./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91 --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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:53:26,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:53:26,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:53:26,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:53:26,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:53:26,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:53:26,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:53:26,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:53:26,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:53:26,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:53:26,845 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:53:26,846 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:53:26,846 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:53:26,848 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:53:26,849 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:53:26,849 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:53:26,850 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:53:26,850 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:53:26,851 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:53:26,851 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:53:26,852 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:53:26,852 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:53:26,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:53:26,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:53:26,854 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:53:26,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:53:26,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:53:26,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:53:26,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:53:26,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:53:26,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:53:26,860 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:53:26,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:53:26,860 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:53:26,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:53:26,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:53:26,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:53:26,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:53:26,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:53:26,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:53:26,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:53:26,863 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:53:26,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:53:26,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:53:26,864 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:53:26,864 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:53:26,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:53:26,865 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_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2023-11-24 23:53:27,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:53:27,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:53:27,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:53:27,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:53:27,189 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:53:27,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-24 23:53:30,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:53:30,515 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:53:30,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-24 23:53:30,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/data/61e941dc5/a545b09676d6456a8be97b4478515a3b/FLAGbc56fefa4 [2023-11-24 23:53:30,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/data/61e941dc5/a545b09676d6456a8be97b4478515a3b [2023-11-24 23:53:30,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:53:30,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:53:30,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:53:30,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:53:30,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:53:30,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d20979d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30, skipping insertion in model container [2023-11-24 23:53:30,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:53:30,784 WARN L240 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_8477491d-915c-4ea2-aefd-6ecb374794b4/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3096,3109] [2023-11-24 23:53:30,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:53:30,804 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:53:30,831 WARN L240 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_8477491d-915c-4ea2-aefd-6ecb374794b4/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3096,3109] [2023-11-24 23:53:30,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:53:30,844 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:30,844 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:30,852 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:53:30,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30 WrapperNode [2023-11-24 23:53:30,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:53:30,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:53:30,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:53:30,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:53:30,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,899 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-11-24 23:53:30,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:53:30,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:53:30,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:53:30,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:53:30,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:53:30,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:53:30,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:53:30,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:53:30,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (1/1) ... [2023-11-24 23:53:30,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:53:31,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:31,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:53:31,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:53:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:53:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:53:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:53:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:53:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 23:53:31,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 23:53:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 23:53:31,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 23:53:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 23:53:31,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 23:53:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:53:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 23:53:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 23:53:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:53:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:53:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:53:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:53:31,082 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:53:31,250 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:53:31,252 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:53:31,612 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:53:32,061 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:53:32,062 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:53:32,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:32 BoogieIcfgContainer [2023-11-24 23:53:32,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:53:32,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:53:32,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:53:32,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:53:32,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:53:30" (1/3) ... [2023-11-24 23:53:32,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dac538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:53:32, skipping insertion in model container [2023-11-24 23:53:32,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:30" (2/3) ... [2023-11-24 23:53:32,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dac538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:53:32, skipping insertion in model container [2023-11-24 23:53:32,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:32" (3/3) ... [2023-11-24 23:53:32,073 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-11-24 23:53:32,086 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:53:32,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:53:32,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:53:32,098 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:53:32,176 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 23:53:32,212 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 39 transitions, 99 flow [2023-11-24 23:53:32,338 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 734 states, 733 states have (on average 3.106412005457026) internal successors, (2277), 733 states have internal predecessors, (2277), 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) [2023-11-24 23:53:32,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:53:32,366 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=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;@2fb5dba9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:53:32,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 23:53:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 734 states, 733 states have (on average 3.106412005457026) internal successors, (2277), 733 states have internal predecessors, (2277), 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) [2023-11-24 23:53:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:53:32,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:32,398 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] [2023-11-24 23:53:32,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 23:53:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2131365644, now seen corresponding path program 1 times [2023-11-24 23:53:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:32,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099047706] [2023-11-24 23:53:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:33,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099047706] [2023-11-24 23:53:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099047706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:33,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:53:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830538332] [2023-11-24 23:53:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:33,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:53:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:53:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:53:33,060 INFO L87 Difference]: Start difference. First operand has 734 states, 733 states have (on average 3.106412005457026) internal successors, (2277), 733 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 7.0) 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) [2023-11-24 23:53:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:33,241 INFO L93 Difference]: Finished difference Result 998 states and 3111 transitions. [2023-11-24 23:53:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:53:33,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) 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 [2023-11-24 23:53:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:33,290 INFO L225 Difference]: With dead ends: 998 [2023-11-24 23:53:33,290 INFO L226 Difference]: Without dead ends: 998 [2023-11-24 23:53:33,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:53:33,296 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:33,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 22 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-11-24 23:53:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 822. [2023-11-24 23:53:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 3.1120584652862364) internal successors, (2555), 821 states have internal predecessors, (2555), 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) [2023-11-24 23:53:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2555 transitions. [2023-11-24 23:53:33,412 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2555 transitions. Word has length 28 [2023-11-24 23:53:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:33,413 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 2555 transitions. [2023-11-24 23:53:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) 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) [2023-11-24 23:53:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2555 transitions. [2023-11-24 23:53:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 23:53:33,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:33,419 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] [2023-11-24 23:53:33,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:53:33,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 23:53:33,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1379739367, now seen corresponding path program 1 times [2023-11-24 23:53:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591756429] [2023-11-24 23:53:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:33,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:33,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591756429] [2023-11-24 23:53:33,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591756429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:33,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:33,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:53:33,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274320453] [2023-11-24 23:53:33,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:53:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:53:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:53:33,674 INFO L87 Difference]: Start difference. First operand 822 states and 2555 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-24 23:53:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:33,791 INFO L93 Difference]: Finished difference Result 1098 states and 3431 transitions. [2023-11-24 23:53:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:53:33,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2023-11-24 23:53:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:33,804 INFO L225 Difference]: With dead ends: 1098 [2023-11-24 23:53:33,804 INFO L226 Difference]: Without dead ends: 1098 [2023-11-24 23:53:33,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:53:33,811 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:33,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2023-11-24 23:53:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 914. [2023-11-24 23:53:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 3.11829134720701) internal successors, (2847), 913 states have internal predecessors, (2847), 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) [2023-11-24 23:53:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2847 transitions. [2023-11-24 23:53:33,865 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2847 transitions. Word has length 31 [2023-11-24 23:53:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:33,867 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 2847 transitions. [2023-11-24 23:53:33,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-24 23:53:33,868 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2847 transitions. [2023-11-24 23:53:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:53:33,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:33,872 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] [2023-11-24 23:53:33,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:53:33,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 23:53:33,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1608101906, now seen corresponding path program 1 times [2023-11-24 23:53:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046284621] [2023-11-24 23:53:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:53:34,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046284621] [2023-11-24 23:53:34,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046284621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:34,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:34,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458868106] [2023-11-24 23:53:34,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:34,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:34,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:34,161 INFO L87 Difference]: Start difference. First operand 914 states and 2847 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 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) [2023-11-24 23:53:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:34,236 INFO L93 Difference]: Finished difference Result 915 states and 2848 transitions. [2023-11-24 23:53:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:34,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 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 [2023-11-24 23:53:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:34,247 INFO L225 Difference]: With dead ends: 915 [2023-11-24 23:53:34,248 INFO L226 Difference]: Without dead ends: 915 [2023-11-24 23:53:34,250 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 [2023-11-24 23:53:34,256 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:34,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-11-24 23:53:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2023-11-24 23:53:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 3.1159737417943107) internal successors, (2848), 914 states have internal predecessors, (2848), 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) [2023-11-24 23:53:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 2848 transitions. [2023-11-24 23:53:34,304 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 2848 transitions. Word has length 34 [2023-11-24 23:53:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:34,304 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 2848 transitions. [2023-11-24 23:53:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 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) [2023-11-24 23:53:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 2848 transitions. [2023-11-24 23:53:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:53:34,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:34,311 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] [2023-11-24 23:53:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:53:34,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 23:53:34,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1002372891, now seen corresponding path program 1 times [2023-11-24 23:53:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046154665] [2023-11-24 23:53:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:53:34,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:34,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046154665] [2023-11-24 23:53:34,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046154665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:53:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206742119] [2023-11-24 23:53:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:34,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:53:34,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:53:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:53:34,739 INFO L87 Difference]: Start difference. First operand 915 states and 2848 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-11-24 23:53:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:34,939 INFO L93 Difference]: Finished difference Result 1172 states and 3593 transitions. [2023-11-24 23:53:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:53:34,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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 [2023-11-24 23:53:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:34,948 INFO L225 Difference]: With dead ends: 1172 [2023-11-24 23:53:34,949 INFO L226 Difference]: Without dead ends: 807 [2023-11-24 23:53:34,949 INFO L412 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 [2023-11-24 23:53:34,957 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:34,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 42 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-11-24 23:53:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2023-11-24 23:53:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 3.064516129032258) internal successors, (2470), 806 states have internal predecessors, (2470), 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) [2023-11-24 23:53:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 2470 transitions. [2023-11-24 23:53:34,998 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 2470 transitions. Word has length 35 [2023-11-24 23:53:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:35,000 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 2470 transitions. [2023-11-24 23:53:35,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-11-24 23:53:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 2470 transitions. [2023-11-24 23:53:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:53:35,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:35,006 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] [2023-11-24 23:53:35,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:53:35,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 23:53:35,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:35,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1535967909, now seen corresponding path program 2 times [2023-11-24 23:53:35,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:35,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033524727] [2023-11-24 23:53:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:35,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:53:35,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033524727] [2023-11-24 23:53:35,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033524727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750375581] [2023-11-24 23:53:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:53:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:35,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:35,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:35,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:53:35,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:53:35,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:53:35,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:53:35,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:36,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:53:36,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:53:36,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:53:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:36,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:36,746 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_91 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_91) c_~A~0.base) c_~A~0.offset) (+ c_~max~0 1))) is different from false [2023-11-24 23:53:41,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-24 23:53:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-24 23:53:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750375581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:53:41,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1623515748] [2023-11-24 23:53:41,167 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$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:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) 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) [2023-11-24 23:53:41,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:53:41,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 24 [2023-11-24 23:53:41,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339650676] [2023-11-24 23:53:41,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:53:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-24 23:53:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-24 23:53:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=441, Unknown=8, NotChecked=44, Total=600 [2023-11-24 23:53:41,173 INFO L87 Difference]: Start difference. First operand 807 states and 2470 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 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) [2023-11-24 23:53:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:43,077 INFO L93 Difference]: Finished difference Result 3121 states and 9594 transitions. [2023-11-24 23:53:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-24 23:53:43,078 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 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 [2023-11-24 23:53:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:43,092 INFO L225 Difference]: With dead ends: 3121 [2023-11-24 23:53:43,093 INFO L226 Difference]: Without dead ends: 1598 [2023-11-24 23:53:43,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 53 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=530, Invalid=1358, Unknown=8, NotChecked=84, Total=1980 [2023-11-24 23:53:43,095 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 430 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:43,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 321 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1023 Invalid, 0 Unknown, 300 Unchecked, 1.0s Time] [2023-11-24 23:53:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-11-24 23:53:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 807. [2023-11-24 23:53:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 3.032258064516129) internal successors, (2444), 806 states have internal predecessors, (2444), 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) [2023-11-24 23:53:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 2444 transitions. [2023-11-24 23:53:43,139 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 2444 transitions. Word has length 35 [2023-11-24 23:53:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:43,139 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 2444 transitions. [2023-11-24 23:53:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 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) [2023-11-24 23:53:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 2444 transitions. [2023-11-24 23:53:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:53:43,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:43,143 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] [2023-11-24 23:53:43,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:43,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-24 23:53:43,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1552366955, now seen corresponding path program 3 times [2023-11-24 23:53:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687088496] [2023-11-24 23:53:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:53:43,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687088496] [2023-11-24 23:53:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687088496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285038851] [2023-11-24 23:53:43,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:53:43,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:43,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:53:43,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:53:43,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:53:43,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 23:53:43,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:44,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:53:44,129 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 56 treesize of output 38 [2023-11-24 23:53:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:44,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:44,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285038851] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:44,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:53:44,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 8] total 15 [2023-11-24 23:53:44,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379267190] [2023-11-24 23:53:44,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:44,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:53:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:53:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:53:44,574 INFO L87 Difference]: Start difference. First operand 807 states and 2444 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) [2023-11-24 23:53:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:45,003 INFO L93 Difference]: Finished difference Result 3049 states and 9298 transitions. [2023-11-24 23:53:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:53:45,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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 [2023-11-24 23:53:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:45,020 INFO L225 Difference]: With dead ends: 3049 [2023-11-24 23:53:45,020 INFO L226 Difference]: Without dead ends: 1764 [2023-11-24 23:53:45,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:53:45,021 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 178 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:45,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 83 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:53:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-24 23:53:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 932. [2023-11-24 23:53:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 3.003222341568206) internal successors, (2796), 931 states have internal predecessors, (2796), 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) [2023-11-24 23:53:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2796 transitions. [2023-11-24 23:53:45,069 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2796 transitions. Word has length 35 [2023-11-24 23:53:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:45,069 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 2796 transitions. [2023-11-24 23:53:45,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) [2023-11-24 23:53:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2796 transitions. [2023-11-24 23:53:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:53:45,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:45,073 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] [2023-11-24 23:53:45,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:45,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:45,280 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 1 more)] === [2023-11-24 23:53:45,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1410057615, now seen corresponding path program 4 times [2023-11-24 23:53:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793284907] [2023-11-24 23:53:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:53:45,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:45,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793284907] [2023-11-24 23:53:45,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793284907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184094962] [2023-11-24 23:53:45,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:53:45,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:45,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:45,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:45,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:53:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:45,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:53:45,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:53:45,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184094962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:45,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:53:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-24 23:53:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370245115] [2023-11-24 23:53:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:45,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:53:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:53:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:53:45,836 INFO L87 Difference]: Start difference. First operand 932 states and 2796 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-11-24 23:53:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:45,970 INFO L93 Difference]: Finished difference Result 1105 states and 3295 transitions. [2023-11-24 23:53:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:53:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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 [2023-11-24 23:53:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:45,977 INFO L225 Difference]: With dead ends: 1105 [2023-11-24 23:53:45,977 INFO L226 Difference]: Without dead ends: 750 [2023-11-24 23:53:45,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:53:45,978 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:45,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 37 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-24 23:53:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2023-11-24 23:53:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 2.9546061415220293) internal successors, (2213), 749 states have internal predecessors, (2213), 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) [2023-11-24 23:53:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2213 transitions. [2023-11-24 23:53:46,007 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2213 transitions. Word has length 35 [2023-11-24 23:53:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:46,007 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2213 transitions. [2023-11-24 23:53:46,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-11-24 23:53:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2213 transitions. [2023-11-24 23:53:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:53:46,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:46,010 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] [2023-11-24 23:53:46,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:46,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:46,217 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 1 more)] === [2023-11-24 23:53:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 385114999, now seen corresponding path program 5 times [2023-11-24 23:53:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791708631] [2023-11-24 23:53:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:46,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:46,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791708631] [2023-11-24 23:53:46,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791708631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:46,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93212129] [2023-11-24 23:53:46,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:53:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:46,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:46,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:46,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:53:46,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:53:46,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:53:46,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:53:46,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:47,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:53:47,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:53:47,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:53:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:47,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:56,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-24 23:53:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:53:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93212129] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:56,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:53:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 10] total 25 [2023-11-24 23:53:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583241300] [2023-11-24 23:53:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:56,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:53:56,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:53:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=515, Unknown=15, NotChecked=0, Total=650 [2023-11-24 23:53:56,111 INFO L87 Difference]: Start difference. First operand 750 states and 2213 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 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) [2023-11-24 23:53:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:58,895 INFO L93 Difference]: Finished difference Result 2046 states and 6156 transitions. [2023-11-24 23:53:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:53:58,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 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 [2023-11-24 23:53:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:58,908 INFO L225 Difference]: With dead ends: 2046 [2023-11-24 23:53:58,909 INFO L226 Difference]: Without dead ends: 1385 [2023-11-24 23:53:58,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=176, Invalid=737, Unknown=17, NotChecked=0, Total=930 [2023-11-24 23:53:58,910 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 253 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:58,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 130 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:53:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-11-24 23:53:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 859. [2023-11-24 23:53:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 2.9778554778554778) internal successors, (2555), 858 states have internal predecessors, (2555), 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) [2023-11-24 23:53:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 2555 transitions. [2023-11-24 23:53:58,951 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 2555 transitions. Word has length 35 [2023-11-24 23:53:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:58,952 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 2555 transitions. [2023-11-24 23:53:58,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 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) [2023-11-24 23:53:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 2555 transitions. [2023-11-24 23:53:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:53:58,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:58,956 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] [2023-11-24 23:53:58,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:59,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:59,162 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 1 more)] === [2023-11-24 23:53:59,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1802868699, now seen corresponding path program 6 times [2023-11-24 23:53:59,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662177417] [2023-11-24 23:53:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:53:59,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662177417] [2023-11-24 23:53:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662177417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802007353] [2023-11-24 23:53:59,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:53:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:59,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:59,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:53:59,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:53:59,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:53:59,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:53:59,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:00,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:54:00,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:54:00,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:54:00,226 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 56 treesize of output 38 [2023-11-24 23:54:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:00,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:00,675 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_221 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_221) c_~A~0.base))) (or (< (select .cse0 .cse1) (+ c_~min~0 1)) (< c_~min~0 (+ (select .cse0 c_~A~0.offset) 1))))) (forall ((v_ArrVal_221 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_221) c_~A~0.base))) (let ((.cse2 (select .cse3 .cse1))) (or (< c_~min~0 .cse2) (< .cse2 (+ (select .cse3 c_~A~0.offset) 1)))))))) is different from false [2023-11-24 23:54:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802007353] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 21 [2023-11-24 23:54:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639493473] [2023-11-24 23:54:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:54:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:54:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=314, Unknown=1, NotChecked=36, Total=420 [2023-11-24 23:54:00,681 INFO L87 Difference]: Start difference. First operand 859 states and 2555 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 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) [2023-11-24 23:54:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:01,310 INFO L93 Difference]: Finished difference Result 1864 states and 5612 transitions. [2023-11-24 23:54:01,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:54:01,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 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 [2023-11-24 23:54:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:01,325 INFO L225 Difference]: With dead ends: 1864 [2023-11-24 23:54:01,326 INFO L226 Difference]: Without dead ends: 1539 [2023-11-24 23:54:01,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=462, Unknown=1, NotChecked=44, Total=600 [2023-11-24 23:54:01,327 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:01,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 138 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 134 Unchecked, 0.5s Time] [2023-11-24 23:54:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2023-11-24 23:54:01,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 874. [2023-11-24 23:54:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 2.9679266895761742) internal successors, (2591), 873 states have internal predecessors, (2591), 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) [2023-11-24 23:54:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 2591 transitions. [2023-11-24 23:54:01,385 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 2591 transitions. Word has length 35 [2023-11-24 23:54:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:01,385 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 2591 transitions. [2023-11-24 23:54:01,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 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) [2023-11-24 23:54:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 2591 transitions. [2023-11-24 23:54:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:54:01,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:01,389 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] [2023-11-24 23:54:01,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:01,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:01,596 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 1 more)] === [2023-11-24 23:54:01,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1335186829, now seen corresponding path program 7 times [2023-11-24 23:54:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:01,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059212549] [2023-11-24 23:54:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:01,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:02,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:54:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059212549] [2023-11-24 23:54:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059212549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:54:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771756000] [2023-11-24 23:54:02,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:54:02,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:02,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:02,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:02,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:54:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:02,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-24 23:54:02,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:02,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2023-11-24 23:54:02,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:54:02,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:54:02,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:54:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:02,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:03,180 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_258 (Array Int Int))) (< c_~min~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_258) c_~A~0.base) c_~A~0.offset) 1))) is different from false [2023-11-24 23:54:03,389 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_257 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_257))) (or (forall ((v_ArrVal_258 (Array Int Int))) (< c_~min~0 (+ 1 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_258) c_~A~0.base) c_~A~0.offset)))) (< (select (select .cse0 c_~A~0.base) .cse1) (+ c_~min~0 1))))) (forall ((v_ArrVal_257 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_257))) (let ((.cse2 (select (select .cse3 c_~A~0.base) .cse1))) (or (< c_~min~0 .cse2) (forall ((v_ArrVal_258 (Array Int Int))) (< .cse2 (+ 1 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_258) c_~A~0.base) c_~A~0.offset)))))))))) is different from false [2023-11-24 23:54:03,419 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_257 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_257))) (let ((.cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 .cse0) (forall ((v_ArrVal_258 (Array Int Int))) (< .cse0 (+ 1 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_258) c_~A~0.base) c_~A~0.offset)))))))) (forall ((v_ArrVal_257 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_257))) (or (forall ((v_ArrVal_258 (Array Int Int))) (< c_~min~0 (+ 1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_258) c_~A~0.base) c_~A~0.offset)))) (< (select (select .cse2 c_~A~0.base) c_~A~0.offset) (+ c_~min~0 1)))))) is different from false [2023-11-24 23:54:03,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 337 [2023-11-24 23:54:03,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-11-24 23:54:03,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2023-11-24 23:54:03,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2023-11-24 23:54:03,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-11-24 23:54:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-24 23:54:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771756000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995476841] [2023-11-24 23:54:05,575 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:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) 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) [2023-11-24 23:54:05,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:54:05,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-24 23:54:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503136731] [2023-11-24 23:54:05,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:54:05,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-24 23:54:05,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:54:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-24 23:54:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=588, Unknown=5, NotChecked=156, Total=870 [2023-11-24 23:54:05,579 INFO L87 Difference]: Start difference. First operand 874 states and 2591 transitions. Second operand has 30 states, 30 states have (on average 3.3) internal successors, (99), 29 states have internal predecessors, (99), 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) [2023-11-24 23:54:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:07,406 INFO L93 Difference]: Finished difference Result 1954 states and 5879 transitions. [2023-11-24 23:54:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-24 23:54:07,406 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3) internal successors, (99), 29 states have internal predecessors, (99), 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 [2023-11-24 23:54:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:07,408 INFO L225 Difference]: With dead ends: 1954 [2023-11-24 23:54:07,408 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:54:07,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 21 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=548, Invalid=1529, Unknown=5, NotChecked=270, Total=2352 [2023-11-24 23:54:07,410 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 338 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 666 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:07,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 264 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1001 Invalid, 0 Unknown, 666 Unchecked, 0.9s Time] [2023-11-24 23:54:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:54:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:54:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:54:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:54:07,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-11-24 23:54:07,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:07,413 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:54:07,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3) internal successors, (99), 29 states have internal predecessors, (99), 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) [2023-11-24 23:54:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:54:07,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:54:07,417 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-24 23:54:07,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-24 23:54:07,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-24 23:54:07,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-24 23:54:07,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:07,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:54:07,626 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2023-11-24 23:54:07,628 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 23:54:07,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:54:07,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:54:07 BasicIcfg [2023-11-24 23:54:07,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:54:07,631 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:54:07,631 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:54:07,631 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:54:07,632 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:32" (3/4) ... [2023-11-24 23:54:07,634 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:54:07,636 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-24 23:54:07,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-24 23:54:07,637 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-24 23:54:07,645 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2023-11-24 23:54:07,646 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-24 23:54:07,646 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-24 23:54:07,647 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 23:54:07,765 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:54:07,766 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:54:07,766 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:54:07,767 INFO L158 Benchmark]: Toolchain (without parser) took 37222.65ms. Allocated memory was 144.7MB in the beginning and 268.4MB in the end (delta: 123.7MB). Free memory was 99.5MB in the beginning and 116.1MB in the end (delta: -16.6MB). Peak memory consumption was 109.2MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,767 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 144.7MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:54:07,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.20ms. Allocated memory is still 144.7MB. Free memory was 99.5MB in the beginning and 87.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 85.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,769 INFO L158 Benchmark]: Boogie Preprocessor took 74.19ms. Allocated memory is still 144.7MB. Free memory was 85.3MB in the beginning and 83.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,769 INFO L158 Benchmark]: RCFGBuilder took 1087.15ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 83.2MB in the beginning and 138.8MB in the end (delta: -55.6MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,770 INFO L158 Benchmark]: TraceAbstraction took 35565.57ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 137.8MB in the beginning and 122.2MB in the end (delta: 15.6MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,775 INFO L158 Benchmark]: Witness Printer took 134.69ms. Allocated memory is still 268.4MB. Free memory was 122.2MB in the beginning and 116.1MB in the end (delta: 6.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:54:07,777 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 144.7MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.20ms. Allocated memory is still 144.7MB. Free memory was 99.5MB in the beginning and 87.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 85.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.19ms. Allocated memory is still 144.7MB. Free memory was 85.3MB in the beginning and 83.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1087.15ms. Allocated memory was 144.7MB in the beginning and 184.5MB in the end (delta: 39.8MB). Free memory was 83.2MB in the beginning and 138.8MB in the end (delta: -55.6MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * TraceAbstraction took 35565.57ms. Allocated memory was 184.5MB in the beginning and 268.4MB in the end (delta: 83.9MB). Free memory was 137.8MB in the beginning and 122.2MB in the end (delta: 15.6MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. * Witness Printer took 134.69ms. Allocated memory is still 268.4MB. Free memory was 122.2MB in the beginning and 116.1MB in the end (delta: 6.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 115]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 35.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.1s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1404 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1404 mSDsluCounter, 1079 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1100 IncrementalHoareTripleChecker+Unchecked, 875 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3269 IncrementalHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 204 mSDtfsCounter, 3269 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 316 SyntacticMatches, 52 SemanticMatches, 173 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=932occurred in iteration=6, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 3174 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 548 NumberOfCodeBlocks, 548 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 702 ConstructedInterpolants, 35 QuantifiedInterpolants, 6317 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1362 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 38/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 23:54:07,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8477491d-915c-4ea2-aefd-6ecb374794b4/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE