./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.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_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/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_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/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_5b8530d6-929f-4bfb-9226-685d2e83a598/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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- 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 [2022-11-26 00:36:23,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:36:23,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:36:23,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:36:23,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:36:23,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:36:23,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:36:23,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:36:23,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:36:23,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:36:23,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:36:23,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:36:23,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:36:23,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:36:23,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:36:23,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:36:23,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:36:23,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:36:23,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:36:23,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:36:23,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:36:23,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:36:23,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:36:23,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:36:23,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:36:23,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:36:23,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:36:23,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:36:23,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:36:23,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:36:23,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:36:23,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:36:23,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:36:23,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:36:23,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:36:23,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:36:23,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:36:23,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:36:23,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:36:23,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:36:23,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:36:23,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:36:23,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:36:23,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:36:23,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:36:23,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:36:23,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:36:23,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:36:23,860 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:36:23,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:36:23,860 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:36:23,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:36:23,861 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:36:23,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:36:23,862 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:36:23,862 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:36:23,862 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:36:23,862 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:36:23,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:36:23,863 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:36:23,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:36:23,864 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:36:23,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:36:23,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:36:23,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:36:23,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:36:23,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:36:23,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:36:23,866 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:36:23,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:36:23,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:36:23,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:36:23,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:36:23,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:36:23,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:23,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:36:23,868 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:36:23,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:36:23,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:36:23,869 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:36:23,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:36:23,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:36:23,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:36:23,870 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_5b8530d6-929f-4bfb-9226-685d2e83a598/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-11-26 00:36:24,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:36:24,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:36:24,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:36:24,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:36:24,215 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:36:24,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-26 00:36:27,143 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:36:27,371 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:36:27,372 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-26 00:36:27,380 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/data/305917e11/2716a2045a5542f3a6628bc9e51ec9de/FLAG6ca20209c [2022-11-26 00:36:27,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/data/305917e11/2716a2045a5542f3a6628bc9e51ec9de [2022-11-26 00:36:27,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:36:27,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:36:27,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:27,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:36:27,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:36:27,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f735894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27, skipping insertion in model container [2022-11-26 00:36:27,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:36:27,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:36:27,696 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_5b8530d6-929f-4bfb-9226-685d2e83a598/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-26 00:36:27,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:27,727 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:36:27,754 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_5b8530d6-929f-4bfb-9226-685d2e83a598/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-26 00:36:27,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:27,771 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:36:27,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27 WrapperNode [2022-11-26 00:36:27,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:27,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:27,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:36:27,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:36:27,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,821 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 197 [2022-11-26 00:36:27,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:27,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:36:27,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:36:27,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:36:27,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:36:27,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:36:27,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:36:27,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:36:27,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (1/1) ... [2022-11-26 00:36:27,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:27,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:36:27,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:36:27,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:36:27,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:36:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-26 00:36:27,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-26 00:36:27,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-26 00:36:27,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-26 00:36:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-26 00:36:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-26 00:36:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:36:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:36:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:36:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:36:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:36:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:36:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:36:27,974 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:36:28,138 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:36:28,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:36:28,539 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:36:28,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:36:28,552 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:36:28,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:28 BoogieIcfgContainer [2022-11-26 00:36:28,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:36:28,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:36:28,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:36:28,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:36:28,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:36:27" (1/3) ... [2022-11-26 00:36:28,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4743ae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:28, skipping insertion in model container [2022-11-26 00:36:28,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:27" (2/3) ... [2022-11-26 00:36:28,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4743ae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:28, skipping insertion in model container [2022-11-26 00:36:28,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:28" (3/3) ... [2022-11-26 00:36:28,575 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-11-26 00:36:28,588 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:36:28,599 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:36:28,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:36:28,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:36:28,744 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-26 00:36:28,782 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:36:28,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 256 transitions, 536 flow [2022-11-26 00:36:28,801 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 256 transitions, 536 flow [2022-11-26 00:36:28,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 256 transitions, 536 flow [2022-11-26 00:36:29,029 INFO L130 PetriNetUnfolder]: 20/253 cut-off events. [2022-11-26 00:36:29,030 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-26 00:36:29,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 20/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 561 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-11-26 00:36:29,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 18600 [2022-11-26 00:36:40,242 INFO L134 LiptonReduction]: Checked pairs total: 17751 [2022-11-26 00:36:40,243 INFO L136 LiptonReduction]: Total number of compositions: 323 [2022-11-26 00:36:40,260 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2022-11-26 00:36:40,290 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2022-11-26 00:36:40,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:36:40,336 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;@f630b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:36:40,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-26 00:36:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2022-11-26 00:36:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:36:40,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:40,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:40,347 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)] === [2022-11-26 00:36:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1546233086, now seen corresponding path program 1 times [2022-11-26 00:36:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:40,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948968375] [2022-11-26 00:36:40,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:40,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:45,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948968375] [2022-11-26 00:36:45,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948968375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:45,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:45,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:36:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062767966] [2022-11-26 00:36:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:45,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:36:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:36:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:36:45,091 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:45,830 INFO L93 Difference]: Finished difference Result 63 states and 100 transitions. [2022-11-26 00:36:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:36:45,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-26 00:36:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:45,842 INFO L225 Difference]: With dead ends: 63 [2022-11-26 00:36:45,842 INFO L226 Difference]: Without dead ends: 52 [2022-11-26 00:36:45,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:36:45,847 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:45,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:36:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-26 00:36:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2022-11-26 00:36:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.813953488372093) internal successors, (78), 43 states have internal predecessors, (78), 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) [2022-11-26 00:36:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 78 transitions. [2022-11-26 00:36:45,885 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 78 transitions. Word has length 16 [2022-11-26 00:36:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:45,886 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 78 transitions. [2022-11-26 00:36:45,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2022-11-26 00:36:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:36:45,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:45,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:45,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:36:45,888 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)] === [2022-11-26 00:36:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash -685920842, now seen corresponding path program 2 times [2022-11-26 00:36:45,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:45,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899982716] [2022-11-26 00:36:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:49,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:49,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899982716] [2022-11-26 00:36:49,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899982716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:49,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:49,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:36:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464198916] [2022-11-26 00:36:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:36:49,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:36:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:36:49,863 INFO L87 Difference]: Start difference. First operand 44 states and 78 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:50,690 INFO L93 Difference]: Finished difference Result 61 states and 94 transitions. [2022-11-26 00:36:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:36:50,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-26 00:36:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:50,692 INFO L225 Difference]: With dead ends: 61 [2022-11-26 00:36:50,692 INFO L226 Difference]: Without dead ends: 50 [2022-11-26 00:36:50,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:36:50,693 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:50,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:36:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-26 00:36:50,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2022-11-26 00:36:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 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) [2022-11-26 00:36:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 73 transitions. [2022-11-26 00:36:50,701 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 73 transitions. Word has length 16 [2022-11-26 00:36:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:50,701 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 73 transitions. [2022-11-26 00:36:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2022-11-26 00:36:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:36:50,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:50,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:36:50,703 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)] === [2022-11-26 00:36:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash 542168148, now seen corresponding path program 3 times [2022-11-26 00:36:50,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915352653] [2022-11-26 00:36:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:53,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:53,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915352653] [2022-11-26 00:36:53,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915352653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:53,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:53,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:36:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464483655] [2022-11-26 00:36:53,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:53,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:36:53,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:36:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:36:53,318 INFO L87 Difference]: Start difference. First operand 42 states and 73 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:53,983 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2022-11-26 00:36:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:36:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-26 00:36:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:53,985 INFO L225 Difference]: With dead ends: 57 [2022-11-26 00:36:53,985 INFO L226 Difference]: Without dead ends: 46 [2022-11-26 00:36:53,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:36:53,986 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:53,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:36:53,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-26 00:36:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2022-11-26 00:36:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 37 states have internal predecessors, (62), 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) [2022-11-26 00:36:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2022-11-26 00:36:53,991 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 16 [2022-11-26 00:36:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:53,993 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2022-11-26 00:36:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2022-11-26 00:36:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:36:53,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:53,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:53,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:36:53,998 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)] === [2022-11-26 00:36:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash 22278864, now seen corresponding path program 4 times [2022-11-26 00:36:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:53,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931585217] [2022-11-26 00:36:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:54,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:36:56,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:56,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931585217] [2022-11-26 00:36:56,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931585217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:36:56,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:36:56,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:36:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945838764] [2022-11-26 00:36:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:36:56,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:36:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:36:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:36:56,740 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:57,362 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2022-11-26 00:36:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:36:57,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-26 00:36:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:57,364 INFO L225 Difference]: With dead ends: 53 [2022-11-26 00:36:57,364 INFO L226 Difference]: Without dead ends: 30 [2022-11-26 00:36:57,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:36:57,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:57,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:36:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-26 00:36:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-26 00:36:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 states have internal predecessors, (43), 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) [2022-11-26 00:36:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2022-11-26 00:36:57,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 16 [2022-11-26 00:36:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:57,372 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2022-11-26 00:36:57,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:36:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2022-11-26 00:36:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:36:57,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:57,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:57,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:36:57,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-26 00:36:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash -945283282, now seen corresponding path program 5 times [2022-11-26 00:36:57,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:57,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470632300] [2022-11-26 00:36:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:02,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:02,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470632300] [2022-11-26 00:37:02,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470632300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:02,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:02,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:37:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387922300] [2022-11-26 00:37:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:02,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:37:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:37:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:37:02,086 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:37:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:02,792 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-11-26 00:37:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:02,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-26 00:37:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:02,794 INFO L225 Difference]: With dead ends: 37 [2022-11-26 00:37:02,794 INFO L226 Difference]: Without dead ends: 28 [2022-11-26 00:37:02,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:37:02,796 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:02,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:37:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-26 00:37:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-26 00:37:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 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) [2022-11-26 00:37:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-11-26 00:37:02,800 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 16 [2022-11-26 00:37:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:02,800 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-11-26 00:37:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:37:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-11-26 00:37:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:37:02,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:02,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:37:02,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-26 00:37:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1639070706, now seen corresponding path program 6 times [2022-11-26 00:37:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:02,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424574480] [2022-11-26 00:37:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:05,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:05,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424574480] [2022-11-26 00:37:05,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424574480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:05,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:05,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:37:05,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085580076] [2022-11-26 00:37:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:37:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:37:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:37:05,416 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:37:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:05,974 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-26 00:37:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:05,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-26 00:37:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:05,975 INFO L225 Difference]: With dead ends: 27 [2022-11-26 00:37:05,975 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:37:05,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:37:05,977 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:05,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:37:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:37:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:37:05,978 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) [2022-11-26 00:37:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:37:05,978 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-26 00:37:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:05,978 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:37:05,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-26 00:37:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:37:05,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:37:05,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-26 00:37:05,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-26 00:37:05,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-26 00:37:05,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-26 00:37:05,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:37:05,989 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2022-11-26 00:37:05,992 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-26 00:37:05,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:37:05,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:37:05 BasicIcfg [2022-11-26 00:37:05,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:37:05,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:37:05,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:37:05,996 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:37:05,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:28" (3/4) ... [2022-11-26 00:37:06,000 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:37:06,007 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-26 00:37:06,007 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-26 00:37:06,007 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-26 00:37:06,014 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-26 00:37:06,014 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-26 00:37:06,014 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-26 00:37:06,015 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:37:06,067 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:37:06,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:37:06,068 INFO L158 Benchmark]: Toolchain (without parser) took 38668.69ms. Allocated memory was 174.1MB in the beginning and 557.8MB in the end (delta: 383.8MB). Free memory was 135.9MB in the beginning and 439.0MB in the end (delta: -303.0MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,068 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:37:06,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.85ms. Allocated memory is still 174.1MB. Free memory was 135.9MB in the beginning and 124.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.97ms. Allocated memory is still 174.1MB. Free memory was 124.1MB in the beginning and 122.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,069 INFO L158 Benchmark]: Boogie Preprocessor took 33.29ms. Allocated memory is still 174.1MB. Free memory was 122.0MB in the beginning and 120.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,070 INFO L158 Benchmark]: RCFGBuilder took 709.16ms. Allocated memory is still 174.1MB. Free memory was 120.5MB in the beginning and 100.3MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,071 INFO L158 Benchmark]: TraceAbstraction took 37427.02ms. Allocated memory was 174.1MB in the beginning and 557.8MB in the end (delta: 383.8MB). Free memory was 99.0MB in the beginning and 442.1MB in the end (delta: -343.2MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,071 INFO L158 Benchmark]: Witness Printer took 72.21ms. Allocated memory is still 557.8MB. Free memory was 442.1MB in the beginning and 439.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:37:06,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.85ms. Allocated memory is still 174.1MB. Free memory was 135.9MB in the beginning and 124.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.97ms. Allocated memory is still 174.1MB. Free memory was 124.1MB in the beginning and 122.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.29ms. Allocated memory is still 174.1MB. Free memory was 122.0MB in the beginning and 120.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 709.16ms. Allocated memory is still 174.1MB. Free memory was 120.5MB in the beginning and 100.3MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 37427.02ms. Allocated memory was 174.1MB in the beginning and 557.8MB in the end (delta: 383.8MB). Free memory was 99.0MB in the beginning and 442.1MB in the end (delta: -343.2MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Witness Printer took 72.21ms. Allocated memory is still 557.8MB. Free memory was 442.1MB in the beginning and 439.0MB in the end (delta: 3.2MB). 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: 11.4s, 246 PlacesBefore, 30 PlacesAfterwards, 256 TransitionsBefore, 20 TransitionsAfterwards, 18600 CoEnabledTransitionPairs, 9 FixpointIterations, 79 TrivialSequentialCompositions, 148 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 71 ConcurrentYvCompositions, 20 ChoiceCompositions, 323 TotalNumberOfCompositions, 17751 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17751, independent: 17751, independent conditional: 0, independent unconditional: 17751, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14783, independent: 14783, independent conditional: 0, independent unconditional: 14783, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14783, independent: 14783, independent conditional: 0, independent unconditional: 14783, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17751, independent: 2968, independent conditional: 0, independent unconditional: 2968, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 14783, unknown conditional: 0, unknown unconditional: 14783] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: 84]: 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, 375 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 37.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 447 IncrementalHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 447 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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! [2022-11-26 00:37:06,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8530d6-929f-4bfb-9226-685d2e83a598/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE