./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:31:42,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:31:42,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:31:42,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:31:42,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:31:42,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:31:42,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:31:42,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:31:42,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:31:42,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:31:42,915 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:31:42,915 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:31:42,915 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:31:42,916 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:31:42,916 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:31:42,916 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:31:42,918 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:31:42,919 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:31:42,919 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:31:42,919 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:31:42,920 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:31:42,921 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:31:42,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:31:42,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:31:42,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:31:42,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:31:42,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:31:42,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:31:42,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:31:42,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:31:42,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:31:42,927 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:31:42,927 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:31:42,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:31:42,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:31:42,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:31:42,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:31:42,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:31:42,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:42,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:31:42,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:31:42,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:31:42,931 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:31:42,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:31:42,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:31:42,932 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:31:42,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:31:42,933 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2024-11-02 12:31:43,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:31:43,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:31:43,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:31:43,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:31:43,331 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:31:43,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c Unable to find full path for "g++" [2024-11-02 12:31:45,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:31:46,025 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:31:46,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-02 12:31:46,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/data/2eebc66f6/82a80f8cd59c4ff7904d24d09dac9fbd/FLAGf02f79e68 [2024-11-02 12:31:46,066 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/data/2eebc66f6/82a80f8cd59c4ff7904d24d09dac9fbd [2024-11-02 12:31:46,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:31:46,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:31:46,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:46,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:31:46,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:31:46,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d00d539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46, skipping insertion in model container [2024-11-02 12:31:46,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:31:46,441 WARN L251 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_e9503130-f7a9-45e0-b420-a8f23803d5e1/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2874,2887] [2024-11-02 12:31:46,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:46,480 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:31:46,519 WARN L251 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_e9503130-f7a9-45e0-b420-a8f23803d5e1/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2874,2887] [2024-11-02 12:31:46,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:31:46,558 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:31:46,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46 WrapperNode [2024-11-02 12:31:46,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:31:46,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:46,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:31:46,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:31:46,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,625 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 276 [2024-11-02 12:31:46,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:31:46,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:31:46,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:31:46,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:31:46,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:31:46,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:31:46,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:31:46,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:31:46,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (1/1) ... [2024-11-02 12:31:46,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:31:46,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:46,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:31:46,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:31:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:31:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-02 12:31:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-02 12:31:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-02 12:31:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-02 12:31:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-02 12:31:46,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-02 12:31:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:31:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:31:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:31:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:31:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:31:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:31:46,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:31:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:31:46,778 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:31:46,908 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:31:46,911 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:31:47,527 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:31:47,527 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:31:47,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:31:47,969 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-02 12:31:47,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:47 BoogieIcfgContainer [2024-11-02 12:31:47,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:31:47,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:31:47,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:31:47,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:31:47,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:31:46" (1/3) ... [2024-11-02 12:31:47,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21966917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:47, skipping insertion in model container [2024-11-02 12:31:47,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:31:46" (2/3) ... [2024-11-02 12:31:47,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21966917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:31:47, skipping insertion in model container [2024-11-02 12:31:47,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:31:47" (3/3) ... [2024-11-02 12:31:47,985 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-11-02 12:31:48,007 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:31:48,008 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:31:48,008 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:31:48,081 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-02 12:31:48,116 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 97 flow [2024-11-02 12:31:48,212 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 565 states, 564 states have (on average 3.3351063829787235) internal successors, (1881), 564 states have internal predecessors, (1881), 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) [2024-11-02 12:31:48,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:31:48,250 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6f76c90d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:31:48,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-02 12:31:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 565 states, 564 states have (on average 3.3351063829787235) internal successors, (1881), 564 states have internal predecessors, (1881), 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) [2024-11-02 12:31:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:31:48,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:48,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:48,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 12:31:48,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 115294254, now seen corresponding path program 1 times [2024-11-02 12:31:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418345526] [2024-11-02 12:31:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:48,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:48,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418345526] [2024-11-02 12:31:48,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418345526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:48,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:48,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:31:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484813848] [2024-11-02 12:31:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:48,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:31:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:31:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:31:48,816 INFO L87 Difference]: Start difference. First operand has 565 states, 564 states have (on average 3.3351063829787235) internal successors, (1881), 564 states have internal predecessors, (1881), 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, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:49,049 INFO L93 Difference]: Finished difference Result 902 states and 2997 transitions. [2024-11-02 12:31:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:31:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-02 12:31:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:49,103 INFO L225 Difference]: With dead ends: 902 [2024-11-02 12:31:49,103 INFO L226 Difference]: Without dead ends: 895 [2024-11-02 12:31:49,111 INFO L431 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 [2024-11-02 12:31:49,119 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:49,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2024-11-02 12:31:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 645. [2024-11-02 12:31:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 3.3229813664596275) internal successors, (2140), 644 states have internal predecessors, (2140), 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) [2024-11-02 12:31:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 2140 transitions. [2024-11-02 12:31:49,309 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 2140 transitions. Word has length 20 [2024-11-02 12:31:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:49,310 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 2140 transitions. [2024-11-02 12:31:49,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:31:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 2140 transitions. [2024-11-02 12:31:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:31:49,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:49,315 INFO L215 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] [2024-11-02 12:31:49,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:31:49,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 12:31:49,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1167734251, now seen corresponding path program 1 times [2024-11-02 12:31:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648060716] [2024-11-02 12:31:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:31:49,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:49,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648060716] [2024-11-02 12:31:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648060716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:49,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:31:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31781732] [2024-11-02 12:31:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:49,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:49,697 INFO L87 Difference]: Start difference. First operand 645 states and 2140 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-02 12:31:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:49,851 INFO L93 Difference]: Finished difference Result 1291 states and 4283 transitions. [2024-11-02 12:31:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:49,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2024-11-02 12:31:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:49,859 INFO L225 Difference]: With dead ends: 1291 [2024-11-02 12:31:49,859 INFO L226 Difference]: Without dead ends: 647 [2024-11-02 12:31:49,862 INFO L431 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 [2024-11-02 12:31:49,864 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:49,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-02 12:31:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2024-11-02 12:31:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 3.3157894736842106) internal successors, (2142), 646 states have internal predecessors, (2142), 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) [2024-11-02 12:31:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 2142 transitions. [2024-11-02 12:31:49,901 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 2142 transitions. Word has length 24 [2024-11-02 12:31:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:49,901 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 2142 transitions. [2024-11-02 12:31:49,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-02 12:31:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 2142 transitions. [2024-11-02 12:31:49,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:31:49,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:49,905 INFO L215 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] [2024-11-02 12:31:49,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:31:49,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 12:31:49,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1824069307, now seen corresponding path program 1 times [2024-11-02 12:31:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:49,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888923848] [2024-11-02 12:31:49,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 12:31:50,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888923848] [2024-11-02 12:31:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888923848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:50,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:31:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634706995] [2024-11-02 12:31:50,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:50,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:31:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:50,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:31:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:31:50,075 INFO L87 Difference]: Start difference. First operand 647 states and 2142 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-02 12:31:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:50,270 INFO L93 Difference]: Finished difference Result 804 states and 2675 transitions. [2024-11-02 12:31:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:31:50,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2024-11-02 12:31:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:50,277 INFO L225 Difference]: With dead ends: 804 [2024-11-02 12:31:50,278 INFO L226 Difference]: Without dead ends: 706 [2024-11-02 12:31:50,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:31:50,280 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:50,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 9 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-02 12:31:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 646. [2024-11-02 12:31:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 3.3410852713178296) internal successors, (2155), 645 states have internal predecessors, (2155), 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) [2024-11-02 12:31:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 2155 transitions. [2024-11-02 12:31:50,361 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 2155 transitions. Word has length 26 [2024-11-02 12:31:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:50,364 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 2155 transitions. [2024-11-02 12:31:50,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-02 12:31:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 2155 transitions. [2024-11-02 12:31:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:31:50,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:50,368 INFO L215 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] [2024-11-02 12:31:50,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:31:50,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 12:31:50,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash -506213525, now seen corresponding path program 1 times [2024-11-02 12:31:50,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:50,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982421811] [2024-11-02 12:31:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:50,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:50,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:50,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982421811] [2024-11-02 12:31:50,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982421811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:50,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432873059] [2024-11-02 12:31:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:50,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:50,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:50,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:31:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:50,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:31:50,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:50,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:31:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432873059] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:50,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:31:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-02 12:31:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491921366] [2024-11-02 12:31:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:50,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:31:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:31:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:31:50,865 INFO L87 Difference]: Start difference. First operand 646 states and 2155 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-02 12:31:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:51,082 INFO L93 Difference]: Finished difference Result 894 states and 2966 transitions. [2024-11-02 12:31:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:31:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2024-11-02 12:31:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:51,089 INFO L225 Difference]: With dead ends: 894 [2024-11-02 12:31:51,090 INFO L226 Difference]: Without dead ends: 744 [2024-11-02 12:31:51,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:31:51,114 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 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 [2024-11-02 12:31:51,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:31:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2024-11-02 12:31:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2024-11-02 12:31:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 3.3499327052489907) internal successors, (2489), 743 states have internal predecessors, (2489), 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) [2024-11-02 12:31:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 2489 transitions. [2024-11-02 12:31:51,203 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 2489 transitions. Word has length 26 [2024-11-02 12:31:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:51,204 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 2489 transitions. [2024-11-02 12:31:51,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-11-02 12:31:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 2489 transitions. [2024-11-02 12:31:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:31:51,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:51,207 INFO L215 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] [2024-11-02 12:31:51,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:31:51,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:51,408 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 12:31:51,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash -472490584, now seen corresponding path program 1 times [2024-11-02 12:31:51,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:51,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810134633] [2024-11-02 12:31:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:53,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:53,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810134633] [2024-11-02 12:31:53,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810134633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:31:53,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117230695] [2024-11-02 12:31:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:31:53,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:31:53,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9503130-f7a9-45e0-b420-a8f23803d5e1/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:31:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:53,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-02 12:31:53,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:31:53,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-02 12:31:53,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:31:53,806 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-02 12:31:53,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-02 12:31:53,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:31:54,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-02 12:31:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:31:54,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:32:05,586 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-02 12:32:05,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 792 treesize of output 602 [2024-11-02 12:32:05,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:32:05,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 582 treesize of output 542