./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 9bd2c7ff 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_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/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_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ --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 0.2.3-dev-9bd2c7f [2023-11-19 05:25:19,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:25:19,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:25:19,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:25:19,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:25:19,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:25:19,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:25:19,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:25:19,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:25:19,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:25:19,717 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:25:19,717 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:25:19,718 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:25:19,720 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:25:19,720 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:25:19,721 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:25:19,721 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:25:19,722 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:25:19,722 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:25:19,723 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:25:19,723 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:25:19,724 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:25:19,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:25:19,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:25:19,726 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:25:19,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:25:19,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:25:19,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:25:19,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:25:19,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:25:19,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:25:19,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:25:19,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:25:19,731 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:25:19,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:25:19,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:25:19,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:25:19,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:25:19,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:25:19,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:25:19,733 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:25:19,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:25:19,733 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:25:19,734 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:25:19,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:25:19,735 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_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2023-11-19 05:25:20,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:25:20,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:25:20,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:25:20,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:25:20,095 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:25:20,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-19 05:25:23,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:25:23,631 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:25:23,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2023-11-19 05:25:23,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/data/983cb1aac/16dea25c4f9a422ea41f28bec9e77bd0/FLAGa240c4c31 [2023-11-19 05:25:23,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/data/983cb1aac/16dea25c4f9a422ea41f28bec9e77bd0 [2023-11-19 05:25:23,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:25:23,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:25:23,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:25:23,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:25:23,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:25:23,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:23" (1/1) ... [2023-11-19 05:25:23,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eabd337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:23, skipping insertion in model container [2023-11-19 05:25:23,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:25:23" (1/1) ... [2023-11-19 05:25:23,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:25:23,964 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_3b53665b-99a7-4bdc-82c4-003dd056229b/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3096,3109] [2023-11-19 05:25:23,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:25:24,012 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:25:24,060 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_3b53665b-99a7-4bdc-82c4-003dd056229b/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3096,3109] [2023-11-19 05:25:24,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:25:24,079 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:25:24,079 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:25:24,088 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:25:24,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24 WrapperNode [2023-11-19 05:25:24,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:25:24,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:25:24,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:25:24,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:25:24,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,167 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-11-19 05:25:24,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:25:24,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:25:24,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:25:24,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:25:24,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:25:24,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:25:24,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:25:24,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:25:24,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (1/1) ... [2023-11-19 05:25:24,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:25:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:24,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:25:24,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:25:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:25:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:25:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:25:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:25:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 05:25:24,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 05:25:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 05:25:24,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 05:25:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 05:25:24,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 05:25:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:25:24,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:25:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:25:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:25:24,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:25:24,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:25:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:25:24,349 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:25:24,504 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:25:24,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:25:24,894 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:25:25,032 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:25:25,044 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:25:25,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:25 BoogieIcfgContainer [2023-11-19 05:25:25,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:25:25,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:25:25,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:25:25,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:25:25,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:25:23" (1/3) ... [2023-11-19 05:25:25,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b52893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:25, skipping insertion in model container [2023-11-19 05:25:25,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:25:24" (2/3) ... [2023-11-19 05:25:25,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b52893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:25:25, skipping insertion in model container [2023-11-19 05:25:25,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:25" (3/3) ... [2023-11-19 05:25:25,066 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-11-19 05:25:25,094 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:25:25,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:25:25,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:25:25,109 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:25:25,210 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 05:25:25,256 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:25:25,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 185 transitions, 391 flow [2023-11-19 05:25:25,293 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 185 transitions, 391 flow [2023-11-19 05:25:25,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 185 transitions, 391 flow [2023-11-19 05:25:25,433 INFO L124 PetriNetUnfolderBase]: 12/182 cut-off events. [2023-11-19 05:25:25,433 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 05:25:25,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 182 events. 12/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2023-11-19 05:25:25,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 1444 [2023-11-19 05:25:33,318 INFO L134 LiptonReduction]: Checked pairs total: 2255 [2023-11-19 05:25:33,319 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-11-19 05:25:33,333 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 28 transitions, 77 flow [2023-11-19 05:25:33,383 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 129 states, 128 states have (on average 2.78125) internal successors, (356), 128 states have internal predecessors, (356), 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) [2023-11-19 05:25:33,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:25:33,420 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;@3e7ad7da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:25:33,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:25:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 128 states have (on average 2.78125) internal successors, (356), 128 states have internal predecessors, (356), 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) [2023-11-19 05:25:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:25:33,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:33,441 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] [2023-11-19 05:25:33,442 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)] === [2023-11-19 05:25:33,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2021650687, now seen corresponding path program 1 times [2023-11-19 05:25:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:33,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702176345] [2023-11-19 05:25:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:33,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:33,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702176345] [2023-11-19 05:25:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702176345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:33,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:33,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:25:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525275041] [2023-11-19 05:25:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:25:34,002 INFO L87 Difference]: Start difference. First operand has 129 states, 128 states have (on average 2.78125) internal successors, (356), 128 states have internal predecessors, (356), 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 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:34,122 INFO L93 Difference]: Finished difference Result 155 states and 432 transitions. [2023-11-19 05:25:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:25:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 05:25:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:34,142 INFO L225 Difference]: With dead ends: 155 [2023-11-19 05:25:34,142 INFO L226 Difference]: Without dead ends: 155 [2023-11-19 05:25:34,144 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 [2023-11-19 05:25:34,150 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:34,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-19 05:25:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-19 05:25:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.8051948051948052) internal successors, (432), 154 states have internal predecessors, (432), 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) [2023-11-19 05:25:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 432 transitions. [2023-11-19 05:25:34,234 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 432 transitions. Word has length 21 [2023-11-19 05:25:34,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:34,234 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 432 transitions. [2023-11-19 05:25:34,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 432 transitions. [2023-11-19 05:25:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:25:34,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:34,238 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] [2023-11-19 05:25:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:25:34,238 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)] === [2023-11-19 05:25:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash 851843559, now seen corresponding path program 1 times [2023-11-19 05:25:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717387685] [2023-11-19 05:25:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:34,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717387685] [2023-11-19 05:25:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717387685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:25:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147286752] [2023-11-19 05:25:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:34,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:34,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:25:34,461 INFO L87 Difference]: Start difference. First operand 155 states and 432 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-19 05:25:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:34,548 INFO L93 Difference]: Finished difference Result 189 states and 532 transitions. [2023-11-19 05:25:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:25:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-19 05:25:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:34,554 INFO L225 Difference]: With dead ends: 189 [2023-11-19 05:25:34,554 INFO L226 Difference]: Without dead ends: 189 [2023-11-19 05:25:34,555 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 [2023-11-19 05:25:34,557 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:34,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-19 05:25:34,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-19 05:25:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8297872340425534) internal successors, (532), 188 states have internal predecessors, (532), 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) [2023-11-19 05:25:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 532 transitions. [2023-11-19 05:25:34,587 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 532 transitions. Word has length 22 [2023-11-19 05:25:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:34,588 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 532 transitions. [2023-11-19 05:25:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-19 05:25:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 532 transitions. [2023-11-19 05:25:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:25:34,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:34,596 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] [2023-11-19 05:25:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:25:34,600 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)] === [2023-11-19 05:25:34,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1008655824, now seen corresponding path program 1 times [2023-11-19 05:25:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:34,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779649313] [2023-11-19 05:25:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:34,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779649313] [2023-11-19 05:25:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779649313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:34,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:25:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609540657] [2023-11-19 05:25:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:25:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:25:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:25:34,794 INFO L87 Difference]: Start difference. First operand 189 states and 532 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2023-11-19 05:25:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:34,884 INFO L93 Difference]: Finished difference Result 190 states and 533 transitions. [2023-11-19 05:25:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:25:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2023-11-19 05:25:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:34,888 INFO L225 Difference]: With dead ends: 190 [2023-11-19 05:25:34,888 INFO L226 Difference]: Without dead ends: 190 [2023-11-19 05:25:34,890 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 [2023-11-19 05:25:34,894 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:34,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-19 05:25:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-19 05:25:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.82010582010582) internal successors, (533), 189 states have internal predecessors, (533), 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) [2023-11-19 05:25:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 533 transitions. [2023-11-19 05:25:34,930 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 533 transitions. Word has length 23 [2023-11-19 05:25:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:34,931 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 533 transitions. [2023-11-19 05:25:34,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2023-11-19 05:25:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 533 transitions. [2023-11-19 05:25:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:34,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:34,935 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] [2023-11-19 05:25:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:25:34,936 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)] === [2023-11-19 05:25:34,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 371513881, now seen corresponding path program 1 times [2023-11-19 05:25:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530247958] [2023-11-19 05:25:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:35,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:35,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530247958] [2023-11-19 05:25:35,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530247958] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188078488] [2023-11-19 05:25:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:35,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:35,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:35,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:25:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:35,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:25:35,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:25:35,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:35,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188078488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:35,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:25:35,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 05:25:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377085390] [2023-11-19 05:25:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:35,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:25:35,668 INFO L87 Difference]: Start difference. First operand 190 states and 533 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:35,806 INFO L93 Difference]: Finished difference Result 229 states and 623 transitions. [2023-11-19 05:25:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:25:35,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:35,809 INFO L225 Difference]: With dead ends: 229 [2023-11-19 05:25:35,809 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 05:25:35,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:25:35,813 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:35,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 05:25:35,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-19 05:25:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.7333333333333334) internal successors, (451), 165 states have internal predecessors, (451), 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) [2023-11-19 05:25:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 451 transitions. [2023-11-19 05:25:35,827 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 451 transitions. Word has length 24 [2023-11-19 05:25:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:35,828 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 451 transitions. [2023-11-19 05:25:35,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 451 transitions. [2023-11-19 05:25:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:35,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:35,831 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] [2023-11-19 05:25:35,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:36,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:36,057 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)] === [2023-11-19 05:25:36,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:36,058 INFO L85 PathProgramCache]: Analyzing trace with hash -456879935, now seen corresponding path program 2 times [2023-11-19 05:25:36,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:36,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751089334] [2023-11-19 05:25:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:36,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:36,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751089334] [2023-11-19 05:25:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751089334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497593126] [2023-11-19 05:25:36,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:25:36,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:36,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:36,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:36,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:25:36,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:25:36,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:25:36,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 05:25:36,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:37,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:37,124 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 [2023-11-19 05:25:37,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:37,290 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 [2023-11-19 05:25:37,325 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 [2023-11-19 05:25:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:37,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:37,812 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_107 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_107))) (or (< (select (select .cse0 c_~A~0.base) c_~A~0.offset) (+ c_~min~0 1)) (forall ((v_ArrVal_108 (Array Int Int))) (< c_~min~0 (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_108) c_~A~0.base) c_~A~0.offset) 1)))))) (forall ((v_ArrVal_107 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_107))) (let ((.cse1 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_108 (Array Int Int))) (< .cse1 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_108) c_~A~0.base) c_~A~0.offset) 1))) (< c_~min~0 .cse1)))))) is different from false [2023-11-19 05:25:37,865 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 315 treesize of output 279 [2023-11-19 05:25:37,883 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 [2023-11-19 05:25:37,894 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 [2023-11-19 05:25:37,901 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 [2023-11-19 05:25:37,909 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 [2023-11-19 05:25:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497593126] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:25:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 9] total 23 [2023-11-19 05:25:44,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354285285] [2023-11-19 05:25:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:25:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:44,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:25:44,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=443, Unknown=13, NotChecked=44, Total=600 [2023-11-19 05:25:44,049 INFO L87 Difference]: Start difference. First operand 166 states and 451 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:44,661 INFO L93 Difference]: Finished difference Result 430 states and 1188 transitions. [2023-11-19 05:25:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:25:44,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:44,665 INFO L225 Difference]: With dead ends: 430 [2023-11-19 05:25:44,665 INFO L226 Difference]: Without dead ends: 301 [2023-11-19 05:25:44,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=144, Invalid=658, Unknown=14, NotChecked=54, Total=870 [2023-11-19 05:25:44,667 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:44,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 241 Invalid, 0 Unknown, 82 Unchecked, 0.4s Time] [2023-11-19 05:25:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-19 05:25:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 171. [2023-11-19 05:25:44,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.6705882352941175) internal successors, (454), 170 states have internal predecessors, (454), 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) [2023-11-19 05:25:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 454 transitions. [2023-11-19 05:25:44,681 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 454 transitions. Word has length 24 [2023-11-19 05:25:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:44,681 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 454 transitions. [2023-11-19 05:25:44,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 454 transitions. [2023-11-19 05:25:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:44,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:44,683 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] [2023-11-19 05:25:44,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:44,907 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)] === [2023-11-19 05:25:44,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash 763324353, now seen corresponding path program 3 times [2023-11-19 05:25:44,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848361716] [2023-11-19 05:25:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:45,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848361716] [2023-11-19 05:25:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848361716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072966704] [2023-11-19 05:25:45,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:25:45,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:45,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:45,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:25:45,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:25:45,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:25:45,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 05:25:45,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:46,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:46,044 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 [2023-11-19 05:25:46,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:46,132 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 [2023-11-19 05:25:46,232 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 [2023-11-19 05:25:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:46,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:46,604 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_142 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_142) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse2))) (or (< c_~min~0 .cse0) (< .cse0 (+ (select .cse1 c_~A~0.offset) 1)))))) (forall ((v_ArrVal_142 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_142) c_~A~0.base))) (or (< (select .cse3 .cse2) (+ c_~min~0 1)) (< c_~min~0 (+ (select .cse3 c_~A~0.offset) 1))))))) is different from false [2023-11-19 05:25:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072966704] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:46,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:25:46,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 9] total 20 [2023-11-19 05:25:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009851807] [2023-11-19 05:25:46,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:46,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:25:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:25:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=323, Unknown=1, NotChecked=36, Total=420 [2023-11-19 05:25:46,634 INFO L87 Difference]: Start difference. First operand 171 states and 454 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:47,216 INFO L93 Difference]: Finished difference Result 386 states and 1091 transitions. [2023-11-19 05:25:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:25:47,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:47,220 INFO L225 Difference]: With dead ends: 386 [2023-11-19 05:25:47,220 INFO L226 Difference]: Without dead ends: 305 [2023-11-19 05:25:47,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=511, Unknown=1, NotChecked=46, Total=650 [2023-11-19 05:25:47,222 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:47,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 253 Invalid, 2 Unknown, 95 Unchecked, 0.4s Time] [2023-11-19 05:25:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-19 05:25:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 187. [2023-11-19 05:25:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.6236559139784945) internal successors, (488), 186 states have internal predecessors, (488), 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) [2023-11-19 05:25:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 488 transitions. [2023-11-19 05:25:47,234 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 488 transitions. Word has length 24 [2023-11-19 05:25:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:47,234 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 488 transitions. [2023-11-19 05:25:47,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 488 transitions. [2023-11-19 05:25:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:47,236 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] [2023-11-19 05:25:47,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:47,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:47,447 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)] === [2023-11-19 05:25:47,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash 376380023, now seen corresponding path program 4 times [2023-11-19 05:25:47,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983852391] [2023-11-19 05:25:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:25:47,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983852391] [2023-11-19 05:25:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983852391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:47,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:25:47,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813781855] [2023-11-19 05:25:47,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:25:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:25:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:25:47,909 INFO L87 Difference]: Start difference. First operand 187 states and 488 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:48,393 INFO L93 Difference]: Finished difference Result 313 states and 830 transitions. [2023-11-19 05:25:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:25:48,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:48,396 INFO L225 Difference]: With dead ends: 313 [2023-11-19 05:25:48,397 INFO L226 Difference]: Without dead ends: 199 [2023-11-19 05:25:48,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:25:48,398 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:48,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:25:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-19 05:25:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 189. [2023-11-19 05:25:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.622340425531915) internal successors, (493), 188 states have internal predecessors, (493), 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) [2023-11-19 05:25:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 493 transitions. [2023-11-19 05:25:48,409 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 493 transitions. Word has length 24 [2023-11-19 05:25:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:48,409 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 493 transitions. [2023-11-19 05:25:48,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 493 transitions. [2023-11-19 05:25:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:48,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:48,411 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] [2023-11-19 05:25:48,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:25:48,412 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)] === [2023-11-19 05:25:48,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1844664335, now seen corresponding path program 5 times [2023-11-19 05:25:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372605439] [2023-11-19 05:25:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:48,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:48,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:48,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372605439] [2023-11-19 05:25:48,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372605439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:48,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699079239] [2023-11-19 05:25:48,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:25:48,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:48,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:48,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:48,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:25:48,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:25:48,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:25:48,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 05:25:48,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:49,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:49,071 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 [2023-11-19 05:25:49,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:49,221 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 23 treesize of output 16 [2023-11-19 05:25:49,283 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 [2023-11-19 05:25:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:49,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:49,754 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_192 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_191))) (let ((.cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_192) c_~A~0.base) c_~A~0.offset))) (or (< .cse0 (+ (select (select .cse1 c_~A~0.base) c_~A~0.offset) 1)) (< c_~min~0 .cse0))))) (forall ((v_ArrVal_191 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_191))) (or (forall ((v_ArrVal_192 (Array Int Int))) (< (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_192) c_~A~0.base) c_~A~0.offset) (+ c_~min~0 1))) (< c_~min~0 (+ (select (select .cse2 c_~A~0.base) c_~A~0.offset) 1)))))) is different from false [2023-11-19 05:25:49,781 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 275 treesize of output 243 [2023-11-19 05:25:49,797 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 139 treesize of output 131 [2023-11-19 05:25:49,807 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 131 treesize of output 127 [2023-11-19 05:25:49,815 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 127 treesize of output 123 [2023-11-19 05:25:49,823 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 123 treesize of output 119 [2023-11-19 05:25:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:49,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699079239] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:49,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:25:49,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 23 [2023-11-19 05:25:49,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562910934] [2023-11-19 05:25:49,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:49,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:25:49,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:25:49,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=4, NotChecked=44, Total=600 [2023-11-19 05:25:49,913 INFO L87 Difference]: Start difference. First operand 189 states and 493 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:50,540 INFO L93 Difference]: Finished difference Result 273 states and 739 transitions. [2023-11-19 05:25:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:25:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:50,543 INFO L225 Difference]: With dead ends: 273 [2023-11-19 05:25:50,543 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 05:25:50,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=4, NotChecked=58, Total=992 [2023-11-19 05:25:50,546 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:50,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 0 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 261 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2023-11-19 05:25:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 05:25:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 186. [2023-11-19 05:25:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.637837837837838) internal successors, (488), 185 states have internal predecessors, (488), 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) [2023-11-19 05:25:50,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 488 transitions. [2023-11-19 05:25:50,557 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 488 transitions. Word has length 24 [2023-11-19 05:25:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:50,557 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 488 transitions. [2023-11-19 05:25:50,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 488 transitions. [2023-11-19 05:25:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:50,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:50,559 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] [2023-11-19 05:25:50,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:50,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:25:50,774 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)] === [2023-11-19 05:25:50,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash 517165119, now seen corresponding path program 6 times [2023-11-19 05:25:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:50,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29981450] [2023-11-19 05:25:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:50,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:51,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:51,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29981450] [2023-11-19 05:25:51,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29981450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:51,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898974741] [2023-11-19 05:25:51,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:25:51,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:51,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:51,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:51,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:25:51,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:25:51,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:25:51,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 05:25:51,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:51,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:51,424 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 [2023-11-19 05:25:51,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:51,459 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 [2023-11-19 05:25:51,536 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 [2023-11-19 05:25:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:51,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:53,866 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_226 (Array Int Int)) (v_ArrVal_225 (Array Int Int))) (< c_~min~0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_225) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_226) c_~A~0.base) c_~A~0.offset) 1))) is different from false [2023-11-19 05:25:53,875 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 134 treesize of output 110 [2023-11-19 05:25:53,884 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 17 treesize of output 15 [2023-11-19 05:25:53,890 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 24 treesize of output 20 [2023-11-19 05:25:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898974741] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:25:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2023-11-19 05:25:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542692807] [2023-11-19 05:25:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:25:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:25:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=344, Unknown=6, NotChecked=38, Total=462 [2023-11-19 05:25:53,934 INFO L87 Difference]: Start difference. First operand 186 states and 488 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:54,462 INFO L93 Difference]: Finished difference Result 325 states and 865 transitions. [2023-11-19 05:25:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:25:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:54,465 INFO L225 Difference]: With dead ends: 325 [2023-11-19 05:25:54,465 INFO L226 Difference]: Without dead ends: 192 [2023-11-19 05:25:54,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=124, Invalid=576, Unknown=6, NotChecked=50, Total=756 [2023-11-19 05:25:54,466 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:54,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 236 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2023-11-19 05:25:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-19 05:25:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 158. [2023-11-19 05:25:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.6815286624203822) internal successors, (421), 157 states have internal predecessors, (421), 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) [2023-11-19 05:25:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 421 transitions. [2023-11-19 05:25:54,479 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 421 transitions. Word has length 24 [2023-11-19 05:25:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:54,480 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 421 transitions. [2023-11-19 05:25:54,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 421 transitions. [2023-11-19 05:25:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:54,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:54,481 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] [2023-11-19 05:25:54,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 05:25:54,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:25:54,705 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)] === [2023-11-19 05:25:54,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash -396476997, now seen corresponding path program 7 times [2023-11-19 05:25:54,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:54,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196443890] [2023-11-19 05:25:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:54,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:25:54,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:54,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196443890] [2023-11-19 05:25:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196443890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:54,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:54,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:25:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516332703] [2023-11-19 05:25:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:54,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:25:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:25:54,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:54,934 INFO L87 Difference]: Start difference. First operand 158 states and 421 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:55,156 INFO L93 Difference]: Finished difference Result 279 states and 731 transitions. [2023-11-19 05:25:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:25:55,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:55,160 INFO L225 Difference]: With dead ends: 279 [2023-11-19 05:25:55,160 INFO L226 Difference]: Without dead ends: 236 [2023-11-19 05:25:55,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:25:55,161 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:55,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:25:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-19 05:25:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 182. [2023-11-19 05:25:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.657458563535912) internal successors, (481), 181 states have internal predecessors, (481), 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) [2023-11-19 05:25:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2023-11-19 05:25:55,174 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 24 [2023-11-19 05:25:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:55,175 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2023-11-19 05:25:55,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2023-11-19 05:25:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:55,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:55,178 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] [2023-11-19 05:25:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:25:55,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 05:25:55,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1355647463, now seen corresponding path program 8 times [2023-11-19 05:25:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631321512] [2023-11-19 05:25:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:55,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:55,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631321512] [2023-11-19 05:25:55,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631321512] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:55,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640422521] [2023-11-19 05:25:55,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:25:55,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:55,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:55,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:55,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:25:55,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:25:55,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:25:55,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:25:55,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:55,839 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 [2023-11-19 05:25:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:55,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640422521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:25:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106866003] [2023-11-19 05:25:56,124 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) [2023-11-19 05:25:56,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:25:56,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 15 [2023-11-19 05:25:56,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023219342] [2023-11-19 05:25:56,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:25:56,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:25:56,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:25:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:25:56,132 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 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) [2023-11-19 05:25:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:56,945 INFO L93 Difference]: Finished difference Result 537 states and 1401 transitions. [2023-11-19 05:25:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 05:25:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:56,948 INFO L225 Difference]: With dead ends: 537 [2023-11-19 05:25:56,948 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 05:25:56,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 05:25:56,950 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:56,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:25:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 05:25:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 150. [2023-11-19 05:25:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.597315436241611) internal successors, (387), 149 states have internal predecessors, (387), 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) [2023-11-19 05:25:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 387 transitions. [2023-11-19 05:25:56,959 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 387 transitions. Word has length 24 [2023-11-19 05:25:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:56,960 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 387 transitions. [2023-11-19 05:25:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 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) [2023-11-19 05:25:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 387 transitions. [2023-11-19 05:25:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:56,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:56,961 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] [2023-11-19 05:25:56,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:57,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:25:57,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 05:25:57,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:57,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1870957461, now seen corresponding path program 9 times [2023-11-19 05:25:57,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:57,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490349487] [2023-11-19 05:25:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:57,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:25:57,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490349487] [2023-11-19 05:25:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490349487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:57,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:25:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905275908] [2023-11-19 05:25:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:25:57,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:57,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:25:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:57,495 INFO L87 Difference]: Start difference. First operand 150 states and 387 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:57,660 INFO L93 Difference]: Finished difference Result 177 states and 447 transitions. [2023-11-19 05:25:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:25:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:57,663 INFO L225 Difference]: With dead ends: 177 [2023-11-19 05:25:57,663 INFO L226 Difference]: Without dead ends: 123 [2023-11-19 05:25:57,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:25:57,664 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:57,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-19 05:25:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-19 05:25:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.5491803278688523) internal successors, (311), 122 states have internal predecessors, (311), 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) [2023-11-19 05:25:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 311 transitions. [2023-11-19 05:25:57,673 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 311 transitions. Word has length 24 [2023-11-19 05:25:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:57,674 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 311 transitions. [2023-11-19 05:25:57,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 311 transitions. [2023-11-19 05:25:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:57,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:57,675 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] [2023-11-19 05:25:57,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:25:57,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 05:25:57,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1478018653, now seen corresponding path program 10 times [2023-11-19 05:25:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:57,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510111980] [2023-11-19 05:25:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:25:58,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:58,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510111980] [2023-11-19 05:25:58,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510111980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:58,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:58,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:25:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165886363] [2023-11-19 05:25:58,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:58,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:25:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:58,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:25:58,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:25:58,038 INFO L87 Difference]: Start difference. First operand 123 states and 311 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:58,439 INFO L93 Difference]: Finished difference Result 186 states and 476 transitions. [2023-11-19 05:25:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:25:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:58,443 INFO L225 Difference]: With dead ends: 186 [2023-11-19 05:25:58,443 INFO L226 Difference]: Without dead ends: 110 [2023-11-19 05:25:58,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:25:58,445 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:58,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:25:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-19 05:25:58,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2023-11-19 05:25:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.4174757281553396) internal successors, (249), 103 states have internal predecessors, (249), 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) [2023-11-19 05:25:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 249 transitions. [2023-11-19 05:25:58,455 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 249 transitions. Word has length 24 [2023-11-19 05:25:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:58,456 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 249 transitions. [2023-11-19 05:25:58,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 249 transitions. [2023-11-19 05:25:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:25:58,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:58,458 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] [2023-11-19 05:25:58,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:25:58,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 05:25:58,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 424480383, now seen corresponding path program 11 times [2023-11-19 05:25:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:25:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593398764] [2023-11-19 05:25:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:25:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:58,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:25:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593398764] [2023-11-19 05:25:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593398764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:58,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681262267] [2023-11-19 05:25:58,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:25:58,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:58,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:58,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:58,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:25:59,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:25:59,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:25:59,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 05:25:59,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:59,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:25:59,161 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 [2023-11-19 05:25:59,245 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 [2023-11-19 05:25:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:59,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:59,503 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_339 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_339) c_~A~0.base) c_~A~0.offset) (+ c_~max~0 1))) is different from false [2023-11-19 05:25:59,508 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 [2023-11-19 05:25:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:25:59,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681262267] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:25:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:25:59,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 20 [2023-11-19 05:25:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271333354] [2023-11-19 05:25:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:59,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:25:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:25:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:25:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2023-11-19 05:25:59,542 INFO L87 Difference]: Start difference. First operand 104 states and 249 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:59,760 INFO L93 Difference]: Finished difference Result 103 states and 248 transitions. [2023-11-19 05:25:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:25:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 05:25:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:59,761 INFO L225 Difference]: With dead ends: 103 [2023-11-19 05:25:59,761 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:25:59,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=537, Unknown=1, NotChecked=48, Total=702 [2023-11-19 05:25:59,762 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:59,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2023-11-19 05:25:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:25:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:25:59,766 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) [2023-11-19 05:25:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:25:59,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2023-11-19 05:25:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:59,767 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:25:59,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:25:59,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:25:59,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 05:25:59,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 05:25:59,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 05:25:59,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 05:25:59,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 05:25:59,988 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1] [2023-11-19 05:25:59,991 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:25:59,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:25:59,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:25:59 BasicIcfg [2023-11-19 05:25:59,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:25:59,996 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:25:59,996 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:25:59,996 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:25:59,997 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:25:25" (3/4) ... [2023-11-19 05:25:59,999 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:26:00,003 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 05:26:00,003 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 05:26:00,004 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 05:26:00,012 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-19 05:26:00,012 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 05:26:00,013 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:26:00,013 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:26:00,142 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:26:00,142 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:26:00,143 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:26:00,144 INFO L158 Benchmark]: Toolchain (without parser) took 36477.03ms. Allocated memory was 165.7MB in the beginning and 312.5MB in the end (delta: 146.8MB). Free memory was 120.9MB in the beginning and 122.5MB in the end (delta: -1.6MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,144 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:26:00,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.81ms. Allocated memory is still 165.7MB. Free memory was 120.4MB in the beginning and 108.3MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.03ms. Allocated memory is still 165.7MB. Free memory was 108.3MB in the beginning and 106.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,148 INFO L158 Benchmark]: Boogie Preprocessor took 64.80ms. Allocated memory is still 165.7MB. Free memory was 106.2MB in the beginning and 104.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,148 INFO L158 Benchmark]: RCFGBuilder took 815.27ms. Allocated memory is still 165.7MB. Free memory was 104.6MB in the beginning and 134.0MB in the end (delta: -29.4MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,149 INFO L158 Benchmark]: TraceAbstraction took 34942.72ms. Allocated memory was 165.7MB in the beginning and 312.5MB in the end (delta: 146.8MB). Free memory was 133.2MB in the beginning and 127.8MB in the end (delta: 5.4MB). Peak memory consumption was 150.9MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,149 INFO L158 Benchmark]: Witness Printer took 147.03ms. Allocated memory is still 312.5MB. Free memory was 127.8MB in the beginning and 122.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:26:00,152 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.81ms. Allocated memory is still 165.7MB. Free memory was 120.4MB in the beginning and 108.3MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.03ms. Allocated memory is still 165.7MB. Free memory was 108.3MB in the beginning and 106.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.80ms. Allocated memory is still 165.7MB. Free memory was 106.2MB in the beginning and 104.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 815.27ms. Allocated memory is still 165.7MB. Free memory was 104.6MB in the beginning and 134.0MB in the end (delta: -29.4MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * TraceAbstraction took 34942.72ms. Allocated memory was 165.7MB in the beginning and 312.5MB in the end (delta: 146.8MB). Free memory was 133.2MB in the beginning and 127.8MB in the end (delta: 5.4MB). Peak memory consumption was 150.9MB. Max. memory is 16.1GB. * Witness Printer took 147.03ms. Allocated memory is still 312.5MB. Free memory was 127.8MB in the beginning and 122.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 183 PlacesBefore, 35 PlacesAfterwards, 185 TransitionsBefore, 28 TransitionsAfterwards, 1444 CoEnabledTransitionPairs, 8 FixpointIterations, 122 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 188 TotalNumberOfCompositions, 2255 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1655, independent: 1574, independent conditional: 0, independent unconditional: 1574, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1010, independent: 986, independent conditional: 0, independent unconditional: 986, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1010, independent: 986, independent conditional: 0, independent unconditional: 986, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1655, independent: 588, independent conditional: 0, independent unconditional: 588, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 1010, unknown conditional: 0, unknown unconditional: 1010] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 208 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 34.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 908 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 908 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 361 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2543 IncrementalHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 0 mSDtfsCounter, 2543 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 233 SyntacticMatches, 16 SemanticMatches, 217 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=3, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 440 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 615 ConstructedInterpolants, 17 QuantifiedInterpolants, 5145 SizeOfPredicates, 87 NumberOfNonLiveVariables, 1568 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 27 InterpolantComputations, 13 PerfectInterpolantSequences, 61/75 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! [2023-11-19 05:26:00,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b53665b-99a7-4bdc-82c4-003dd056229b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE