./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/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_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/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_afd5d09c-bba8-4a62-bf78-e093db632543/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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- 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 22:40:18,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:40:18,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:40:18,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:40:18,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:40:18,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:40:18,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:40:18,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:40:18,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:40:18,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:40:18,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:40:18,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:40:18,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:40:18,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:40:18,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:40:18,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:40:18,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:40:18,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:40:18,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:40:18,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:40:18,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:40:18,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:40:18,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:40:18,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:40:18,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:40:18,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:40:18,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:40:18,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:40:18,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:40:18,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:40:18,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:40:18,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:40:18,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:40:18,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:40:18,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:40:18,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:40:18,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:40:18,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:40:18,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:40:18,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:40:18,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:40:18,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:40:18,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:40:18,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:40:18,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:40:18,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:40:18,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:40:18,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:40:18,259 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:40:18,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:40:18,260 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:40:18,260 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:40:18,260 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:40:18,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:40:18,261 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:40:18,261 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:40:18,261 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:40:18,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:40:18,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:40:18,262 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:40:18,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:40:18,263 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:40:18,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:40:18,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:40:18,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:40:18,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:40:18,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:40:18,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:40:18,279 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:40:18,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:40:18,280 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:40:18,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:40:18,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:40:18,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:40:18,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:40:18,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:40:18,282 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:40:18,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:40:18,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:40:18,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:40:18,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:40:18,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:40:18,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:40:18,285 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_afd5d09c-bba8-4a62-bf78-e093db632543/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2022-11-25 22:40:18,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:40:18,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:40:18,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:40:18,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:40:18,609 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:40:18,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-11-25 22:40:21,748 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:40:21,940 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:40:21,940 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-11-25 22:40:21,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/data/51eddec20/dda0b44431ca42b192b130e381f03f8a/FLAGbdc598428 [2022-11-25 22:40:21,963 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/data/51eddec20/dda0b44431ca42b192b130e381f03f8a [2022-11-25 22:40:21,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:40:21,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:40:21,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:40:21,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:40:21,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:40:21,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:40:21" (1/1) ... [2022-11-25 22:40:21,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721c69a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:21, skipping insertion in model container [2022-11-25 22:40:21,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:40:21" (1/1) ... [2022-11-25 22:40:21,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:40:22,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:40:22,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:40:22,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:40:22,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:40:22,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:40:22,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:40:22,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:40:22,163 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_afd5d09c-bba8-4a62-bf78-e093db632543/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-11-25 22:40:22,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:40:22,180 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:40:22,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:40:22,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:40:22,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:40:22,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:40:22,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 22:40:22,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 22:40:22,206 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_afd5d09c-bba8-4a62-bf78-e093db632543/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-11-25 22:40:22,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:40:22,223 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:40:22,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22 WrapperNode [2022-11-25 22:40:22,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:40:22,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:40:22,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:40:22,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:40:22,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,264 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-25 22:40:22,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:40:22,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:40:22,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:40:22,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:40:22,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:40:22,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:40:22,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:40:22,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:40:22,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (1/1) ... [2022-11-25 22:40:22,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:40:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:22,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:40:22,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:40:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 22:40:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 22:40:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 22:40:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 22:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 22:40:22,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 22:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:40:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 22:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 22:40:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:40:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:40:22,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:40:22,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:40:22,426 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 22:40:22,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:40:22,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:40:22,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:40:23,034 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:40:23,034 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 22:40:23,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:40:23 BoogieIcfgContainer [2022-11-25 22:40:23,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:40:23,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:40:23,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:40:23,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:40:23,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:40:21" (1/3) ... [2022-11-25 22:40:23,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d74eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:40:23, skipping insertion in model container [2022-11-25 22:40:23,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:22" (2/3) ... [2022-11-25 22:40:23,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d74eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:40:23, skipping insertion in model container [2022-11-25 22:40:23,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:40:23" (3/3) ... [2022-11-25 22:40:23,047 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-11-25 22:40:23,058 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 22:40:23,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:40:23,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:40:23,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 22:40:23,177 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 22:40:23,215 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 22:40:23,229 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 149 transitions, 322 flow [2022-11-25 22:40:23,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 149 transitions, 322 flow [2022-11-25 22:40:23,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2022-11-25 22:40:23,312 INFO L130 PetriNetUnfolder]: 10/146 cut-off events. [2022-11-25 22:40:23,313 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 22:40:23,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-11-25 22:40:23,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 914 [2022-11-25 22:40:30,109 INFO L134 LiptonReduction]: Checked pairs total: 1274 [2022-11-25 22:40:30,109 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-25 22:40:30,118 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2022-11-25 22:40:30,138 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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 22:40:30,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:40:30,163 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;@11866d65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:40:30,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 22:40:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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 22:40:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 22:40:30,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:30,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:30,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 22:40:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1897647794, now seen corresponding path program 1 times [2022-11-25 22:40:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:30,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701528195] [2022-11-25 22:40:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:30,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:30,739 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 22:40:30,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:30,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701528195] [2022-11-25 22:40:30,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701528195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:30,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:40:30,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:40:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540198238] [2022-11-25 22:40:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:30,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:40:30,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:40:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:40:30,776 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 22:40:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:30,892 INFO L93 Difference]: Finished difference Result 101 states and 274 transitions. [2022-11-25 22:40:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:40:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2022-11-25 22:40:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:30,909 INFO L225 Difference]: With dead ends: 101 [2022-11-25 22:40:30,910 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 22:40:30,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:40:30,919 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:30,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:40:30,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 22:40:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-25 22:40:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.74) internal successors, (274), 100 states have internal predecessors, (274), 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 22:40:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 274 transitions. [2022-11-25 22:40:30,989 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 274 transitions. Word has length 19 [2022-11-25 22:40:30,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:30,991 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 274 transitions. [2022-11-25 22:40:30,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 22:40:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 274 transitions. [2022-11-25 22:40:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 22:40:31,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:31,003 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 22:40:31,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:40:31,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 22:40:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 422986932, now seen corresponding path program 1 times [2022-11-25 22:40:31,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:31,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970784653] [2022-11-25 22:40:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:31,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:40:31,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:31,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970784653] [2022-11-25 22:40:31,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970784653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:31,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:40:31,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:40:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804254508] [2022-11-25 22:40:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:31,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:40:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:40:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:40:31,206 INFO L87 Difference]: Start difference. First operand 101 states and 274 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 22:40:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:31,298 INFO L93 Difference]: Finished difference Result 102 states and 275 transitions. [2022-11-25 22:40:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:40:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-25 22:40:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:31,300 INFO L225 Difference]: With dead ends: 102 [2022-11-25 22:40:31,300 INFO L226 Difference]: Without dead ends: 102 [2022-11-25 22:40:31,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:40:31,302 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:31,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:40:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-25 22:40:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-25 22:40:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.722772277227723) internal successors, (275), 101 states have internal predecessors, (275), 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 22:40:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 275 transitions. [2022-11-25 22:40:31,317 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 275 transitions. Word has length 20 [2022-11-25 22:40:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:31,317 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 275 transitions. [2022-11-25 22:40:31,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 22:40:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 275 transitions. [2022-11-25 22:40:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:40:31,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:31,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:31,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:40:31,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 22:40:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:31,320 INFO L85 PathProgramCache]: Analyzing trace with hash -330314171, now seen corresponding path program 1 times [2022-11-25 22:40:31,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:31,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810779015] [2022-11-25 22:40:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:31,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:40:31,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:31,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810779015] [2022-11-25 22:40:31,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810779015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:40:31,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111582720] [2022-11-25 22:40:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:31,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:31,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:31,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:40:31,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:40:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:31,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:40:31,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:40:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:40:31,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:40:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:40:31,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111582720] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:40:31,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:40:31,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-11-25 22:40:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673463278] [2022-11-25 22:40:31,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:31,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:40:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:40:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:40:31,884 INFO L87 Difference]: Start difference. First operand 102 states and 275 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 22:40:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:31,963 INFO L93 Difference]: Finished difference Result 130 states and 357 transitions. [2022-11-25 22:40:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:40:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-11-25 22:40:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:31,965 INFO L225 Difference]: With dead ends: 130 [2022-11-25 22:40:31,966 INFO L226 Difference]: Without dead ends: 130 [2022-11-25 22:40:31,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:40:31,967 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:31,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:40:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-25 22:40:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-25 22:40:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.7674418604651163) internal successors, (357), 129 states have internal predecessors, (357), 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 22:40:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 357 transitions. [2022-11-25 22:40:31,992 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 357 transitions. Word has length 21 [2022-11-25 22:40:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:31,992 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 357 transitions. [2022-11-25 22:40:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 22:40:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 357 transitions. [2022-11-25 22:40:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 22:40:31,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:31,994 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] [2022-11-25 22:40:32,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:40:32,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:32,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 22:40:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash -132959339, now seen corresponding path program 1 times [2022-11-25 22:40:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:32,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105050432] [2022-11-25 22:40:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:40:32,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:32,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105050432] [2022-11-25 22:40:32,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105050432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:40:32,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19644447] [2022-11-25 22:40:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:32,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:32,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:32,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:40:32,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:40:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:32,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 22:40:32,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:40:32,949 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 22:40:32,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:40:33,000 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 21 treesize of output 21 [2022-11-25 22:40:33,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:40:33,135 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 21 treesize of output 21 [2022-11-25 22:40:33,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:40:33,242 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 21 treesize of output 21 [2022-11-25 22:40:33,277 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 22:40:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:40:33,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:40:33,430 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~A~0.offset (* c_thread2Thread1of1ForFork2_~i~1 4)))) (and (or (<= c_~min~0 c_~max~0) (forall ((v_ArrVal_133 (Array Int Int))) (< c_~max~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_133) c_~A~0.base) .cse0)))) (forall ((v_ArrVal_133 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_133) c_~A~0.base) .cse0))) (or (<= c_~min~0 .cse1) (not (< c_~max~0 .cse1))))))) is different from false [2022-11-25 22:40:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:40:34,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19644447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:40:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [650664486] [2022-11-25 22:40:34,099 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-25 22:40:34,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:40:34,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 19 [2022-11-25 22:40:34,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495613316] [2022-11-25 22:40:34,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:40:34,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 22:40:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 22:40:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=248, Unknown=11, NotChecked=34, Total=380 [2022-11-25 22:40:34,109 INFO L87 Difference]: Start difference. First operand 130 states and 357 transitions. Second operand has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 20 states have internal predecessors, (50), 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 22:40:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:35,225 INFO L93 Difference]: Finished difference Result 226 states and 627 transitions. [2022-11-25 22:40:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 22:40:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 20 states have internal predecessors, (50), 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 22 [2022-11-25 22:40:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:35,226 INFO L225 Difference]: With dead ends: 226 [2022-11-25 22:40:35,226 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 22:40:35,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=370, Invalid=813, Unknown=11, NotChecked=66, Total=1260 [2022-11-25 22:40:35,228 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 179 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:35,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 30 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 318 Invalid, 0 Unknown, 92 Unchecked, 0.4s Time] [2022-11-25 22:40:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 22:40:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 22:40:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 22:40:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 22:40:35,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-11-25 22:40:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:35,230 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 22:40:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 20 states have internal predecessors, (50), 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 22:40:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 22:40:35,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 22:40:35,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-25 22:40:35,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-25 22:40:35,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-25 22:40:35,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-25 22:40:35,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:40:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:35,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 22:40:35,439 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 22:40:35,439 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:40:35,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:40:35 BasicIcfg [2022-11-25 22:40:35,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:40:35,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:40:35,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:40:35,442 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:40:35,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:40:23" (3/4) ... [2022-11-25 22:40:35,445 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 22:40:35,451 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 22:40:35,451 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 22:40:35,451 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 22:40:35,459 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 22:40:35,459 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 22:40:35,459 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 22:40:35,460 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 22:40:35,498 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 22:40:35,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:40:35,499 INFO L158 Benchmark]: Toolchain (without parser) took 13531.64ms. Allocated memory was 119.5MB in the beginning and 163.6MB in the end (delta: 44.0MB). Free memory was 81.1MB in the beginning and 42.8MB in the end (delta: 38.3MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,499 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 119.5MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:40:35,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.82ms. Allocated memory is still 119.5MB. Free memory was 80.8MB in the beginning and 69.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.67ms. Allocated memory is still 119.5MB. Free memory was 68.6MB in the beginning and 66.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,500 INFO L158 Benchmark]: Boogie Preprocessor took 59.60ms. Allocated memory is still 119.5MB. Free memory was 66.9MB in the beginning and 65.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,500 INFO L158 Benchmark]: RCFGBuilder took 712.20ms. Allocated memory is still 119.5MB. Free memory was 65.1MB in the beginning and 46.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,501 INFO L158 Benchmark]: TraceAbstraction took 12401.34ms. Allocated memory was 119.5MB in the beginning and 163.6MB in the end (delta: 44.0MB). Free memory was 45.5MB in the beginning and 46.5MB in the end (delta: -968.0kB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,501 INFO L158 Benchmark]: Witness Printer took 56.54ms. Allocated memory is still 163.6MB. Free memory was 46.5MB in the beginning and 42.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:40:35,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 119.5MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.82ms. Allocated memory is still 119.5MB. Free memory was 80.8MB in the beginning and 69.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.67ms. Allocated memory is still 119.5MB. Free memory was 68.6MB in the beginning and 66.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.60ms. Allocated memory is still 119.5MB. Free memory was 66.9MB in the beginning and 65.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 712.20ms. Allocated memory is still 119.5MB. Free memory was 65.1MB in the beginning and 46.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12401.34ms. Allocated memory was 119.5MB in the beginning and 163.6MB in the end (delta: 44.0MB). Free memory was 45.5MB in the beginning and 46.5MB in the end (delta: -968.0kB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Witness Printer took 56.54ms. Allocated memory is still 163.6MB. Free memory was 46.5MB in the beginning and 42.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 149 PlacesBefore, 33 PlacesAfterwards, 149 TransitionsBefore, 26 TransitionsAfterwards, 914 CoEnabledTransitionPairs, 7 FixpointIterations, 93 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 144 TotalNumberOfCompositions, 1274 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1098, independent: 1057, independent conditional: 0, independent unconditional: 1057, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 612, independent: 598, independent conditional: 0, independent unconditional: 598, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 598, independent conditional: 0, independent unconditional: 598, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1098, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 165 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 92 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 499 IncrementalHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 16 mSDtfsCounter, 499 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 160 ConstructedInterpolants, 8 QuantifiedInterpolants, 1285 SizeOfPredicates, 19 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 22:40:35,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd5d09c-bba8-4a62-bf78-e093db632543/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE