./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:56:22,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:56:22,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:56:22,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:56:22,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:56:22,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:56:22,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:56:22,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:56:22,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:56:22,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:56:22,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:56:22,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:56:22,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:56:22,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:56:22,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:56:22,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:56:22,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:56:22,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:56:22,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:56:22,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:56:22,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:56:22,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:56:22,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:56:22,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:56:22,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:56:22,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:56:22,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:56:22,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:56:22,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:56:22,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:56:22,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:56:22,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:56:22,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:56:22,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:56:22,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:56:22,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:56:22,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:56:22,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:56:22,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:56:22,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:56:22,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:56:22,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:56:22,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:56:22,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:56:22,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:56:22,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:56:22,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:56:22,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:56:22,909 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:56:22,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:56:22,909 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:56:22,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:56:22,910 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:56:22,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:56:22,911 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:56:22,911 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:56:22,911 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:56:22,912 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:56:22,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:56:22,912 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:56:22,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:56:22,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:56:22,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:56:22,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:56:22,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:56:22,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:56:22,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:56:22,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:56:22,916 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:56:22,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:56:22,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:56:22,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:56:22,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:56:22,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:56:22,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:56:22,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:56:22,918 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:56:22,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:56:22,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:56:22,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:56:22,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:56:22,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:56:22,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:56:22,920 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_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-20 20:56:23,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:56:23,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:56:23,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:56:23,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:56:23,267 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:56:23,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 20:56:26,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:56:26,537 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:56:26,538 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 20:56:26,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/data/deffa8ba6/e2f35d1a1fc94680b4046099a1b5425a/FLAG6ed80e9d8 [2022-11-20 20:56:26,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/data/deffa8ba6/e2f35d1a1fc94680b4046099a1b5425a [2022-11-20 20:56:26,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:56:26,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:56:26,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:56:26,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:56:26,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:56:26,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f624b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26, skipping insertion in model container [2022-11-20 20:56:26,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:56:26,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:56:26,806 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_f35fb9e8-a11f-4aef-983a-a6ed6524497c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 20:56:26,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:56:26,824 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:56:26,859 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_f35fb9e8-a11f-4aef-983a-a6ed6524497c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 20:56:26,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:56:26,878 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:56:26,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26 WrapperNode [2022-11-20 20:56:26,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:56:26,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:56:26,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:56:26,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:56:26,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,947 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 456 [2022-11-20 20:56:26,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:56:26,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:56:26,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:56:26,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:56:26,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:26,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:56:27,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:56:27,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:56:27,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:56:27,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (1/1) ... [2022-11-20 20:56:27,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:56:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:27,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:56:27,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:56:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:56:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:56:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:56:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:56:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 20:56:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 20:56:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 20:56:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 20:56:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 20:56:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 20:56:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 20:56:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 20:56:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:56:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 20:56:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 20:56:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:56:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:56:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:56:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:56:27,116 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:56:27,285 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:56:27,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:56:28,122 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:56:28,514 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:56:28,514 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 20:56:28,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:56:28 BoogieIcfgContainer [2022-11-20 20:56:28,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:56:28,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:56:28,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:56:28,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:56:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:56:26" (1/3) ... [2022-11-20 20:56:28,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296d604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:56:28, skipping insertion in model container [2022-11-20 20:56:28,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:56:26" (2/3) ... [2022-11-20 20:56:28,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296d604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:56:28, skipping insertion in model container [2022-11-20 20:56:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:56:28" (3/3) ... [2022-11-20 20:56:28,536 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-20 20:56:28,544 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 20:56:28,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:56:28,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:56:28,555 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:56:28,681 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 20:56:28,730 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:56:28,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 328 transitions, 688 flow [2022-11-20 20:56:28,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 328 transitions, 688 flow [2022-11-20 20:56:28,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 328 transitions, 688 flow [2022-11-20 20:56:28,905 INFO L130 PetriNetUnfolder]: 25/324 cut-off events. [2022-11-20 20:56:28,906 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 20:56:28,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 324 events. 25/324 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 284. Up to 2 conditions per place. [2022-11-20 20:56:28,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 2544 [2022-11-20 20:56:46,052 INFO L134 LiptonReduction]: Checked pairs total: 6387 [2022-11-20 20:56:46,052 INFO L136 LiptonReduction]: Total number of compositions: 329 [2022-11-20 20:56:46,061 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 46 transitions, 124 flow [2022-11-20 20:56:46,138 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 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) [2022-11-20 20:56:46,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:56:46,163 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;@2b6689f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:56:46,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 20:56:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 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) [2022-11-20 20:56:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 20:56:46,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:46,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:46,185 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 2 more)] === [2022-11-20 20:56:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash 624151413, now seen corresponding path program 1 times [2022-11-20 20:56:46,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:46,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036455548] [2022-11-20 20:56:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:46,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:56:47,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:47,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036455548] [2022-11-20 20:56:47,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036455548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:47,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:47,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 20:56:47,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844251072] [2022-11-20 20:56:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:47,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:47,049 INFO L87 Difference]: Start difference. First operand has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 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 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-11-20 20:56:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:47,205 INFO L93 Difference]: Finished difference Result 765 states and 3110 transitions. [2022-11-20 20:56:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:47,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2022-11-20 20:56:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:47,239 INFO L225 Difference]: With dead ends: 765 [2022-11-20 20:56:47,240 INFO L226 Difference]: Without dead ends: 756 [2022-11-20 20:56:47,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:47,245 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:47,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:47,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-11-20 20:56:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 726. [2022-11-20 20:56:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 4.085517241379311) internal successors, (2962), 725 states have internal predecessors, (2962), 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) [2022-11-20 20:56:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 2962 transitions. [2022-11-20 20:56:47,358 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 2962 transitions. Word has length 25 [2022-11-20 20:56:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:47,358 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 2962 transitions. [2022-11-20 20:56:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-11-20 20:56:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 2962 transitions. [2022-11-20 20:56:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 20:56:47,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:47,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:56:47,365 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 2 more)] === [2022-11-20 20:56:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash -427606570, now seen corresponding path program 1 times [2022-11-20 20:56:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:47,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071050135] [2022-11-20 20:56:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:56:47,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:47,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071050135] [2022-11-20 20:56:47,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071050135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:47,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:47,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405191473] [2022-11-20 20:56:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:47,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:47,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:47,577 INFO L87 Difference]: Start difference. First operand 726 states and 2962 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-20 20:56:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:47,847 INFO L93 Difference]: Finished difference Result 1071 states and 3868 transitions. [2022-11-20 20:56:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:56:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2022-11-20 20:56:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:47,854 INFO L225 Difference]: With dead ends: 1071 [2022-11-20 20:56:47,855 INFO L226 Difference]: Without dead ends: 727 [2022-11-20 20:56:47,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:47,858 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:47,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:56:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-20 20:56:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2022-11-20 20:56:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 4.081267217630854) internal successors, (2963), 726 states have internal predecessors, (2963), 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) [2022-11-20 20:56:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 2963 transitions. [2022-11-20 20:56:47,944 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 2963 transitions. Word has length 27 [2022-11-20 20:56:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:47,944 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 2963 transitions. [2022-11-20 20:56:47,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-20 20:56:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 2963 transitions. [2022-11-20 20:56:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:56:47,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:47,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:47,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:56:47,952 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 2 more)] === [2022-11-20 20:56:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1177062012, now seen corresponding path program 1 times [2022-11-20 20:56:47,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:47,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327542207] [2022-11-20 20:56:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:47,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:56:48,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:48,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327542207] [2022-11-20 20:56:48,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327542207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:48,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:48,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961308966] [2022-11-20 20:56:48,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:48,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:48,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:48,329 INFO L87 Difference]: Start difference. First operand 727 states and 2963 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 20:56:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:48,484 INFO L93 Difference]: Finished difference Result 1363 states and 5446 transitions. [2022-11-20 20:56:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-11-20 20:56:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:48,496 INFO L225 Difference]: With dead ends: 1363 [2022-11-20 20:56:48,496 INFO L226 Difference]: Without dead ends: 1309 [2022-11-20 20:56:48,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:48,502 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:48,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-20 20:56:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1155. [2022-11-20 20:56:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 4.0823223570190645) internal successors, (4711), 1154 states have internal predecessors, (4711), 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) [2022-11-20 20:56:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 4711 transitions. [2022-11-20 20:56:48,571 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 4711 transitions. Word has length 28 [2022-11-20 20:56:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:48,572 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 4711 transitions. [2022-11-20 20:56:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 20:56:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 4711 transitions. [2022-11-20 20:56:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:56:48,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:48,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:48,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:56:48,578 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 2 more)] === [2022-11-20 20:56:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1225427956, now seen corresponding path program 1 times [2022-11-20 20:56:48,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:48,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075349525] [2022-11-20 20:56:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:48,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:56:48,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:48,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075349525] [2022-11-20 20:56:48,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075349525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:48,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:48,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061452264] [2022-11-20 20:56:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:48,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:48,890 INFO L87 Difference]: Start difference. First operand 1155 states and 4711 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 20:56:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:49,067 INFO L93 Difference]: Finished difference Result 1149 states and 4470 transitions. [2022-11-20 20:56:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:49,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-11-20 20:56:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:49,079 INFO L225 Difference]: With dead ends: 1149 [2022-11-20 20:56:49,079 INFO L226 Difference]: Without dead ends: 1133 [2022-11-20 20:56:49,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:49,083 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-11-20 20:56:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1097. [2022-11-20 20:56:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 3.9708029197080292) internal successors, (4352), 1096 states have internal predecessors, (4352), 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) [2022-11-20 20:56:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 4352 transitions. [2022-11-20 20:56:49,155 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 4352 transitions. Word has length 28 [2022-11-20 20:56:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:49,157 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 4352 transitions. [2022-11-20 20:56:49,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 20:56:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 4352 transitions. [2022-11-20 20:56:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:56:49,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:49,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:56:49,170 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 2 more)] === [2022-11-20 20:56:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 903907506, now seen corresponding path program 1 times [2022-11-20 20:56:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:49,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160322486] [2022-11-20 20:56:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:56:49,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:49,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160322486] [2022-11-20 20:56:49,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160322486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:49,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:49,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:56:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87996372] [2022-11-20 20:56:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:49,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:49,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:49,459 INFO L87 Difference]: Start difference. First operand 1097 states and 4352 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 20:56:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:49,582 INFO L93 Difference]: Finished difference Result 983 states and 3885 transitions. [2022-11-20 20:56:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:49,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-11-20 20:56:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:49,590 INFO L225 Difference]: With dead ends: 983 [2022-11-20 20:56:49,591 INFO L226 Difference]: Without dead ends: 959 [2022-11-20 20:56:49,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:49,592 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-20 20:56:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 957. [2022-11-20 20:56:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 4.00418410041841) internal successors, (3828), 956 states have internal predecessors, (3828), 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) [2022-11-20 20:56:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3828 transitions. [2022-11-20 20:56:49,640 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3828 transitions. Word has length 28 [2022-11-20 20:56:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:49,640 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 3828 transitions. [2022-11-20 20:56:49,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-11-20 20:56:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3828 transitions. [2022-11-20 20:56:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 20:56:49,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:49,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:49,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:56:49,646 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 2 more)] === [2022-11-20 20:56:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash 85733475, now seen corresponding path program 1 times [2022-11-20 20:56:49,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:49,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905150980] [2022-11-20 20:56:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:49,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:56:49,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:49,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905150980] [2022-11-20 20:56:49,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905150980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:49,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:49,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:56:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664919292] [2022-11-20 20:56:49,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:49,966 INFO L87 Difference]: Start difference. First operand 957 states and 3828 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-11-20 20:56:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:50,140 INFO L93 Difference]: Finished difference Result 1115 states and 4218 transitions. [2022-11-20 20:56:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:56:50,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2022-11-20 20:56:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:50,150 INFO L225 Difference]: With dead ends: 1115 [2022-11-20 20:56:50,150 INFO L226 Difference]: Without dead ends: 959 [2022-11-20 20:56:50,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:50,154 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:50,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-20 20:56:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 958. [2022-11-20 20:56:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 4.001044932079415) internal successors, (3829), 957 states have internal predecessors, (3829), 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) [2022-11-20 20:56:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3829 transitions. [2022-11-20 20:56:50,197 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3829 transitions. Word has length 32 [2022-11-20 20:56:50,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:50,199 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 3829 transitions. [2022-11-20 20:56:50,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-11-20 20:56:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3829 transitions. [2022-11-20 20:56:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 20:56:50,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:50,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:50,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:56:50,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash 907156509, now seen corresponding path program 1 times [2022-11-20 20:56:50,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:50,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985538811] [2022-11-20 20:56:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:56:50,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985538811] [2022-11-20 20:56:50,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985538811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:50,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:50,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:56:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385775304] [2022-11-20 20:56:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:50,500 INFO L87 Difference]: Start difference. First operand 958 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-11-20 20:56:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:50,661 INFO L93 Difference]: Finished difference Result 1093 states and 4202 transitions. [2022-11-20 20:56:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:56:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2022-11-20 20:56:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:50,669 INFO L225 Difference]: With dead ends: 1093 [2022-11-20 20:56:50,669 INFO L226 Difference]: Without dead ends: 960 [2022-11-20 20:56:50,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:50,671 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:50,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-20 20:56:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 959. [2022-11-20 20:56:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 3.997912317327766) internal successors, (3830), 958 states have internal predecessors, (3830), 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) [2022-11-20 20:56:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 3830 transitions. [2022-11-20 20:56:50,715 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 3830 transitions. Word has length 33 [2022-11-20 20:56:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 3830 transitions. [2022-11-20 20:56:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-11-20 20:56:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 3830 transitions. [2022-11-20 20:56:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 20:56:50,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:50,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:50,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:56:50,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:50,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1346895945, now seen corresponding path program 1 times [2022-11-20 20:56:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:50,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38180223] [2022-11-20 20:56:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:56:51,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:51,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38180223] [2022-11-20 20:56:51,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38180223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:51,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:51,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:56:51,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008143723] [2022-11-20 20:56:51,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:56:51,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:51,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:56:51,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:56:51,022 INFO L87 Difference]: Start difference. First operand 959 states and 3830 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-20 20:56:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:51,210 INFO L93 Difference]: Finished difference Result 1337 states and 5140 transitions. [2022-11-20 20:56:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:56:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-20 20:56:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:51,220 INFO L225 Difference]: With dead ends: 1337 [2022-11-20 20:56:51,220 INFO L226 Difference]: Without dead ends: 960 [2022-11-20 20:56:51,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:51,223 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:51,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:56:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-20 20:56:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2022-11-20 20:56:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.994786235662148) internal successors, (3831), 959 states have internal predecessors, (3831), 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) [2022-11-20 20:56:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3831 transitions. [2022-11-20 20:56:51,274 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3831 transitions. Word has length 34 [2022-11-20 20:56:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:51,274 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 3831 transitions. [2022-11-20 20:56:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-20 20:56:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3831 transitions. [2022-11-20 20:56:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 20:56:51,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:51,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:51,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:56:51,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1904108388, now seen corresponding path program 1 times [2022-11-20 20:56:51,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:51,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139666675] [2022-11-20 20:56:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:51,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:56:51,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139666675] [2022-11-20 20:56:51,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139666675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:51,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:51,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:56:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164730240] [2022-11-20 20:56:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:56:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:56:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:51,647 INFO L87 Difference]: Start difference. First operand 960 states and 3831 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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) [2022-11-20 20:56:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:51,742 INFO L93 Difference]: Finished difference Result 580 states and 2328 transitions. [2022-11-20 20:56:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:56:51,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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 35 [2022-11-20 20:56:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:51,748 INFO L225 Difference]: With dead ends: 580 [2022-11-20 20:56:51,748 INFO L226 Difference]: Without dead ends: 572 [2022-11-20 20:56:51,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:56:51,750 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:51,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:51,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-20 20:56:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2022-11-20 20:56:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 4.042031523642732) internal successors, (2308), 571 states have internal predecessors, (2308), 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) [2022-11-20 20:56:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 2308 transitions. [2022-11-20 20:56:51,775 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 2308 transitions. Word has length 35 [2022-11-20 20:56:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:51,775 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 2308 transitions. [2022-11-20 20:56:51,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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) [2022-11-20 20:56:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 2308 transitions. [2022-11-20 20:56:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 20:56:51,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:51,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:56:51,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1792555083, now seen corresponding path program 1 times [2022-11-20 20:56:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:51,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419878023] [2022-11-20 20:56:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:56:52,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:52,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419878023] [2022-11-20 20:56:52,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419878023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:52,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:52,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:56:52,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210388933] [2022-11-20 20:56:52,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:56:52,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:52,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:56:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:52,196 INFO L87 Difference]: Start difference. First operand 572 states and 2308 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-20 20:56:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:52,380 INFO L93 Difference]: Finished difference Result 1620 states and 6530 transitions. [2022-11-20 20:56:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:52,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2022-11-20 20:56:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:52,392 INFO L225 Difference]: With dead ends: 1620 [2022-11-20 20:56:52,393 INFO L226 Difference]: Without dead ends: 1588 [2022-11-20 20:56:52,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:52,394 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:52,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:56:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-11-20 20:56:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1316. [2022-11-20 20:56:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 4.151330798479087) internal successors, (5459), 1315 states have internal predecessors, (5459), 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) [2022-11-20 20:56:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5459 transitions. [2022-11-20 20:56:52,455 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5459 transitions. Word has length 37 [2022-11-20 20:56:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:52,456 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 5459 transitions. [2022-11-20 20:56:52,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-20 20:56:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5459 transitions. [2022-11-20 20:56:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 20:56:52,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:52,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:52,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:56:52,462 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1723298203, now seen corresponding path program 1 times [2022-11-20 20:56:52,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709972441] [2022-11-20 20:56:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:56:52,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:52,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709972441] [2022-11-20 20:56:52,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709972441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:56:52,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019535807] [2022-11-20 20:56:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:52,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:52,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:52,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:56:52,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:56:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:53,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 20:56:53,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:56:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:56:53,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:56:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 20:56:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019535807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:56:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [637334234] [2022-11-20 20:56:53,383 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-20 20:56:53,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:56:53,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 20:56:53,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768274969] [2022-11-20 20:56:53,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:56:53,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:56:53,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:56:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:56:53,388 INFO L87 Difference]: Start difference. First operand 1316 states and 5459 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 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) [2022-11-20 20:56:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:53,705 INFO L93 Difference]: Finished difference Result 1380 states and 5581 transitions. [2022-11-20 20:56:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:56:53,706 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 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) Word has length 41 [2022-11-20 20:56:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:53,716 INFO L225 Difference]: With dead ends: 1380 [2022-11-20 20:56:53,717 INFO L226 Difference]: Without dead ends: 1317 [2022-11-20 20:56:53,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:56:53,718 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:53,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:56:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-11-20 20:56:53,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2022-11-20 20:56:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 4.148936170212766) internal successors, (5460), 1316 states have internal predecessors, (5460), 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) [2022-11-20 20:56:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 5460 transitions. [2022-11-20 20:56:53,772 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 5460 transitions. Word has length 41 [2022-11-20 20:56:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:53,772 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 5460 transitions. [2022-11-20 20:56:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 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) [2022-11-20 20:56:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 5460 transitions. [2022-11-20 20:56:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 20:56:53,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:53,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:53,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:56:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:53,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1768858561, now seen corresponding path program 2 times [2022-11-20 20:56:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:53,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240997465] [2022-11-20 20:56:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:53,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:56:54,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:54,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240997465] [2022-11-20 20:56:54,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240997465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:56:54,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344437111] [2022-11-20 20:56:54,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:56:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:54,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:54,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:56:54,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:56:54,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 20:56:54,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:56:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 20:56:54,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:56:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:56:54,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:56:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:56:54,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344437111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:56:54,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811961243] [2022-11-20 20:56:54,972 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-20 20:56:54,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:56:54,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-11-20 20:56:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830459620] [2022-11-20 20:56:54,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:56:54,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:56:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:56:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:56:54,987 INFO L87 Difference]: Start difference. First operand 1317 states and 5460 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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) [2022-11-20 20:56:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:55,621 INFO L93 Difference]: Finished difference Result 2119 states and 7848 transitions. [2022-11-20 20:56:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 20:56:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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 42 [2022-11-20 20:56:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:55,633 INFO L225 Difference]: With dead ends: 2119 [2022-11-20 20:56:55,633 INFO L226 Difference]: Without dead ends: 1319 [2022-11-20 20:56:55,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:56:55,634 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:55,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:56:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-11-20 20:56:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2022-11-20 20:56:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 4.144157814871017) internal successors, (5462), 1318 states have internal predecessors, (5462), 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) [2022-11-20 20:56:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 5462 transitions. [2022-11-20 20:56:55,688 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 5462 transitions. Word has length 42 [2022-11-20 20:56:55,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:55,689 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 5462 transitions. [2022-11-20 20:56:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 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) [2022-11-20 20:56:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 5462 transitions. [2022-11-20 20:56:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 20:56:55,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:55,695 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:55,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:56:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:55,902 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash -778423000, now seen corresponding path program 3 times [2022-11-20 20:56:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:55,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755875897] [2022-11-20 20:56:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 20:56:56,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:56,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755875897] [2022-11-20 20:56:56,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755875897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:56:56,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600860037] [2022-11-20 20:56:56,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:56:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:56,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:56:56,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:56:56,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:56:56,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:56:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:56:56,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:56:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:56:56,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:56:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:56:57,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600860037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:56:57,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167963289] [2022-11-20 20:56:57,176 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-20 20:56:57,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:56:57,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-11-20 20:56:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286872271] [2022-11-20 20:56:57,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:56:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 20:56:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 20:56:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:56:57,182 INFO L87 Difference]: Start difference. First operand 1319 states and 5462 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2022-11-20 20:56:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:57,762 INFO L93 Difference]: Finished difference Result 5675 states and 23334 transitions. [2022-11-20 20:56:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:56:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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 44 [2022-11-20 20:56:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:57,795 INFO L225 Difference]: With dead ends: 5675 [2022-11-20 20:56:57,795 INFO L226 Difference]: Without dead ends: 5597 [2022-11-20 20:56:57,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:56:57,796 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 392 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:57,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 0 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:56:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2022-11-20 20:56:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 3879. [2022-11-20 20:56:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 3878 states have (on average 4.481433728726148) internal successors, (17379), 3878 states have internal predecessors, (17379), 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) [2022-11-20 20:56:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 17379 transitions. [2022-11-20 20:56:57,982 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 17379 transitions. Word has length 44 [2022-11-20 20:56:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:57,982 INFO L495 AbstractCegarLoop]: Abstraction has 3879 states and 17379 transitions. [2022-11-20 20:56:57,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2022-11-20 20:56:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 17379 transitions. [2022-11-20 20:56:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 20:56:57,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:57,997 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:58,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:56:58,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 20:56:58,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1641941256, now seen corresponding path program 1 times [2022-11-20 20:56:58,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:58,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999643418] [2022-11-20 20:56:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:58,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 20:56:58,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:58,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999643418] [2022-11-20 20:56:58,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999643418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:58,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:56:58,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:56:58,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802542516] [2022-11-20 20:56:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:56:58,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:56:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:58,686 INFO L87 Difference]: Start difference. First operand 3879 states and 17379 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-11-20 20:56:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:58,901 INFO L93 Difference]: Finished difference Result 8477 states and 37360 transitions. [2022-11-20 20:56:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:56:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 44 [2022-11-20 20:56:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:58,953 INFO L225 Difference]: With dead ends: 8477 [2022-11-20 20:56:58,953 INFO L226 Difference]: Without dead ends: 8423 [2022-11-20 20:56:58,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:56:58,954 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:58,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:56:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8423 states. [2022-11-20 20:56:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8423 to 6621. [2022-11-20 20:56:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6621 states, 6620 states have (on average 4.640030211480362) internal successors, (30717), 6620 states have internal predecessors, (30717), 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) [2022-11-20 20:56:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6621 states to 6621 states and 30717 transitions. [2022-11-20 20:56:59,318 INFO L78 Accepts]: Start accepts. Automaton has 6621 states and 30717 transitions. Word has length 44 [2022-11-20 20:56:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:59,319 INFO L495 AbstractCegarLoop]: Abstraction has 6621 states and 30717 transitions. [2022-11-20 20:56:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-11-20 20:56:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6621 states and 30717 transitions. [2022-11-20 20:56:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 20:56:59,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:59,328 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:59,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:56:59,328 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 20:56:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:59,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1003203272, now seen corresponding path program 1 times [2022-11-20 20:56:59,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:59,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830767756] [2022-11-20 20:56:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:59,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:57:11,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:57:11,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830767756] [2022-11-20 20:57:11,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830767756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:57:11,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934577606] [2022-11-20 20:57:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:57:11,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:57:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:11,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:57:11,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f35fb9e8-a11f-4aef-983a-a6ed6524497c/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:57:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:57:11,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-20 20:57:11,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:57:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 20:57:15,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:58:27,797 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification that was a NOOP. DAG size: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:00:41,904 WARN L233 SmtUtils]: Spent 2.15m on a formula simplification. DAG size of input: 118 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:01:20,171 WARN L233 SmtUtils]: Spent 38.09s on a formula simplification. DAG size of input: 1427 DAG size of output: 1397 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 21:01:20,178 INFO L321 Elim1Store]: treesize reduction 150, result has 97.5 percent of original size [2022-11-20 21:01:20,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 351 case distinctions, treesize of input 522 treesize of output 6036