148), 131 states have internal predecessors, (148), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 22:38:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 175 transitions. [2022-11-25 22:38:20,968 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 175 transitions. Word has length 20 [2022-11-25 22:38:20,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:20,968 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 175 transitions. [2022-11-25 22:38:20,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 175 transitions. [2022-11-25 22:38:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 22:38:20,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:20,970 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] [2022-11-25 22:38:20,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 22:38:21,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:21,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash 518864303, now seen corresponding path program 1 times [2022-11-25 22:38:21,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:21,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579330741] [2022-11-25 22:38:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:21,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:21,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:21,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24593457] [2022-11-25 22:38:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:21,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:21,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:21,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:21,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:38:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:22,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:38:22,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:38:22,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:38:22,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579330741] [2022-11-25 22:38:22,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24593457] [2022-11-25 22:38:22,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24593457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:22,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:22,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:38:22,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491687449] [2022-11-25 22:38:22,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:22,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:38:22,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:38:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:38:22,298 INFO L87 Difference]: Start difference. First operand 149 states and 175 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:23,045 INFO L93 Difference]: Finished difference Result 352 states and 415 transitions. [2022-11-25 22:38:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:38:23,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-25 22:38:23,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:23,050 INFO L225 Difference]: With dead ends: 352 [2022-11-25 22:38:23,050 INFO L226 Difference]: Without dead ends: 206 [2022-11-25 22:38:23,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:38:23,052 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 52 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:23,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 278 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 22:38:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-25 22:38:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 192. [2022-11-25 22:38:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 168 states have (on average 1.1726190476190477) internal successors, (197), 174 states have internal predecessors, (197), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 22:38:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 224 transitions. [2022-11-25 22:38:23,070 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 224 transitions. Word has length 28 [2022-11-25 22:38:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:23,071 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 224 transitions. [2022-11-25 22:38:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:38:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 224 transitions. [2022-11-25 22:38:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 22:38:23,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:23,072 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:23,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 22:38:23,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 22:38:23,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:23,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:23,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1286675055, now seen corresponding path program 1 times [2022-11-25 22:38:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:23,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264460972] [2022-11-25 22:38:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:23,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:23,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:23,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194881386] [2022-11-25 22:38:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:23,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:23,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:23,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:23,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:38:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:23,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:38:23,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:38:23,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:38:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:38:24,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:24,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264460972] [2022-11-25 22:38:24,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:24,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194881386] [2022-11-25 22:38:24,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194881386] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:38:24,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:38:24,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-11-25 22:38:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729075540] [2022-11-25 22:38:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:24,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:38:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:38:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:38:24,114 INFO L87 Difference]: Start difference. First operand 192 states and 224 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:38:25,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:25,562 INFO L93 Difference]: Finished difference Result 710 states and 839 transitions. [2022-11-25 22:38:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:38:25,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-11-25 22:38:25,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:25,567 INFO L225 Difference]: With dead ends: 710 [2022-11-25 22:38:25,567 INFO L226 Difference]: Without dead ends: 534 [2022-11-25 22:38:25,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:38:25,569 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 720 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:25,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 479 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 22:38:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-25 22:38:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 312. [2022-11-25 22:38:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 283 states have (on average 1.176678445229682) internal successors, (333), 289 states have internal predecessors, (333), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-25 22:38:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 365 transitions. [2022-11-25 22:38:25,604 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 365 transitions. Word has length 32 [2022-11-25 22:38:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:25,604 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 365 transitions. [2022-11-25 22:38:25,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:38:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 365 transitions. [2022-11-25 22:38:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:38:25,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:25,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:25,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:38:25,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:25,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash 220787766, now seen corresponding path program 1 times [2022-11-25 22:38:25,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:25,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91050839] [2022-11-25 22:38:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:25,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:25,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:25,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045733356] [2022-11-25 22:38:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:25,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:25,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:25,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:38:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:26,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:38:26,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:38:26,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:38:26,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:26,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91050839] [2022-11-25 22:38:26,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:26,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045733356] [2022-11-25 22:38:26,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045733356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:26,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:26,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:38:26,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662482144] [2022-11-25 22:38:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:26,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:38:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:38:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:38:26,566 INFO L87 Difference]: Start difference. First operand 312 states and 365 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:38:29,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:30,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:31,357 INFO L93 Difference]: Finished difference Result 592 states and 694 transitions. [2022-11-25 22:38:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:38:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2022-11-25 22:38:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:31,362 INFO L225 Difference]: With dead ends: 592 [2022-11-25 22:38:31,362 INFO L226 Difference]: Without dead ends: 312 [2022-11-25 22:38:31,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:38:31,364 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 15 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:31,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 588 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 22:38:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-25 22:38:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-11-25 22:38:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 283 states have (on average 1.176678445229682) internal successors, (333), 289 states have internal predecessors, (333), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 22:38:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 364 transitions. [2022-11-25 22:38:31,397 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 364 transitions. Word has length 57 [2022-11-25 22:38:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:31,399 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 364 transitions. [2022-11-25 22:38:31,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:38:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 364 transitions. [2022-11-25 22:38:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 22:38:31,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:31,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:31,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:38:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:31,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -605656871, now seen corresponding path program 1 times [2022-11-25 22:38:31,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:31,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863313594] [2022-11-25 22:38:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:31,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:31,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:31,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069434158] [2022-11-25 22:38:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:31,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:31,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:31,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:31,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:38:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:32,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:38:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:32,311 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 11 treesize of output 7 [2022-11-25 22:38:32,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 22:38:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:38:32,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:38:32,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863313594] [2022-11-25 22:38:32,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069434158] [2022-11-25 22:38:32,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069434158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:32,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:32,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:38:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596585684] [2022-11-25 22:38:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:32,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:38:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:38:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:38:32,332 INFO L87 Difference]: Start difference. First operand 312 states and 364 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 22:38:34,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:34,866 INFO L93 Difference]: Finished difference Result 415 states and 494 transitions. [2022-11-25 22:38:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:38:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2022-11-25 22:38:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:34,873 INFO L225 Difference]: With dead ends: 415 [2022-11-25 22:38:34,873 INFO L226 Difference]: Without dead ends: 402 [2022-11-25 22:38:34,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:38:34,874 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 49 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:34,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 383 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 22:38:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-25 22:38:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 316. [2022-11-25 22:38:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 287 states have (on average 1.1742160278745644) internal successors, (337), 293 states have internal predecessors, (337), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 22:38:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 368 transitions. [2022-11-25 22:38:34,903 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 368 transitions. Word has length 62 [2022-11-25 22:38:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:34,904 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 368 transitions. [2022-11-25 22:38:34,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 22:38:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 368 transitions. [2022-11-25 22:38:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 22:38:34,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:34,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:34,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:38:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:35,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1693270885, now seen corresponding path program 1 times [2022-11-25 22:38:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237952504] [2022-11-25 22:38:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:35,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253035674] [2022-11-25 22:38:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:35,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:35,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:35,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:38:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:36,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 22:38:36,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 22:38:36,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:38:36,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:36,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237952504] [2022-11-25 22:38:36,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:36,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253035674] [2022-11-25 22:38:36,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253035674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:38:36,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:38:36,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 22:38:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252622549] [2022-11-25 22:38:36,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:38:36,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:38:36,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:38:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:38:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:38:36,240 INFO L87 Difference]: Start difference. First operand 316 states and 368 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 22:38:38,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:40,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:41,999 INFO L93 Difference]: Finished difference Result 604 states and 709 transitions. [2022-11-25 22:38:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:38:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2022-11-25 22:38:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:42,005 INFO L225 Difference]: With dead ends: 604 [2022-11-25 22:38:42,005 INFO L226 Difference]: Without dead ends: 319 [2022-11-25 22:38:42,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:38:42,007 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 14 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:42,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 892 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 22:38:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-25 22:38:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-11-25 22:38:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 289 states have (on average 1.1764705882352942) internal successors, (340), 296 states have internal predecessors, (340), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-25 22:38:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 372 transitions. [2022-11-25 22:38:42,030 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 372 transitions. Word has length 69 [2022-11-25 22:38:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:42,030 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 372 transitions. [2022-11-25 22:38:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 22:38:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 372 transitions. [2022-11-25 22:38:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 22:38:42,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:42,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:42,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:38:42,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 22:38:42,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 22:38:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash -586415689, now seen corresponding path program 1 times [2022-11-25 22:38:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:42,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932017157] [2022-11-25 22:38:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:42,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:42,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978284739] [2022-11-25 22:38:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:42,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:42,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:42,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff2f3c89-152e-45d3-ba63-f5e2878a7094/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:38:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:38:43,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 22:38:43,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:38:43,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:38:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:38:44,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:38:44,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932017157] [2022-11-25 22:38:44,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:38:44,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978284739] [2022-11-25 22:38:44,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978284739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:38:44,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975126313] [2022-11-25 22:38:44,176 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-25 22:38:44,176 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:38:44,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:38:44,186 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:38:44,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:38:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,296 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-25 22:38:44,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-25 22:38:44,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-11-25 22:38:44,328 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 8 treesize of output 7 [2022-11-25 22:38:44,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:38:44,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-25 22:38:44,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-25 22:38:44,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,462 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-25 22:38:44,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-25 22:38:44,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-25 22:38:44,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 40 [2022-11-25 22:38:44,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2022-11-25 22:38:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:38:44,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 22:38:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:44,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-25 22:38:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-25 22:38:45,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-25 22:38:45,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897015 treesize of output 8253105 [2022-11-25 22:38:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:38:45,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 8253077 treesize of output 5376270 [2022-11-25 22:38:45,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897013 treesize of output 8253101 [2022-11-25 22:38:45,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 8253073 treesize of output 5376282 [2022-11-25 22:38:45,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 31 [2022-11-25 22:38:45,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897028 treesize of output 8253114 [2022-11-25 22:38:45,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:38:45,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8253086 treesize of output 5376285 [2022-11-25 22:38:45,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897028 treesize of output 8253114 [2022-11-25 22:38:45,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:45,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:38:45,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8664062 treesize of output 6198237 [2022-11-25 22:38:45,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 31 [2022-11-25 22:38:46,039 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 25 treesize of output 1 [2022-11-25 22:38:46,042 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 16 treesize of output 12 [2022-11-25 22:38:46,046 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 25 treesize of output 1 [2022-11-25 22:38:46,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 22:38:46,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 22:38:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-25 22:38:46,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-25 22:38:46,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-25 22:38:46,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897009 treesize of output 8253083 [2022-11-25 22:38:46,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8253064 treesize of output 5787194 [2022-11-25 22:38:46,284 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 5787179 treesize of output 5376201 [2022-11-25 22:38:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2022-11-25 22:38:46,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-25 22:38:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897009 treesize of output 8253083 [2022-11-25 22:38:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8253064 treesize of output 5787194 [2022-11-25 22:38:46,686 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 5787179 treesize of output 5376201 [2022-11-25 22:38:46,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-25 22:38:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-25 22:38:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:38:46,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2022-11-25 22:38:46,874 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 [2022-11-25 22:38:46,883 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 13 treesize of output 9 [2022-11-25 22:38:46,891 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 13 treesize of output 9 [2022-11-25 22:38:46,933 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 14 treesize of output 10 [2022-11-25 22:38:46,939 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 14 treesize of output 10 [2022-11-25 22:38:46,947 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 16 treesize of output 12 [2022-11-25 22:38:46,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 106 [2022-11-25 22:38:46,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 106 [2022-11-25 22:38:46,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 108 [2022-11-25 22:38:47,022 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 16 treesize of output 12 [2022-11-25 22:38:47,027 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 14 treesize of output 10 [2022-11-25 22:38:47,034 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 14 treesize of output 10 [2022-11-25 22:38:47,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 22:38:47,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-25 22:38:47,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 22:38:47,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-25 22:38:49,306 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-25 22:38:49,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1318 treesize of output 957 [2022-11-25 22:38:53,734 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-25 22:38:53,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 1293 treesize of output 1170 [2022-11-25 22:38:57,289 INFO L321 Elim1Store]: treesize reduction 1012, result has 38.9 percent of original size [2022-11-25 22:38:57,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 758 treesize of output 1321 [2022-11-25 22:45:18,247 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 1046 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)