./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:46,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:46,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:46,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:46,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:46,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:46,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:46,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:46,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:46,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:46,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:46,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:46,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:46,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:46,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:46,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:46,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:46,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:46,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:46,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:46,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:46,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:46,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:46,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:46,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:46,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:46,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:46,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:46,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:46,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:46,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:46,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:46,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:46,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:46,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:46,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:46,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:46,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:46,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:46,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:46,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:46,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/config/svcomp-DataRace-32bit-Taipan_Default.epf [2021-11-07 01:12:46,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:46,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:46,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:46,487 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:46,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:46,487 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:46,488 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:12:46,488 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:46,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:46,489 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:12:46,489 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:12:46,490 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:46,492 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:12:46,494 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:12:46,494 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:12:46,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:46,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:12:46,495 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:12:46,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:12:46,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:12:46,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:46,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:46,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:46,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:46,497 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-07 01:12:46,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:46,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:12:46,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:46,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:46,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:46,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:46,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:46,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:46,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:46,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:46,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:46,503 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:12:46,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:12:46,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:46,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:46,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:46,504 INFO L138 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_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2021-11-07 01:12:46,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:46,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:46,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:46,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:46,827 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:46,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2021-11-07 01:12:46,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/efce3da4b/aa20fe2ac74d4996b1ab4fa02d9c9241/FLAGea049f8e3 [2021-11-07 01:12:47,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:47,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2021-11-07 01:12:47,659 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/efce3da4b/aa20fe2ac74d4996b1ab4fa02d9c9241/FLAGea049f8e3 [2021-11-07 01:12:47,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/efce3da4b/aa20fe2ac74d4996b1ab4fa02d9c9241 [2021-11-07 01:12:47,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:47,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:47,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:47,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:47,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:47,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:47" (1/1) ... [2021-11-07 01:12:47,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62050a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:47, skipping insertion in model container [2021-11-07 01:12:47,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:47" (1/1) ... [2021-11-07 01:12:47,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:47,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:48,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:48,542 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:12:48,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:48,715 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:12:48,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48 WrapperNode [2021-11-07 01:12:48,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:48,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:48,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:12:48,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:12:48,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:48,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:12:48,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:12:48,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:12:48,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:12:48,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:12:48,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:12:48,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:12:48,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (1/1) ... [2021-11-07 01:12:48,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:48,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:12:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:12:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:12:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:12:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:12:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:12:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-07 01:12:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-07 01:12:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-07 01:12:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:12:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:12:48,947 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:12:49,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:12:49,409 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:12:49,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:12:49 BoogieIcfgContainer [2021-11-07 01:12:49,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:12:49,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:12:49,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:12:49,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:12:49,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:12:47" (1/3) ... [2021-11-07 01:12:49,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ea048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:12:49, skipping insertion in model container [2021-11-07 01:12:49,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:48" (2/3) ... [2021-11-07 01:12:49,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792ea048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:12:49, skipping insertion in model container [2021-11-07 01:12:49,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:12:49" (3/3) ... [2021-11-07 01:12:49,423 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2021-11-07 01:12:49,429 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:12:49,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:12:49,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:12:49,430 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:12:49,470 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,470 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,471 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,471 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,472 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,478 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,478 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,479 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,479 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,480 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,480 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,481 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,481 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,481 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,482 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,482 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,482 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,484 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,484 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,484 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,485 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,485 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,485 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,486 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,487 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,487 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,488 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,489 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,489 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,489 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,490 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,490 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,490 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,491 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,491 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,491 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,492 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,492 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,492 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,492 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,493 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,493 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,494 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,494 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,494 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,494 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,497 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,497 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,497 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,498 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,499 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,499 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,499 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,499 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,500 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,500 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,500 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,501 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,501 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,501 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,501 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,502 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,502 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,503 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,503 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,503 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,504 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,504 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,504 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,505 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,505 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,505 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,507 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,507 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,507 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,507 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,508 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,508 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,508 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,509 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,509 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,509 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,510 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,511 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,512 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,515 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,516 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,517 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,517 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,518 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,519 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,519 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,519 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,526 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,527 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,527 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,528 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,528 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,528 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,528 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,529 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,529 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,530 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,530 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,531 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,531 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,531 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,531 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,532 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,532 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,532 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,533 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,534 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,534 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,536 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,537 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,537 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,537 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,537 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,538 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,538 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,538 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,539 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,539 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,540 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,540 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,541 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,541 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,541 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,541 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,542 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,542 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,542 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,543 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,543 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,543 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,543 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,544 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,544 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,545 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,546 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,546 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,546 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,546 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,547 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,547 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,547 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,547 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,548 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,548 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,553 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,554 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,555 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,555 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,556 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,556 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,559 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,560 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:12:49,567 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-07 01:12:49,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:12:49,655 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:12:49,656 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:12:49,673 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:12:49,686 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 97 transitions, 199 flow [2021-11-07 01:12:49,689 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 97 transitions, 199 flow [2021-11-07 01:12:49,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 97 transitions, 199 flow [2021-11-07 01:12:49,749 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-11-07 01:12:49,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 01:12:49,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 96 events. 6/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 127 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2021-11-07 01:12:49,760 INFO L116 LiptonReduction]: Number of co-enabled transitions 2808 [2021-11-07 01:12:52,314 INFO L131 LiptonReduction]: Checked pairs total: 7674 [2021-11-07 01:12:52,315 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-11-07 01:12:52,325 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 87 flow [2021-11-07 01:12:52,378 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 326 states, 318 states have (on average 2.0440251572327046) internal successors, (650), 325 states have internal predecessors, (650), 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) [2021-11-07 01:12:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 318 states have (on average 2.0440251572327046) internal successors, (650), 325 states have internal predecessors, (650), 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) [2021-11-07 01:12:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:12:52,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:52,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:52,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1375961898, now seen corresponding path program 1 times [2021-11-07 01:12:52,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:52,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364558238] [2021-11-07 01:12:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:52,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:52,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:52,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364558238] [2021-11-07 01:12:52,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364558238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:52,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:52,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:12:52,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910672909] [2021-11-07 01:12:52,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:52,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:52,644 INFO L87 Difference]: Start difference. First operand has 326 states, 318 states have (on average 2.0440251572327046) internal successors, (650), 325 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-07 01:12:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:52,694 INFO L93 Difference]: Finished difference Result 327 states and 651 transitions. [2021-11-07 01:12:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:52,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-07 01:12:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:52,712 INFO L225 Difference]: With dead ends: 327 [2021-11-07 01:12:52,713 INFO L226 Difference]: Without dead ends: 327 [2021-11-07 01:12:52,714 INFO L786 BasicCegarLoop]: 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 [2021-11-07 01:12:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-07 01:12:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-11-07 01:12:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 319 states have (on average 2.040752351097179) internal successors, (651), 326 states have internal predecessors, (651), 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) [2021-11-07 01:12:52,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 651 transitions. [2021-11-07 01:12:52,816 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 651 transitions. Word has length 11 [2021-11-07 01:12:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:52,817 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 651 transitions. [2021-11-07 01:12:52,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-07 01:12:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 651 transitions. [2021-11-07 01:12:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:12:52,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:52,819 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:52,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:12:52,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash 23169495, now seen corresponding path program 1 times [2021-11-07 01:12:52,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:52,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93794267] [2021-11-07 01:12:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:52,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:52,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:52,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93794267] [2021-11-07 01:12:52,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93794267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:12:52,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810359204] [2021-11-07 01:12:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:52,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:52,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:52,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:12:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:53,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:53,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:53,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810359204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:53,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1193937192] [2021-11-07 01:12:53,203 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:12:53,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:12:53,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-07 01:12:53,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369784834] [2021-11-07 01:12:53,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:12:53,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:12:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:12:53,226 INFO L87 Difference]: Start difference. First operand 327 states and 651 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-07 01:12:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:53,270 INFO L93 Difference]: Finished difference Result 330 states and 654 transitions. [2021-11-07 01:12:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 12 [2021-11-07 01:12:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:53,275 INFO L225 Difference]: With dead ends: 330 [2021-11-07 01:12:53,275 INFO L226 Difference]: Without dead ends: 330 [2021-11-07 01:12:53,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:12:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-07 01:12:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-11-07 01:12:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 322 states have (on average 2.031055900621118) internal successors, (654), 329 states have internal predecessors, (654), 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) [2021-11-07 01:12:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 654 transitions. [2021-11-07 01:12:53,302 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 654 transitions. Word has length 12 [2021-11-07 01:12:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:53,302 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 654 transitions. [2021-11-07 01:12:53,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-07 01:12:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 654 transitions. [2021-11-07 01:12:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:12:53,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:53,305 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:53,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:53,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:53,531 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -447204074, now seen corresponding path program 2 times [2021-11-07 01:12:53,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:53,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001125860] [2021-11-07 01:12:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:53,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:53,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:53,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001125860] [2021-11-07 01:12:53,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001125860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:12:53,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991732884] [2021-11-07 01:12:53,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:12:53,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:53,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:53,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:53,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:12:53,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:12:53,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:53,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:53,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:12:53,878 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:12:53,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 01:12:53,948 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-07 01:12:53,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-07 01:12:54,041 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-07 01:12:54,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-07 01:12:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:12:54,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:12:54,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991732884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:54,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:12:54,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2021-11-07 01:12:54,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784415436] [2021-11-07 01:12:54,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:12:54,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:12:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:12:54,251 INFO L87 Difference]: Start difference. First operand 330 states and 654 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-07 01:12:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:54,575 INFO L93 Difference]: Finished difference Result 431 states and 856 transitions. [2021-11-07 01:12:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:54,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 15 [2021-11-07 01:12:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:54,583 INFO L225 Difference]: With dead ends: 431 [2021-11-07 01:12:54,583 INFO L226 Difference]: Without dead ends: 431 [2021-11-07 01:12:54,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:12:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-07 01:12:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 397. [2021-11-07 01:12:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 389 states have (on average 2.025706940874036) internal successors, (788), 396 states have internal predecessors, (788), 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) [2021-11-07 01:12:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 788 transitions. [2021-11-07 01:12:54,643 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 788 transitions. Word has length 15 [2021-11-07 01:12:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:54,643 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 788 transitions. [2021-11-07 01:12:54,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-07 01:12:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 788 transitions. [2021-11-07 01:12:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:12:54,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:54,650 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:54,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:54,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:54,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1781944760, now seen corresponding path program 1 times [2021-11-07 01:12:54,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:54,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834728312] [2021-11-07 01:12:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:54,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:54,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:54,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834728312] [2021-11-07 01:12:54,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834728312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:12:54,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853686425] [2021-11-07 01:12:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:54,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:54,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:12:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:55,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:12:55,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:55,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:55,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853686425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:55,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1341935795] [2021-11-07 01:12:55,284 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:12:55,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:12:55,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-07 01:12:55,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169565803] [2021-11-07 01:12:55,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:12:55,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:12:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:12:55,287 INFO L87 Difference]: Start difference. First operand 397 states and 788 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 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) [2021-11-07 01:12:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:55,318 INFO L93 Difference]: Finished difference Result 403 states and 794 transitions. [2021-11-07 01:12:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:12:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 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 15 [2021-11-07 01:12:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:55,323 INFO L225 Difference]: With dead ends: 403 [2021-11-07 01:12:55,323 INFO L226 Difference]: Without dead ends: 403 [2021-11-07 01:12:55,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:12:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-07 01:12:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-11-07 01:12:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 2.010126582278481) internal successors, (794), 402 states have internal predecessors, (794), 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) [2021-11-07 01:12:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 794 transitions. [2021-11-07 01:12:55,342 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 794 transitions. Word has length 15 [2021-11-07 01:12:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:55,343 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 794 transitions. [2021-11-07 01:12:55,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 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) [2021-11-07 01:12:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 794 transitions. [2021-11-07 01:12:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:12:55,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:55,345 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:55,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:55,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:55,570 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1436468904, now seen corresponding path program 2 times [2021-11-07 01:12:55,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:55,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188555707] [2021-11-07 01:12:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:55,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:55,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:55,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188555707] [2021-11-07 01:12:55,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188555707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:55,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:55,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:12:55,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585985582] [2021-11-07 01:12:55,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:12:55,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:12:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:55,821 INFO L87 Difference]: Start difference. First operand 403 states and 794 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-07 01:12:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:56,116 INFO L93 Difference]: Finished difference Result 493 states and 974 transitions. [2021-11-07 01:12:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:56,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 [2021-11-07 01:12:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:56,122 INFO L225 Difference]: With dead ends: 493 [2021-11-07 01:12:56,122 INFO L226 Difference]: Without dead ends: 493 [2021-11-07 01:12:56,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-07 01:12:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 461. [2021-11-07 01:12:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 454 states have (on average 2.004405286343612) internal successors, (910), 460 states have internal predecessors, (910), 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) [2021-11-07 01:12:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 910 transitions. [2021-11-07 01:12:56,155 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 910 transitions. Word has length 21 [2021-11-07 01:12:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:56,155 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 910 transitions. [2021-11-07 01:12:56,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-11-07 01:12:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 910 transitions. [2021-11-07 01:12:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:12:56,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:56,162 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:56,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:12:56,162 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 319263460, now seen corresponding path program 1 times [2021-11-07 01:12:56,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:56,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882764235] [2021-11-07 01:12:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:56,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:56,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:56,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882764235] [2021-11-07 01:12:56,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882764235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:56,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:56,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:12:56,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18813073] [2021-11-07 01:12:56,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:12:56,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:12:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:56,352 INFO L87 Difference]: Start difference. First operand 461 states and 910 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-07 01:12:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:56,641 INFO L93 Difference]: Finished difference Result 547 states and 1082 transitions. [2021-11-07 01:12:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:12:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:56,648 INFO L225 Difference]: With dead ends: 547 [2021-11-07 01:12:56,648 INFO L226 Difference]: Without dead ends: 531 [2021-11-07 01:12:56,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-11-07 01:12:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 512. [2021-11-07 01:12:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 505 states have (on average 2.0) internal successors, (1010), 511 states have internal predecessors, (1010), 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) [2021-11-07 01:12:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1010 transitions. [2021-11-07 01:12:56,671 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1010 transitions. Word has length 27 [2021-11-07 01:12:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:56,672 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1010 transitions. [2021-11-07 01:12:56,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-07 01:12:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1010 transitions. [2021-11-07 01:12:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:12:56,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:56,674 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:56,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:12:56,674 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:56,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash 57194903, now seen corresponding path program 1 times [2021-11-07 01:12:56,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:56,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244631860] [2021-11-07 01:12:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:56,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:56,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:56,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244631860] [2021-11-07 01:12:56,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244631860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:56,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:56,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:12:56,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902449028] [2021-11-07 01:12:56,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:12:56,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:12:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:56,800 INFO L87 Difference]: Start difference. First operand 512 states and 1010 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-07 01:12:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:57,076 INFO L93 Difference]: Finished difference Result 600 states and 1186 transitions. [2021-11-07 01:12:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:57,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:12:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:57,082 INFO L225 Difference]: With dead ends: 600 [2021-11-07 01:12:57,082 INFO L226 Difference]: Without dead ends: 584 [2021-11-07 01:12:57,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-11-07 01:12:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 562. [2021-11-07 01:12:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 555 states have (on average 1.9963963963963964) internal successors, (1108), 561 states have internal predecessors, (1108), 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) [2021-11-07 01:12:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1108 transitions. [2021-11-07 01:12:57,108 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1108 transitions. Word has length 27 [2021-11-07 01:12:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:57,109 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1108 transitions. [2021-11-07 01:12:57,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-07 01:12:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1108 transitions. [2021-11-07 01:12:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:12:57,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:57,111 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:57,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 01:12:57,112 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1917251970, now seen corresponding path program 1 times [2021-11-07 01:12:57,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:57,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798906168] [2021-11-07 01:12:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:57,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:57,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:57,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798906168] [2021-11-07 01:12:57,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798906168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:57,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:57,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:12:57,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030519895] [2021-11-07 01:12:57,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:12:57,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:12:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:57,427 INFO L87 Difference]: Start difference. First operand 562 states and 1108 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-07 01:12:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:57,551 INFO L93 Difference]: Finished difference Result 1406 states and 2781 transitions. [2021-11-07 01:12:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:57,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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 31 [2021-11-07 01:12:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:57,565 INFO L225 Difference]: With dead ends: 1406 [2021-11-07 01:12:57,565 INFO L226 Difference]: Without dead ends: 1406 [2021-11-07 01:12:57,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:12:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-11-07 01:12:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 577. [2021-11-07 01:12:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 570 states have (on average 1.9736842105263157) internal successors, (1125), 576 states have internal predecessors, (1125), 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) [2021-11-07 01:12:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1125 transitions. [2021-11-07 01:12:57,600 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1125 transitions. Word has length 31 [2021-11-07 01:12:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:57,601 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1125 transitions. [2021-11-07 01:12:57,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-07 01:12:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1125 transitions. [2021-11-07 01:12:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:12:57,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:57,603 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:57,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 01:12:57,604 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:57,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1368354918, now seen corresponding path program 2 times [2021-11-07 01:12:57,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:57,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904119619] [2021-11-07 01:12:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:57,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:12:57,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:57,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904119619] [2021-11-07 01:12:57,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904119619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:12:57,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443073348] [2021-11-07 01:12:57,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:12:57,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:57,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:57,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:12:57,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:12:57,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:57,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:12:57,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:57,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:12:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:58,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:58,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 19 [2021-11-07 01:12:58,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 18 [2021-11-07 01:12:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:58,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443073348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:58,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:12:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2021-11-07 01:12:58,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46311649] [2021-11-07 01:12:58,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:12:58,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:12:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:12:58,200 INFO L87 Difference]: Start difference. First operand 577 states and 1125 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:58,320 INFO L93 Difference]: Finished difference Result 1785 states and 3526 transitions. [2021-11-07 01:12:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:12:58,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:12:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:58,337 INFO L225 Difference]: With dead ends: 1785 [2021-11-07 01:12:58,337 INFO L226 Difference]: Without dead ends: 1785 [2021-11-07 01:12:58,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:12:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-11-07 01:12:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 590. [2021-11-07 01:12:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 583 states have (on average 1.9519725557461407) internal successors, (1138), 589 states have internal predecessors, (1138), 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) [2021-11-07 01:12:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1138 transitions. [2021-11-07 01:12:58,376 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1138 transitions. Word has length 31 [2021-11-07 01:12:58,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:58,377 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1138 transitions. [2021-11-07 01:12:58,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1138 transitions. [2021-11-07 01:12:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:12:58,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:58,379 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:12:58,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:58,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:58,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:12:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1469042122, now seen corresponding path program 3 times [2021-11-07 01:12:58,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:58,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62130330] [2021-11-07 01:12:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:58,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:12:58,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:58,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62130330] [2021-11-07 01:12:58,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62130330] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:12:58,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85582416] [2021-11-07 01:12:58,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:12:58,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:58,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:58,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:58,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:12:58,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:12:58,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 01:12:58,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:59,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:12:59,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,131 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:12:59,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2021-11-07 01:12:59,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:12:59,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-07 01:12:59,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-07 01:12:59,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-07 01:12:59,543 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-07 01:12:59,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 52 [2021-11-07 01:12:59,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,661 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-07 01:12:59,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 54 [2021-11-07 01:12:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,770 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 01:12:59,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 66 [2021-11-07 01:12:59,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:12:59,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:12:59,909 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-07 01:12:59,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 64 treesize of output 78 [2021-11-07 01:12:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:12:59,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:00,555 INFO L354 Elim1Store]: treesize reduction 342, result has 12.1 percent of original size [2021-11-07 01:13:00,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 69 [2021-11-07 01:13:00,566 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:13:00,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 57 [2021-11-07 01:13:00,575 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:13:00,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 62 [2021-11-07 01:13:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:00,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85582416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:00,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:13:00,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [6] total 29 [2021-11-07 01:13:00,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878539276] [2021-11-07 01:13:00,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 01:13:00,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 01:13:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:13:00,746 INFO L87 Difference]: Start difference. First operand 590 states and 1138 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 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) [2021-11-07 01:13:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:08,997 INFO L93 Difference]: Finished difference Result 3850 states and 7616 transitions. [2021-11-07 01:13:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 01:13:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:13:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:09,037 INFO L225 Difference]: With dead ends: 3850 [2021-11-07 01:13:09,037 INFO L226 Difference]: Without dead ends: 3846 [2021-11-07 01:13:09,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3823 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2363, Invalid=8349, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 01:13:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-11-07 01:13:09,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 932. [2021-11-07 01:13:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 925 states have (on average 2.0043243243243243) internal successors, (1854), 931 states have internal predecessors, (1854), 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) [2021-11-07 01:13:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1854 transitions. [2021-11-07 01:13:09,127 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1854 transitions. Word has length 31 [2021-11-07 01:13:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:09,128 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1854 transitions. [2021-11-07 01:13:09,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 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) [2021-11-07 01:13:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1854 transitions. [2021-11-07 01:13:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:13:09,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:09,131 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:09,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:09,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 01:13:09,347 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:13:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 918824517, now seen corresponding path program 1 times [2021-11-07 01:13:09,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:09,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347221908] [2021-11-07 01:13:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:09,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:13:09,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:09,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347221908] [2021-11-07 01:13:09,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347221908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:09,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388585020] [2021-11-07 01:13:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:09,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:09,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:09,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:09,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:13:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:09,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:13:09,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:09,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:13:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:09,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:10,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 16 [2021-11-07 01:13:10,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2021-11-07 01:13:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:10,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388585020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:10,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:13:10,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2021-11-07 01:13:10,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515478555] [2021-11-07 01:13:10,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:13:10,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:10,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:13:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:13:10,089 INFO L87 Difference]: Start difference. First operand 932 states and 1854 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:10,250 INFO L93 Difference]: Finished difference Result 2171 states and 4336 transitions. [2021-11-07 01:13:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:13:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:13:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:10,265 INFO L225 Difference]: With dead ends: 2171 [2021-11-07 01:13:10,266 INFO L226 Difference]: Without dead ends: 2171 [2021-11-07 01:13:10,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:13:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2021-11-07 01:13:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 841. [2021-11-07 01:13:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 834 states have (on average 2.0047961630695443) internal successors, (1672), 840 states have internal predecessors, (1672), 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) [2021-11-07 01:13:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1672 transitions. [2021-11-07 01:13:10,338 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1672 transitions. Word has length 31 [2021-11-07 01:13:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:10,340 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1672 transitions. [2021-11-07 01:13:10,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1672 transitions. [2021-11-07 01:13:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:13:10,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:10,343 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:10,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:10,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 01:13:10,571 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:13:10,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1832853196, now seen corresponding path program 4 times [2021-11-07 01:13:10,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:10,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997783169] [2021-11-07 01:13:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:10,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:10,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:10,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997783169] [2021-11-07 01:13:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997783169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:10,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:10,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:13:10,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39569076] [2021-11-07 01:13:10,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:13:10,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:10,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:13:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:13:10,820 INFO L87 Difference]: Start difference. First operand 841 states and 1672 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-07 01:13:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:10,958 INFO L93 Difference]: Finished difference Result 2075 states and 4125 transitions. [2021-11-07 01:13:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:13:10,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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 31 [2021-11-07 01:13:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:10,976 INFO L225 Difference]: With dead ends: 2075 [2021-11-07 01:13:10,976 INFO L226 Difference]: Without dead ends: 2075 [2021-11-07 01:13:10,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:13:10,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2021-11-07 01:13:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 843. [2021-11-07 01:13:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 836 states have (on average 2.0047846889952154) internal successors, (1676), 842 states have internal predecessors, (1676), 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) [2021-11-07 01:13:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1676 transitions. [2021-11-07 01:13:11,021 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1676 transitions. Word has length 31 [2021-11-07 01:13:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:11,022 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1676 transitions. [2021-11-07 01:13:11,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 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) [2021-11-07 01:13:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1676 transitions. [2021-11-07 01:13:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:13:11,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:11,024 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:11,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 01:13:11,025 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:13:11,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1309874314, now seen corresponding path program 5 times [2021-11-07 01:13:11,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:11,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650907303] [2021-11-07 01:13:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:11,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:13:11,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:11,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650907303] [2021-11-07 01:13:11,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650907303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:11,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548792100] [2021-11-07 01:13:11,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:13:11,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:11,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:11,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:11,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:13:11,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:13:11,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:13:11,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:13:11,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:11,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:13:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:11,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:11,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 19 [2021-11-07 01:13:11,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 18 [2021-11-07 01:13:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:11,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548792100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:11,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:13:11,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2021-11-07 01:13:11,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788648168] [2021-11-07 01:13:11,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:13:11,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:13:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:13:11,698 INFO L87 Difference]: Start difference. First operand 843 states and 1676 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:11,786 INFO L93 Difference]: Finished difference Result 2102 states and 4153 transitions. [2021-11-07 01:13:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:13:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:13:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:11,804 INFO L225 Difference]: With dead ends: 2102 [2021-11-07 01:13:11,804 INFO L226 Difference]: Without dead ends: 2102 [2021-11-07 01:13:11,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:13:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-11-07 01:13:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 855. [2021-11-07 01:13:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 848 states have (on average 2.0047169811320753) internal successors, (1700), 854 states have internal predecessors, (1700), 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) [2021-11-07 01:13:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1700 transitions. [2021-11-07 01:13:11,850 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1700 transitions. Word has length 31 [2021-11-07 01:13:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:11,850 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1700 transitions. [2021-11-07 01:13:11,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1700 transitions. [2021-11-07 01:13:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:13:11,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:11,853 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:11,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:12,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:12,066 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:13:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 818804294, now seen corresponding path program 1 times [2021-11-07 01:13:12,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:12,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460563702] [2021-11-07 01:13:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:12,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:12,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:12,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460563702] [2021-11-07 01:13:12,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460563702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:13:12,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182888210] [2021-11-07 01:13:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:12,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:12,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:12,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:13:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:12,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:13:12,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:13,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:13:13,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-07 01:13:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 01:13:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-07 01:13:13,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-07 01:13:13,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:13:13,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-07 01:13:13,931 INFO L354 Elim1Store]: treesize reduction 513, result has 10.8 percent of original size [2021-11-07 01:13:13,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 103 treesize of output 103 [2021-11-07 01:13:30,457 INFO L354 Elim1Store]: treesize reduction 362, result has 14.6 percent of original size [2021-11-07 01:13:30,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 95 [2021-11-07 01:13:34,694 INFO L354 Elim1Store]: treesize reduction 464, result has 13.3 percent of original size [2021-11-07 01:13:34,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 107 [2021-11-07 01:13:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:13:38,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:49,932 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_cache_entry_addref_~entry.offset_328 Int)) (or (< (+ |c_~#cache~0.offset| (* 28 c_ULTIMATE.start_main_~i~2)) v_ULTIMATE.start_cache_entry_addref_~entry.offset_328) (and (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33_146| Int)) (= (select (store (select (let ((.cse0 (store |c_#race| c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base (store (select |c_#race| c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base) (+ c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset 1) 0)))) (store .cse0 |c_~#cache~0.base| (store (store (store (store (select .cse0 |c_~#cache~0.base|) (+ v_ULTIMATE.start_cache_entry_addref_~entry.offset_328 1) 0) (+ 2 v_ULTIMATE.start_cache_entry_addref_~entry.offset_328) 0) (+ 3 v_ULTIMATE.start_cache_entry_addref_~entry.offset_328) 0) v_ULTIMATE.start_cache_entry_addref_~entry.offset_328 |v_ULTIMATE.start_cache_entry_addref_#t~nondet33_146|))) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base) (+ c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset 2) 0) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset) 0)) (forall ((|v_ULTIMATE.start_cache_entry_addref_#t~nondet33_146| Int)) (= (let ((.cse2 (+ c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset 1))) (select (store (select (let ((.cse1 (store |c_#race| c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base (store (select |c_#race| c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base) .cse2 0)))) (store .cse1 |c_~#cache~0.base| (store (store (store (store (select .cse1 |c_~#cache~0.base|) (+ v_ULTIMATE.start_cache_entry_addref_~entry.offset_328 1) 0) (+ 2 v_ULTIMATE.start_cache_entry_addref_~entry.offset_328) 0) (+ 3 v_ULTIMATE.start_cache_entry_addref_~entry.offset_328) 0) v_ULTIMATE.start_cache_entry_addref_~entry.offset_328 |v_ULTIMATE.start_cache_entry_addref_#t~nondet33_146|))) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base) (+ c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset 2) 0) .cse2)) 0))))) is different from false [2021-11-07 01:13:50,313 INFO L354 Elim1Store]: treesize reduction 1176, result has 11.6 percent of original size [2021-11-07 01:13:50,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 12 case distinctions, treesize of input 133 treesize of output 189 [2021-11-07 01:13:50,328 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:13:50,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 189 treesize of output 179 [2021-11-07 01:13:50,343 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:13:50,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 169 [2021-11-07 01:13:50,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-07 01:13:50,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1287774742] [2021-11-07 01:13:50,352 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:1603) 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:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:13:50,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:13:50,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-07 01:13:50,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549858331] [2021-11-07 01:13:50,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:13:50,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:13:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=812, Unknown=12, NotChecked=60, Total=1056 [2021-11-07 01:13:50,355 INFO L87 Difference]: Start difference. First operand 855 states and 1700 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 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) [2021-11-07 01:13:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:13:50,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-07 01:13:50,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 01:13:50,569 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2853ef98 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:13:50,571 INFO L168 Benchmark]: Toolchain (without parser) took 62753.72 ms. Allocated memory was 94.4 MB in the beginning and 218.1 MB in the end (delta: 123.7 MB). Free memory was 57.1 MB in the beginning and 158.6 MB in the end (delta: -101.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:50,571 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:13:50,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 894.03 ms. Allocated memory is still 94.4 MB. Free memory was 56.9 MB in the beginning and 51.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:50,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.42 ms. Allocated memory is still 94.4 MB. Free memory was 51.1 MB in the beginning and 48.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:50,572 INFO L168 Benchmark]: Boogie Preprocessor took 39.48 ms. Allocated memory is still 94.4 MB. Free memory was 48.7 MB in the beginning and 46.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:50,573 INFO L168 Benchmark]: RCFGBuilder took 579.14 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 46.9 MB in the beginning and 95.2 MB in the end (delta: -48.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:50,573 INFO L168 Benchmark]: TraceAbstraction took 61155.55 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 94.1 MB in the beginning and 158.6 MB in the end (delta: -64.5 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:50,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 894.03 ms. Allocated memory is still 94.4 MB. Free memory was 56.9 MB in the beginning and 51.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.42 ms. Allocated memory is still 94.4 MB. Free memory was 51.1 MB in the beginning and 48.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.48 ms. Allocated memory is still 94.4 MB. Free memory was 48.7 MB in the beginning and 46.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 579.14 ms. Allocated memory was 94.4 MB in the beginning and 123.7 MB in the end (delta: 29.4 MB). Free memory was 46.9 MB in the beginning and 95.2 MB in the end (delta: -48.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 61155.55 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 94.1 MB in the beginning and 158.6 MB in the end (delta: -64.5 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 95 PlacesBefore, 42 PlacesAfterwards, 97 TransitionsBefore, 41 TransitionsAfterwards, 2808 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 59 TotalNumberOfCompositions, 7674 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2672, positive: 2393, positive conditional: 0, positive unconditional: 2393, negative: 279, negative conditional: 0, negative unconditional: 279, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1786, positive: 1691, positive conditional: 0, positive unconditional: 1691, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1786, positive: 1644, positive conditional: 0, positive unconditional: 1644, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 142, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 553, positive: 188, positive conditional: 0, positive unconditional: 188, negative: 365, negative conditional: 0, negative unconditional: 365, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2672, positive: 702, positive conditional: 0, positive unconditional: 702, negative: 184, negative conditional: 0, negative unconditional: 184, unknown: 1786, unknown conditional: 0, unknown unconditional: 1786] , Statistics on independence cache: Total cache size (in pairs): 294, Positive cache size: 229, Positive conditional cache size: 0, Positive unconditional cache size: 229, Negative cache size: 65, Negative conditional cache size: 0, Negative unconditional cache size: 65 - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2853ef98 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2853ef98: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-07 01:13:50,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/config/svcomp-DataRace-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:13:53,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:13:53,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:13:53,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:13:53,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:13:53,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:13:53,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:13:53,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:13:53,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:13:53,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:13:53,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:13:53,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:13:53,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:13:53,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:13:53,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:13:53,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:13:53,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:13:53,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:13:53,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:13:53,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:13:53,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:13:53,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:13:53,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:13:53,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:13:53,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:13:53,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:13:53,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:13:53,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:13:53,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:13:53,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:13:53,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:13:53,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:13:53,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:13:53,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:13:53,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:13:53,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:13:53,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:13:53,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:13:53,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:13:53,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:13:53,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:13:53,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/config/svcomp-DataRace-32bit-Taipan_Bitvector.epf [2021-11-07 01:13:53,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:13:53,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:13:53,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:13:53,569 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:13:53,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:13:53,570 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:13:53,570 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:13:53,570 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:13:53,571 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:13:53,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:13:53,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:13:53,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:13:53,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:13:53,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:13:53,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:13:53,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:13:53,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:13:53,576 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-07 01:13:53,576 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:13:53,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:13:53,577 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:13:53,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:13:53,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:13:53,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:13:53,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:13:53,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:13:53,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:13:53,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:13:53,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:53,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:13:53,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:13:53,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:13:53,580 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:13:53,581 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:53,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:13:53,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:13:53,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:13:53,582 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2021-11-07 01:13:54,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:13:54,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:13:54,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:13:54,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:13:54,079 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:13:54,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2021-11-07 01:13:54,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/b6562cbee/11780dfbb4d94d1fae750b529303ef22/FLAGdb197d128 [2021-11-07 01:13:55,008 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:13:55,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2021-11-07 01:13:55,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/b6562cbee/11780dfbb4d94d1fae750b529303ef22/FLAGdb197d128 [2021-11-07 01:13:55,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/data/b6562cbee/11780dfbb4d94d1fae750b529303ef22 [2021-11-07 01:13:55,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:13:55,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:13:55,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:55,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:13:55,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:13:55,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:55,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712864f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55, skipping insertion in model container [2021-11-07 01:13:55,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:55,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:13:55,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:55,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:55,841 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:13:55,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:55,994 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:13:55,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55 WrapperNode [2021-11-07 01:13:55,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:55,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:55,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:13:55,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:13:56,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:56,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:13:56,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:13:56,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:13:56,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:13:56,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:13:56,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:13:56,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:13:56,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (1/1) ... [2021-11-07 01:13:56,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:56,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:56,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:13:56,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:13:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:13:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:13:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:13:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:13:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-07 01:13:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-07 01:13:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-07 01:13:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:13:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:13:56,291 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:13:56,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:13:56,935 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:13:56,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:56 BoogieIcfgContainer [2021-11-07 01:13:56,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:13:56,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:13:56,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:13:56,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:13:56,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:13:55" (1/3) ... [2021-11-07 01:13:56,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a01689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:56, skipping insertion in model container [2021-11-07 01:13:56,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:55" (2/3) ... [2021-11-07 01:13:56,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a01689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:56, skipping insertion in model container [2021-11-07 01:13:56,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:56" (3/3) ... [2021-11-07 01:13:56,949 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2021-11-07 01:13:56,956 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:13:56,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:13:56,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:13:56,957 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:13:57,016 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,016 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,016 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,017 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,017 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,017 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,018 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,018 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,018 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,019 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,019 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,019 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,019 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,020 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,020 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,022 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,022 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,022 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,023 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,023 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,023 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,024 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,025 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,025 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,025 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,025 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,026 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,027 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,027 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,027 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,028 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,029 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,029 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,029 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,030 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,030 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,030 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,031 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,031 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,031 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,032 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,032 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,033 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,033 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,033 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,033 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,035 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,036 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,036 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,036 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,037 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,037 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,037 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,038 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,038 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,039 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,039 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,039 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,039 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,040 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,040 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,040 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,040 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,041 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,041 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,041 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,042 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,042 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,042 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,042 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,043 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,043 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,044 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,044 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,046 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,046 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,047 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,047 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,047 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,048 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,048 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,049 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,049 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,049 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,050 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,050 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,050 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,051 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,052 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,055 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,056 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,056 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,056 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,058 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,059 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,059 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,060 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,060 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,064 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,065 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,065 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,065 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,065 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,065 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,066 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,066 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,066 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,066 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,066 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,067 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,067 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,067 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,067 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,068 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,068 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,068 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,068 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,069 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,069 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,069 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,070 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,070 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,070 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,070 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,071 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,071 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,071 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,071 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,072 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,072 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,072 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,073 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,073 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,073 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,073 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,074 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,074 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,074 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,074 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,075 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,075 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,075 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,075 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,076 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,076 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,076 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,076 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,077 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,077 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,077 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,077 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,078 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,082 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,082 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,082 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,083 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,083 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_cache_entry_addref_~entry.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,083 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,083 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,084 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,084 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,084 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,085 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,085 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,085 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,085 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:13:57,090 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-07 01:13:57,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:13:57,153 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:13:57,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:13:57,170 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:13:57,183 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 98 transitions, 201 flow [2021-11-07 01:13:57,187 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 98 transitions, 201 flow [2021-11-07 01:13:57,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 98 transitions, 201 flow [2021-11-07 01:13:57,266 INFO L129 PetriNetUnfolder]: 6/97 cut-off events. [2021-11-07 01:13:57,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 01:13:57,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 6/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2021-11-07 01:13:57,281 INFO L116 LiptonReduction]: Number of co-enabled transitions 2808 [2021-11-07 01:14:02,150 INFO L131 LiptonReduction]: Checked pairs total: 7591 [2021-11-07 01:14:02,151 INFO L133 LiptonReduction]: Total number of compositions: 60 [2021-11-07 01:14:02,163 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 87 flow [2021-11-07 01:14:02,211 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 326 states, 318 states have (on average 2.0440251572327046) internal successors, (650), 325 states have internal predecessors, (650), 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) [2021-11-07 01:14:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 318 states have (on average 2.0440251572327046) internal successors, (650), 325 states have internal predecessors, (650), 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) [2021-11-07 01:14:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:14:02,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:02,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:02,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1897017721, now seen corresponding path program 1 times [2021-11-07 01:14:02,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:02,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912598430] [2021-11-07 01:14:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:02,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:02,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:02,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:02,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:14:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:02,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:02,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:02,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:02,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:02,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912598430] [2021-11-07 01:14:02,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912598430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:02,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:02,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:14:02,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829115200] [2021-11-07 01:14:02,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:02,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:02,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:02,585 INFO L87 Difference]: Start difference. First operand has 326 states, 318 states have (on average 2.0440251572327046) internal successors, (650), 325 states have internal predecessors, (650), 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 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-07 01:14:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:02,669 INFO L93 Difference]: Finished difference Result 328 states and 652 transitions. [2021-11-07 01:14:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:02,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 11 [2021-11-07 01:14:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:02,705 INFO L225 Difference]: With dead ends: 328 [2021-11-07 01:14:02,705 INFO L226 Difference]: Without dead ends: 328 [2021-11-07 01:14:02,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-07 01:14:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-07 01:14:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 320 states have (on average 2.0375) internal successors, (652), 327 states have internal predecessors, (652), 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) [2021-11-07 01:14:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 652 transitions. [2021-11-07 01:14:02,799 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 652 transitions. Word has length 11 [2021-11-07 01:14:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:02,800 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 652 transitions. [2021-11-07 01:14:02,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-07 01:14:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 652 transitions. [2021-11-07 01:14:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:14:02,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:02,802 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:02,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:03,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1558719833, now seen corresponding path program 1 times [2021-11-07 01:14:03,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:03,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415650411] [2021-11-07 01:14:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:03,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:03,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:03,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:14:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:03,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:03,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:03,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:03,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:03,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415650411] [2021-11-07 01:14:03,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415650411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:03,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098211082] [2021-11-07 01:14:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:03,348 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:03,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:03,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:03,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:14:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:03,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:03,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098211082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:03,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839224209] [2021-11-07 01:14:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:03,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:03,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:03,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:03,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:14:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:03,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:03,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:03,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:03,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839224209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:03,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:03,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2021-11-07 01:14:03,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903351731] [2021-11-07 01:14:03,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:03,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:03,808 INFO L87 Difference]: Start difference. First operand 328 states and 652 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-11-07 01:14:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:03,913 INFO L93 Difference]: Finished difference Result 332 states and 656 transitions. [2021-11-07 01:14:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:14:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 13 [2021-11-07 01:14:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:03,919 INFO L225 Difference]: With dead ends: 332 [2021-11-07 01:14:03,922 INFO L226 Difference]: Without dead ends: 332 [2021-11-07 01:14:03,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-07 01:14:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-11-07 01:14:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 324 states have (on average 2.0246913580246915) internal successors, (656), 331 states have internal predecessors, (656), 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) [2021-11-07 01:14:03,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 656 transitions. [2021-11-07 01:14:03,952 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 656 transitions. Word has length 13 [2021-11-07 01:14:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:03,952 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 656 transitions. [2021-11-07 01:14:03,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-11-07 01:14:03,953 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 656 transitions. [2021-11-07 01:14:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:14:03,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:03,954 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:03,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:04,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:04,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:04,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:04,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2115781351, now seen corresponding path program 2 times [2021-11-07 01:14:04,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:04,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332569171] [2021-11-07 01:14:04,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:04,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:04,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:04,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:14:04,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:14:04,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:04,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:04,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:04,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:04,763 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:04,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-07 01:14:04,835 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-07 01:14:04,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 41 [2021-11-07 01:14:05,002 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-07 01:14:05,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 64 [2021-11-07 01:14:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:14:05,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:14:05,251 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:05,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332569171] [2021-11-07 01:14:05,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332569171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:05,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:05,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:14:05,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503140316] [2021-11-07 01:14:05,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:05,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=26, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:05,253 INFO L87 Difference]: Start difference. First operand 332 states and 656 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-11-07 01:14:05,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:05,728 INFO L93 Difference]: Finished difference Result 433 states and 858 transitions. [2021-11-07 01:14:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:14:05,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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 17 [2021-11-07 01:14:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:05,733 INFO L225 Difference]: With dead ends: 433 [2021-11-07 01:14:05,733 INFO L226 Difference]: Without dead ends: 433 [2021-11-07 01:14:05,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=26, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-07 01:14:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 399. [2021-11-07 01:14:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 391 states have (on average 2.020460358056266) internal successors, (790), 398 states have internal predecessors, (790), 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) [2021-11-07 01:14:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 790 transitions. [2021-11-07 01:14:05,753 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 790 transitions. Word has length 17 [2021-11-07 01:14:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:05,753 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 790 transitions. [2021-11-07 01:14:05,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-11-07 01:14:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 790 transitions. [2021-11-07 01:14:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 01:14:05,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:05,755 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:05,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:14:05,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:05,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:05,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1198425936, now seen corresponding path program 1 times [2021-11-07 01:14:05,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:05,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962830598] [2021-11-07 01:14:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:05,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:05,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:05,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:14:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:06,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:06,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:06,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:06,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:06,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962830598] [2021-11-07 01:14:06,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962830598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:06,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153894974] [2021-11-07 01:14:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:06,492 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:06,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:06,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:06,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:14:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:06,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:06,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:06,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:06,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153894974] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:06,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23836918] [2021-11-07 01:14:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:06,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:06,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:06,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:06,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:14:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:06,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:07,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:07,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23836918] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:07,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:07,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2021-11-07 01:14:07,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825105803] [2021-11-07 01:14:07,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:14:07,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:14:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:14:07,075 INFO L87 Difference]: Start difference. First operand 399 states and 790 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:07,236 INFO L93 Difference]: Finished difference Result 403 states and 794 transitions. [2021-11-07 01:14:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:14:07,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 01:14:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:07,240 INFO L225 Difference]: With dead ends: 403 [2021-11-07 01:14:07,240 INFO L226 Difference]: Without dead ends: 403 [2021-11-07 01:14:07,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:14:07,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-07 01:14:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-11-07 01:14:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 2.010126582278481) internal successors, (794), 402 states have internal predecessors, (794), 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) [2021-11-07 01:14:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 794 transitions. [2021-11-07 01:14:07,254 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 794 transitions. Word has length 17 [2021-11-07 01:14:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:07,254 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 794 transitions. [2021-11-07 01:14:07,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 794 transitions. [2021-11-07 01:14:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:14:07,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:07,256 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:07,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:07,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:07,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:07,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:07,867 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:07,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash -776001424, now seen corresponding path program 2 times [2021-11-07 01:14:07,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:07,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161768711] [2021-11-07 01:14:07,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:07,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:07,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:07,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:14:08,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:14:08,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:08,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:08,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:08,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:08,111 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:08,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-11-07 01:14:08,206 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-07 01:14:08,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 49 [2021-11-07 01:14:08,397 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-07 01:14:08,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 78 [2021-11-07 01:14:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:08,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:08,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:08,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161768711] [2021-11-07 01:14:08,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161768711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:08,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:08,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:14:08,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039655462] [2021-11-07 01:14:08,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:14:08,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:14:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=33, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:14:08,705 INFO L87 Difference]: Start difference. First operand 403 states and 794 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:09,154 INFO L93 Difference]: Finished difference Result 493 states and 974 transitions. [2021-11-07 01:14:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:14:09,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 01:14:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:09,159 INFO L225 Difference]: With dead ends: 493 [2021-11-07 01:14:09,159 INFO L226 Difference]: Without dead ends: 493 [2021-11-07 01:14:09,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=33, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:14:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-07 01:14:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 461. [2021-11-07 01:14:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 454 states have (on average 2.004405286343612) internal successors, (910), 460 states have internal predecessors, (910), 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) [2021-11-07 01:14:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 910 transitions. [2021-11-07 01:14:09,176 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 910 transitions. Word has length 21 [2021-11-07 01:14:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:09,176 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 910 transitions. [2021-11-07 01:14:09,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 910 transitions. [2021-11-07 01:14:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:14:09,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:09,178 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:09,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:09,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:09,391 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:09,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1848943005, now seen corresponding path program 1 times [2021-11-07 01:14:09,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:09,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973456742] [2021-11-07 01:14:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:09,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:09,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:09,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:14:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:09,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:09,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:09,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:09,633 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:09,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-07 01:14:09,690 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-07 01:14:09,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2021-11-07 01:14:09,772 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-07 01:14:09,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 65 [2021-11-07 01:14:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:09,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:09,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:09,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973456742] [2021-11-07 01:14:09,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973456742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:09,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:09,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:14:09,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244404182] [2021-11-07 01:14:09,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:09,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:14:09,979 INFO L87 Difference]: Start difference. First operand 461 states and 910 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-07 01:14:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:10,286 INFO L93 Difference]: Finished difference Result 527 states and 1042 transitions. [2021-11-07 01:14:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:14:10,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:14:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:10,290 INFO L225 Difference]: With dead ends: 527 [2021-11-07 01:14:10,291 INFO L226 Difference]: Without dead ends: 512 [2021-11-07 01:14:10,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:14:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-07 01:14:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-11-07 01:14:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 505 states have (on average 2.0) internal successors, (1010), 511 states have internal predecessors, (1010), 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) [2021-11-07 01:14:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1010 transitions. [2021-11-07 01:14:10,308 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1010 transitions. Word has length 27 [2021-11-07 01:14:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:10,308 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1010 transitions. [2021-11-07 01:14:10,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-07 01:14:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1010 transitions. [2021-11-07 01:14:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:14:10,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:10,310 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:10,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:10,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:10,526 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1639470183, now seen corresponding path program 1 times [2021-11-07 01:14:10,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:10,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603229220] [2021-11-07 01:14:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:10,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:10,528 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:10,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:14:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:10,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:10,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:10,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:10,808 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:10,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-07 01:14:10,867 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-07 01:14:10,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2021-11-07 01:14:10,963 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-07 01:14:10,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 71 [2021-11-07 01:14:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:11,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:11,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:11,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603229220] [2021-11-07 01:14:11,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603229220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:11,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:11,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-07 01:14:11,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355168377] [2021-11-07 01:14:11,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:14:11,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:14:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=20, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:11,198 INFO L87 Difference]: Start difference. First operand 512 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:11,483 INFO L93 Difference]: Finished difference Result 600 states and 1186 transitions. [2021-11-07 01:14:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:14:11,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 01:14:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:11,488 INFO L225 Difference]: With dead ends: 600 [2021-11-07 01:14:11,489 INFO L226 Difference]: Without dead ends: 584 [2021-11-07 01:14:11,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=20, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-11-07 01:14:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 562. [2021-11-07 01:14:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 555 states have (on average 1.9963963963963964) internal successors, (1108), 561 states have internal predecessors, (1108), 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) [2021-11-07 01:14:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1108 transitions. [2021-11-07 01:14:11,507 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1108 transitions. Word has length 27 [2021-11-07 01:14:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:11,507 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 1108 transitions. [2021-11-07 01:14:11,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1108 transitions. [2021-11-07 01:14:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:14:11,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:11,509 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:11,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:11,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:11,729 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:11,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash 181088285, now seen corresponding path program 1 times [2021-11-07 01:14:11,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:11,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672859825] [2021-11-07 01:14:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:11,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:11,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:11,731 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:11,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:14:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:11,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:14:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:12,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:12,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:12,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-11-07 01:14:12,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 19 [2021-11-07 01:14:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:12,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:12,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672859825] [2021-11-07 01:14:12,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672859825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:12,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:12,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:14:12,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317570625] [2021-11-07 01:14:12,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:12,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:12,408 INFO L87 Difference]: Start difference. First operand 562 states and 1108 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:14,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:14,636 INFO L93 Difference]: Finished difference Result 2138 states and 4245 transitions. [2021-11-07 01:14:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:14:14,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:14,653 INFO L225 Difference]: With dead ends: 2138 [2021-11-07 01:14:14,654 INFO L226 Difference]: Without dead ends: 2138 [2021-11-07 01:14:14,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:14:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-11-07 01:14:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 577. [2021-11-07 01:14:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 570 states have (on average 1.9736842105263157) internal successors, (1125), 576 states have internal predecessors, (1125), 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) [2021-11-07 01:14:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1125 transitions. [2021-11-07 01:14:14,687 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1125 transitions. Word has length 31 [2021-11-07 01:14:14,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:14,688 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1125 transitions. [2021-11-07 01:14:14,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:14,688 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1125 transitions. [2021-11-07 01:14:14,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:14:14,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:14,690 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:14,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:14,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:14,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -404326667, now seen corresponding path program 1 times [2021-11-07 01:14:14,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:14,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978804032] [2021-11-07 01:14:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:14,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:14,906 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:14,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:14:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:15,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:14:15,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:15,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:15,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:15,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-11-07 01:14:15,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 19 [2021-11-07 01:14:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:15,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:15,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978804032] [2021-11-07 01:14:15,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978804032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:15,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:15,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:14:15,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108448831] [2021-11-07 01:14:15,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:15,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:15,523 INFO L87 Difference]: Start difference. First operand 577 states and 1125 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:15,772 INFO L93 Difference]: Finished difference Result 1785 states and 3526 transitions. [2021-11-07 01:14:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:14:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:15,788 INFO L225 Difference]: With dead ends: 1785 [2021-11-07 01:14:15,788 INFO L226 Difference]: Without dead ends: 1785 [2021-11-07 01:14:15,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-11-07 01:14:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 590. [2021-11-07 01:14:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 583 states have (on average 1.9519725557461407) internal successors, (1138), 589 states have internal predecessors, (1138), 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) [2021-11-07 01:14:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1138 transitions. [2021-11-07 01:14:15,822 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1138 transitions. Word has length 31 [2021-11-07 01:14:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:15,822 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1138 transitions. [2021-11-07 01:14:15,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1138 transitions. [2021-11-07 01:14:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:14:15,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:15,824 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:15,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:16,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,038 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:16,039 INFO L85 PathProgramCache]: Analyzing trace with hash -142877017, now seen corresponding path program 2 times [2021-11-07 01:14:16,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:16,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690464509] [2021-11-07 01:14:16,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:16,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:16,040 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:16,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:14:16,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:14:16,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:16,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:14:16,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:16,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:16,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:16,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 [2021-11-07 01:14:16,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 29 [2021-11-07 01:14:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:16,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:16,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690464509] [2021-11-07 01:14:16,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690464509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:16,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:16,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:14:16,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301611463] [2021-11-07 01:14:16,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:14:16,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:14:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:16,585 INFO L87 Difference]: Start difference. First operand 590 states and 1138 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:16,850 INFO L93 Difference]: Finished difference Result 1798 states and 3539 transitions. [2021-11-07 01:14:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:14:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:16,863 INFO L225 Difference]: With dead ends: 1798 [2021-11-07 01:14:16,863 INFO L226 Difference]: Without dead ends: 1798 [2021-11-07 01:14:16,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:14:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-11-07 01:14:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 603. [2021-11-07 01:14:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 596 states have (on average 1.9530201342281879) internal successors, (1164), 602 states have internal predecessors, (1164), 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) [2021-11-07 01:14:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1164 transitions. [2021-11-07 01:14:16,911 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1164 transitions. Word has length 31 [2021-11-07 01:14:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:16,911 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 1164 transitions. [2021-11-07 01:14:16,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1164 transitions. [2021-11-07 01:14:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:14:16,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:16,914 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:16,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:17,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:17,127 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 908283119, now seen corresponding path program 2 times [2021-11-07 01:14:17,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:17,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516655439] [2021-11-07 01:14:17,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:17,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:17,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:17,130 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:14:17,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:14:17,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:17,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:14:17,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:17,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:17,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:17,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-11-07 01:14:17,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 19 [2021-11-07 01:14:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:17,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:17,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516655439] [2021-11-07 01:14:17,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516655439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:17,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:17,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:14:17,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876070675] [2021-11-07 01:14:17,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:17,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:17,804 INFO L87 Difference]: Start difference. First operand 603 states and 1164 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:20,052 INFO L93 Difference]: Finished difference Result 1826 states and 3595 transitions. [2021-11-07 01:14:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:14:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:20,066 INFO L225 Difference]: With dead ends: 1826 [2021-11-07 01:14:20,066 INFO L226 Difference]: Without dead ends: 1826 [2021-11-07 01:14:20,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2021-11-07 01:14:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 605. [2021-11-07 01:14:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 598 states have (on average 1.9531772575250836) internal successors, (1168), 604 states have internal predecessors, (1168), 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) [2021-11-07 01:14:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1168 transitions. [2021-11-07 01:14:20,101 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1168 transitions. Word has length 31 [2021-11-07 01:14:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:20,101 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 1168 transitions. [2021-11-07 01:14:20,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1168 transitions. [2021-11-07 01:14:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:14:20,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:20,103 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:20,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:20,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:20,318 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash 322868167, now seen corresponding path program 3 times [2021-11-07 01:14:20,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:20,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546187795] [2021-11-07 01:14:20,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:14:20,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:20,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:20,338 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:20,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:14:20,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:14:20,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:14:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:20,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:20,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:20,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-11-07 01:14:20,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 19 [2021-11-07 01:14:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:20,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:20,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546187795] [2021-11-07 01:14:20,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546187795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:20,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:20,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:14:20,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282349083] [2021-11-07 01:14:20,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:20,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:20,985 INFO L87 Difference]: Start difference. First operand 605 states and 1168 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:23,209 INFO L93 Difference]: Finished difference Result 2192 states and 4314 transitions. [2021-11-07 01:14:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:14:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:23,226 INFO L225 Difference]: With dead ends: 2192 [2021-11-07 01:14:23,226 INFO L226 Difference]: Without dead ends: 2192 [2021-11-07 01:14:23,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:14:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-11-07 01:14:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 604. [2021-11-07 01:14:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 597 states have (on average 1.9530988274706869) internal successors, (1166), 603 states have internal predecessors, (1166), 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) [2021-11-07 01:14:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1166 transitions. [2021-11-07 01:14:23,263 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1166 transitions. Word has length 31 [2021-11-07 01:14:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:23,264 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1166 transitions. [2021-11-07 01:14:23,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1166 transitions. [2021-11-07 01:14:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:14:23,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:23,265 INFO L513 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:23,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:23,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:23,479 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash -64270747, now seen corresponding path program 3 times [2021-11-07 01:14:23,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:23,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483135534] [2021-11-07 01:14:23,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:14:23,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:23,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:23,480 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:23,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:14:23,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:14:23,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:23,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:14:23,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:23,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:23,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:24,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 19 [2021-11-07 01:14:24,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 30 [2021-11-07 01:14:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:24,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:24,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483135534] [2021-11-07 01:14:24,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483135534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:24,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:24,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:14:24,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042388256] [2021-11-07 01:14:24,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:14:24,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:14:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:24,180 INFO L87 Difference]: Start difference. First operand 604 states and 1166 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:24,437 INFO L93 Difference]: Finished difference Result 1812 states and 3567 transitions. [2021-11-07 01:14:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:14:24,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:24,448 INFO L225 Difference]: With dead ends: 1812 [2021-11-07 01:14:24,449 INFO L226 Difference]: Without dead ends: 1812 [2021-11-07 01:14:24,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:14:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-11-07 01:14:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 617. [2021-11-07 01:14:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 610 states have (on average 1.9540983606557376) internal successors, (1192), 616 states have internal predecessors, (1192), 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) [2021-11-07 01:14:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1192 transitions. [2021-11-07 01:14:24,477 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1192 transitions. Word has length 31 [2021-11-07 01:14:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:24,477 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 1192 transitions. [2021-11-07 01:14:24,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1192 transitions. [2021-11-07 01:14:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:14:24,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:24,479 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:24,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:24,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:24,693 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash -241878434, now seen corresponding path program 1 times [2021-11-07 01:14:24,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:24,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526437970] [2021-11-07 01:14:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:24,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:24,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:24,695 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:24,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:14:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:25,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:14:25,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:25,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:14:25,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2021-11-07 01:14:25,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 65 [2021-11-07 01:14:25,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:25,897 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:25,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 98 [2021-11-07 01:14:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:25,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:26,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:26,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:26,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:27,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:27,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:27,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:27,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:27,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:27,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:28,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:28,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526437970] [2021-11-07 01:14:28,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526437970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:28,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343132278] [2021-11-07 01:14:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:28,445 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:28,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:28,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:14:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:29,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:14:29,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:29,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2021-11-07 01:14:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-07 01:14:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2021-11-07 01:14:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:29,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:29,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 90 [2021-11-07 01:14:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:30,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:30,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:30,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:31,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [343132278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:31,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331343614] [2021-11-07 01:14:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:31,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:31,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:31,761 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:31,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:14:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:32,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:14:32,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:32,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:32,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2021-11-07 01:14:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 01:14:32,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 63 [2021-11-07 01:14:32,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:32,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:32,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 88 [2021-11-07 01:14:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:32,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:33,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:33,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:14:34,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331343614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:34,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:34,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 22 [2021-11-07 01:14:34,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257802162] [2021-11-07 01:14:34,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:14:34,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:14:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:14:34,601 INFO L87 Difference]: Start difference. First operand 617 states and 1192 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:14:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:53,077 INFO L93 Difference]: Finished difference Result 3574 states and 7065 transitions. [2021-11-07 01:14:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 01:14:53,078 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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 45 [2021-11-07 01:14:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:53,095 INFO L225 Difference]: With dead ends: 3574 [2021-11-07 01:14:53,096 INFO L226 Difference]: Without dead ends: 3573 [2021-11-07 01:14:53,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 230 SyntacticMatches, 14 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1028, Invalid=3664, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 01:14:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2021-11-07 01:14:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 2090. [2021-11-07 01:14:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2083 states have (on average 2.110417666826692) internal successors, (4396), 2089 states have internal predecessors, (4396), 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) [2021-11-07 01:14:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 4396 transitions. [2021-11-07 01:14:53,187 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 4396 transitions. Word has length 45 [2021-11-07 01:14:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:53,187 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 4396 transitions. [2021-11-07 01:14:53,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:14:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 4396 transitions. [2021-11-07 01:14:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:14:53,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:53,190 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:53,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:53,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:53,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:53,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:53,805 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:14:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -180566324, now seen corresponding path program 2 times [2021-11-07 01:14:53,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:53,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464390720] [2021-11-07 01:14:53,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:53,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:53,808 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:53,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:14:54,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:14:54,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:54,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:14:54,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:54,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:14:54,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:14:54,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:54,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2021-11-07 01:14:54,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:54,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:54,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:54,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2021-11-07 01:14:55,247 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-07 01:14:55,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2021-11-07 01:15:14,423 WARN L207 SmtUtils]: Spent 18.93 s on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2021-11-07 01:15:14,424 INFO L354 Elim1Store]: treesize reduction 108, result has 32.5 percent of original size [2021-11-07 01:15:14,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 109 [2021-11-07 01:15:30,998 WARN L207 SmtUtils]: Spent 16.26 s on a formula simplification. DAG size of input: 75 DAG size of output: 32 [2021-11-07 01:15:30,999 INFO L354 Elim1Store]: treesize reduction 167, result has 28.6 percent of original size [2021-11-07 01:15:31,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 124 treesize of output 159 [2021-11-07 01:15:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:15:31,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:33,897 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~i~2 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select (select |c_#pthreadsMutex| |c_~#cache~0.base|) (bvadd (_ bv4 32) |c_~#cache~0.offset| (bvmul ULTIMATE.start_main_~i~2 (_ bv28 32))))))) (let ((.cse2 (bvneg (bvneg |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33|)))) (let ((.cse1 (bvneg (bvneg .cse2))) (.cse0 (store (select (store |c_#race| |c_~#cache~0.base| (store (select |c_#race| |c_~#cache~0.base|) (bvadd (bvmul (_ bv28 32) ULTIMATE.start_main_~i~2) |c_~#cache~0.offset|) (_ bv0 1))) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.base) (bvadd (_ bv3 32) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset) |c_t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33|))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select .cse0 (bvadd (_ bv2 32) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset))))) .cse1)) (= (_ bv0 1) (bvadd .cse1 (bvneg (bvneg (bvneg (select .cse0 (bvadd (_ bv1 32) c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset))))))) (= (_ bv0 1) (bvadd .cse2 (bvneg (bvneg (bvneg (select .cse0 c_t_funThread1of1ForFork0_cache_entry_addref_~entry.offset))))))))))) is different from false [2021-11-07 01:16:04,525 WARN L207 SmtUtils]: Spent 12.43 s on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2021-11-07 01:16:04,525 INFO L354 Elim1Store]: treesize reduction 148, result has 44.2 percent of original size [2021-11-07 01:16:04,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 241 treesize of output 213 [2021-11-07 01:16:04,548 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:16:04,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 201 [2021-11-07 01:16:04,616 INFO L354 Elim1Store]: treesize reduction 40, result has 45.2 percent of original size [2021-11-07 01:16:04,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 282 treesize of output 284 [2021-11-07 01:16:24,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 31 [2021-11-07 01:16:24,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 29 [2021-11-07 01:16:24,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 40 [2021-11-07 01:16:24,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 38 [2021-11-07 01:16:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:16:24,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:24,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464390720] [2021-11-07 01:16:24,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464390720] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:16:24,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:16:24,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2021-11-07 01:16:24,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689523442] [2021-11-07 01:16:24,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:16:24,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:16:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=180, Unknown=14, NotChecked=28, Total=272 [2021-11-07 01:16:24,571 INFO L87 Difference]: Start difference. First operand 2090 states and 4396 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-07 01:16:36,505 WARN L207 SmtUtils]: Spent 10.08 s on a formula simplification that was a NOOP. DAG size: 81 [2021-11-07 01:16:50,511 WARN L207 SmtUtils]: Spent 12.09 s on a formula simplification that was a NOOP. DAG size: 77 [2021-11-07 01:17:22,896 WARN L207 SmtUtils]: Spent 22.19 s on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-11-07 01:17:36,989 WARN L207 SmtUtils]: Spent 11.87 s on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2021-11-07 01:17:55,297 WARN L207 SmtUtils]: Spent 12.74 s on a formula simplification that was a NOOP. DAG size: 100 [2021-11-07 01:18:16,122 WARN L207 SmtUtils]: Spent 9.82 s on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2021-11-07 01:18:30,727 WARN L207 SmtUtils]: Spent 10.50 s on a formula simplification. DAG size of input: 114 DAG size of output: 85 [2021-11-07 01:19:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:32,639 INFO L93 Difference]: Finished difference Result 3000 states and 6283 transitions. [2021-11-07 01:19:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:19:32,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 45 [2021-11-07 01:19:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:32,661 INFO L225 Difference]: With dead ends: 3000 [2021-11-07 01:19:32,662 INFO L226 Difference]: Without dead ends: 3000 [2021-11-07 01:19:32,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 145.5s TimeCoverageRelationStatistics Valid=123, Invalid=459, Unknown=22, NotChecked=46, Total=650 [2021-11-07 01:19:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-11-07 01:19:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2127. [2021-11-07 01:19:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2120 states have (on average 2.108490566037736) internal successors, (4470), 2126 states have internal predecessors, (4470), 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) [2021-11-07 01:19:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 4470 transitions. [2021-11-07 01:19:32,757 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 4470 transitions. Word has length 45 [2021-11-07 01:19:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:32,758 INFO L470 AbstractCegarLoop]: Abstraction has 2127 states and 4470 transitions. [2021-11-07 01:19:32,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-07 01:19:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 4470 transitions. [2021-11-07 01:19:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:19:32,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:32,761 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:32,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:32,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:32,980 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:19:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash -180470534, now seen corresponding path program 3 times [2021-11-07 01:19:32,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:32,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653184702] [2021-11-07 01:19:32,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:19:32,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:32,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:32,982 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:32,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:19:33,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 01:19:33,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:19:33,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:19:33,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:33,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:19:34,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:19:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:34,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:19:34,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:34,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:34,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:34,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-07 01:19:34,812 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-07 01:19:34,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2021-11-07 01:19:35,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:35,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:35,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:35,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:35,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:35,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:35,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 53 [2021-11-07 01:19:35,467 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-07 01:19:35,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 98 [2021-11-07 01:19:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:19:35,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:37,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:37,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:19:39,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 62 treesize of output 60 [2021-11-07 01:19:39,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 58 [2021-11-07 01:19:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:19:39,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:39,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653184702] [2021-11-07 01:19:39,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653184702] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:19:39,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:19:39,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2021-11-07 01:19:39,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194465315] [2021-11-07 01:19:39,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:19:39,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:39,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:19:39,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:19:39,232 INFO L87 Difference]: Start difference. First operand 2127 states and 4470 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-07 01:19:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:51,285 INFO L93 Difference]: Finished difference Result 2528 states and 5272 transitions. [2021-11-07 01:19:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:19:51,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 45 [2021-11-07 01:19:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:51,296 INFO L225 Difference]: With dead ends: 2528 [2021-11-07 01:19:51,297 INFO L226 Difference]: Without dead ends: 2528 [2021-11-07 01:19:51,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:19:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-11-07 01:19:51,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2149. [2021-11-07 01:19:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2142 states have (on average 2.107376283846872) internal successors, (4514), 2148 states have internal predecessors, (4514), 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) [2021-11-07 01:19:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 4514 transitions. [2021-11-07 01:19:51,414 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 4514 transitions. Word has length 45 [2021-11-07 01:19:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:51,415 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 4514 transitions. [2021-11-07 01:19:51,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-07 01:19:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 4514 transitions. [2021-11-07 01:19:51,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:19:51,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:51,418 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:51,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:51,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:51,619 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:19:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1748737276, now seen corresponding path program 4 times [2021-11-07 01:19:51,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:51,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008232630] [2021-11-07 01:19:51,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:19:51,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:51,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:51,621 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:51,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:19:52,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:19:52,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:19:52,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:19:52,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:53,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:19:53,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2021-11-07 01:19:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,417 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:53,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2021-11-07 01:19:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,509 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:53,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:19:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:19:53,609 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:53,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 72 [2021-11-07 01:19:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:19:53,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:04,511 WARN L207 SmtUtils]: Spent 10.17 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-11-07 01:20:04,512 INFO L354 Elim1Store]: treesize reduction 87, result has 36.0 percent of original size [2021-11-07 01:20:04,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 83 [2021-11-07 01:20:04,529 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:20:04,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 79 [2021-11-07 01:20:04,542 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 01:20:04,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 156 [2021-11-07 01:20:04,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:04,695 INFO L354 Elim1Store]: treesize reduction 69, result has 33.0 percent of original size [2021-11-07 01:20:04,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 66 [2021-11-07 01:20:04,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 74 treesize of output 64 [2021-11-07 01:20:04,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:04,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:04,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:04,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-07 01:20:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:20:05,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:05,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008232630] [2021-11-07 01:20:05,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008232630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:20:05,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1903635013] [2021-11-07 01:20:05,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:20:05,792 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:20:05,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:20:05,815 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:20:05,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:20:07,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:20:07,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:20:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:20:07,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:08,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:20:08,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2021-11-07 01:20:08,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,201 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:08,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2021-11-07 01:20:08,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,284 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:08,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:20:08,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:08,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:08,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 71 [2021-11-07 01:20:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:20:08,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:09,204 INFO L354 Elim1Store]: treesize reduction 101, result has 25.7 percent of original size [2021-11-07 01:20:09,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 67 [2021-11-07 01:20:09,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 61 [2021-11-07 01:20:09,219 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 01:20:09,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 138 [2021-11-07 01:20:19,657 WARN L207 SmtUtils]: Spent 10.22 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-11-07 01:20:19,657 INFO L354 Elim1Store]: treesize reduction 87, result has 36.0 percent of original size [2021-11-07 01:20:19,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 79 [2021-11-07 01:20:19,686 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:20:19,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 75 [2021-11-07 01:20:19,705 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 01:20:19,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 140 [2021-11-07 01:20:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:20:20,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1903635013] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:20:20,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26583735] [2021-11-07 01:20:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:20:20,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:20:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:20,974 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:20:20,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:20:22,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:20:22,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:20:22,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:20:22,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:22,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:20:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 27 [2021-11-07 01:20:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,703 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:22,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-11-07 01:20:22,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:22,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2021-11-07 01:20:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:20:22,842 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:22,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 75 [2021-11-07 01:20:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:20:22,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:33,468 WARN L207 SmtUtils]: Spent 10.25 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-11-07 01:20:33,469 INFO L354 Elim1Store]: treesize reduction 87, result has 36.0 percent of original size [2021-11-07 01:20:33,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 83 [2021-11-07 01:20:33,490 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:20:33,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 79 [2021-11-07 01:20:33,504 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 01:20:33,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 156 [2021-11-07 01:20:33,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:33,670 INFO L354 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2021-11-07 01:20:33,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 67 [2021-11-07 01:20:33,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 61 [2021-11-07 01:20:33,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:33,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:33,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:20:33,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2021-11-07 01:20:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:20:34,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26583735] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:20:34,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:20:34,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 22 [2021-11-07 01:20:34,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695831298] [2021-11-07 01:20:34,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:20:34,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:20:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:20:34,322 INFO L87 Difference]: Start difference. First operand 2149 states and 4514 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:20:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:58,904 INFO L93 Difference]: Finished difference Result 4623 states and 9319 transitions. [2021-11-07 01:20:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-07 01:20:58,905 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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 45 [2021-11-07 01:20:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:58,919 INFO L225 Difference]: With dead ends: 4623 [2021-11-07 01:20:58,919 INFO L226 Difference]: Without dead ends: 4620 [2021-11-07 01:20:58,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 230 SyntacticMatches, 13 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2529 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1618, Invalid=5522, Unknown=0, NotChecked=0, Total=7140 [2021-11-07 01:20:58,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2021-11-07 01:20:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 3296. [2021-11-07 01:20:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3289 states have (on average 2.138035877166312) internal successors, (7032), 3295 states have internal predecessors, (7032), 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) [2021-11-07 01:20:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 7032 transitions. [2021-11-07 01:20:59,099 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 7032 transitions. Word has length 45 [2021-11-07 01:20:59,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:59,099 INFO L470 AbstractCegarLoop]: Abstraction has 3296 states and 7032 transitions. [2021-11-07 01:20:59,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:20:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 7032 transitions. [2021-11-07 01:20:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:20:59,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:59,103 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:59,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:59,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:59,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-07 01:20:59,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:59,711 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:20:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1979886674, now seen corresponding path program 5 times [2021-11-07 01:20:59,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:59,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213647305] [2021-11-07 01:20:59,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:20:59,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:59,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:59,716 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:59,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:21:00,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 01:21:00,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:21:00,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:21:00,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:01,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:21:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:21:01,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:01,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-11-07 01:21:01,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:01,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2021-11-07 01:21:01,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:01,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:01,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 75 [2021-11-07 01:21:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:01,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:02,467 INFO L354 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2021-11-07 01:21:02,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 68 [2021-11-07 01:21:02,486 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:21:02,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 68 [2021-11-07 01:21:02,507 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-07 01:21:02,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 313 [2021-11-07 01:21:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:03,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:03,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213647305] [2021-11-07 01:21:03,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213647305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:03,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [765237175] [2021-11-07 01:21:03,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:21:03,620 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:21:03,622 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:21:03,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 01:21:12,235 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 01:21:12,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:21:12,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:21:12,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:12,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:21:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:21:12,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,853 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:12,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 01:21:12,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:12,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2021-11-07 01:21:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:13,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:13,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:13,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2021-11-07 01:21:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 01:21:13,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:13,284 INFO L354 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2021-11-07 01:21:13,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 64 [2021-11-07 01:21:13,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 60 [2021-11-07 01:21:13,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 310 treesize of output 306 [2021-11-07 01:21:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:13,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [765237175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:13,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672835863] [2021-11-07 01:21:13,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 01:21:13,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:21:13,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:13,672 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:21:13,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 01:21:16,716 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 01:21:16,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:21:16,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:21:16,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:17,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:21:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2021-11-07 01:21:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,372 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:17,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-11-07 01:21:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,423 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:17,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2021-11-07 01:21:17,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:17,525 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:17,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 82 [2021-11-07 01:21:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:17,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:17,900 INFO L354 Elim1Store]: treesize reduction 32, result has 40.7 percent of original size [2021-11-07 01:21:17,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 65 [2021-11-07 01:21:17,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 61 [2021-11-07 01:21:17,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 311 treesize of output 307 [2021-11-07 01:21:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:18,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672835863] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:18,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:21:18,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12, 11, 11, 11] total 23 [2021-11-07 01:21:18,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945950137] [2021-11-07 01:21:18,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 01:21:18,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 01:21:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:21:18,778 INFO L87 Difference]: Start difference. First operand 3296 states and 7032 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:44,537 INFO L93 Difference]: Finished difference Result 5605 states and 11446 transitions. [2021-11-07 01:21:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-07 01:21:44,539 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:21:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:44,557 INFO L225 Difference]: With dead ends: 5605 [2021-11-07 01:21:44,558 INFO L226 Difference]: Without dead ends: 5601 [2021-11-07 01:21:44,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 233 SyntacticMatches, 9 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=2543, Invalid=9889, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 01:21:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5601 states. [2021-11-07 01:21:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5601 to 4057. [2021-11-07 01:21:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 4050 states have (on average 2.1498765432098765) internal successors, (8707), 4056 states have internal predecessors, (8707), 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) [2021-11-07 01:21:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 8707 transitions. [2021-11-07 01:21:44,754 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 8707 transitions. Word has length 45 [2021-11-07 01:21:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:44,754 INFO L470 AbstractCegarLoop]: Abstraction has 4057 states and 8707 transitions. [2021-11-07 01:21:44,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 8707 transitions. [2021-11-07 01:21:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:21:44,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:44,758 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:44,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:44,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:45,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:45,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:45,377 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:21:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -340105184, now seen corresponding path program 1 times [2021-11-07 01:21:45,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:45,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518196955] [2021-11-07 01:21:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:45,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:45,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:45,380 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:45,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-07 01:21:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:46,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:21:46,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:47,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:21:47,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-11-07 01:21:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-07 01:21:47,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:47,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-11-07 01:21:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:47,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:47,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2021-11-07 01:21:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:47,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:47,918 INFO L354 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2021-11-07 01:21:47,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 46 [2021-11-07 01:21:47,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 42 [2021-11-07 01:21:47,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 61 [2021-11-07 01:21:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:48,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:48,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518196955] [2021-11-07 01:21:48,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518196955] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:48,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1565606537] [2021-11-07 01:21:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:48,679 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:48,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:21:48,683 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:21:48,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-07 01:21:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:51,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:21:51,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:51,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 12 [2021-11-07 01:21:51,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:21:51,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-11-07 01:21:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 21 [2021-11-07 01:21:51,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,587 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:51,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:21:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:51,644 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:51,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 47 [2021-11-07 01:21:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:51,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:51,961 INFO L354 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2021-11-07 01:21:51,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 47 [2021-11-07 01:21:51,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 43 [2021-11-07 01:21:51,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 66 treesize of output 62 [2021-11-07 01:21:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:52,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1565606537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:52,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936870006] [2021-11-07 01:21:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:52,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:21:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:52,384 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:21:52,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 01:21:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:53,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:21:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:54,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:21:54,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 19 [2021-11-07 01:21:54,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-07 01:21:54,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:54,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 01:21:54,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:21:54,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:21:54,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2021-11-07 01:21:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:54,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:54,697 INFO L354 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2021-11-07 01:21:54,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 46 [2021-11-07 01:21:54,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 42 [2021-11-07 01:21:54,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 65 treesize of output 61 [2021-11-07 01:21:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:21:55,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936870006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:21:55,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:21:55,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 22 [2021-11-07 01:21:55,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84683295] [2021-11-07 01:21:55,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:21:55,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:55,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:21:55,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:21:55,073 INFO L87 Difference]: Start difference. First operand 4057 states and 8707 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:22:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:30,724 INFO L93 Difference]: Finished difference Result 8689 states and 17912 transitions. [2021-11-07 01:22:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-07 01:22:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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 45 [2021-11-07 01:22:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:30,751 INFO L225 Difference]: With dead ends: 8689 [2021-11-07 01:22:30,751 INFO L226 Difference]: Without dead ends: 8685 [2021-11-07 01:22:30,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 231 SyntacticMatches, 12 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6088 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=3234, Invalid=13022, Unknown=0, NotChecked=0, Total=16256 [2021-11-07 01:22:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8685 states. [2021-11-07 01:22:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8685 to 5399. [2021-11-07 01:22:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 5392 states have (on average 2.1593100890207717) internal successors, (11643), 5398 states have internal predecessors, (11643), 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) [2021-11-07 01:22:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 11643 transitions. [2021-11-07 01:22:31,009 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 11643 transitions. Word has length 45 [2021-11-07 01:22:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:31,010 INFO L470 AbstractCegarLoop]: Abstraction has 5399 states and 11643 transitions. [2021-11-07 01:22:31,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:22:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 11643 transitions. [2021-11-07 01:22:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:22:31,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:31,015 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:31,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:31,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:31,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:31,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:31,631 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:22:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1309514926, now seen corresponding path program 6 times [2021-11-07 01:22:31,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:31,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997085613] [2021-11-07 01:22:31,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 01:22:31,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:31,633 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:31,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-07 01:22:32,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-07 01:22:32,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:22:32,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:22:32,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:33,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 01:22:33,478 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-11-07 01:22:33,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2021-11-07 01:22:33,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:22:33,735 INFO L354 Elim1Store]: treesize reduction 22, result has 31.3 percent of original size [2021-11-07 01:22:33,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-11-07 01:22:33,978 INFO L354 Elim1Store]: treesize reduction 58, result has 30.1 percent of original size [2021-11-07 01:22:33,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 69 [2021-11-07 01:22:34,363 INFO L354 Elim1Store]: treesize reduction 105, result has 26.1 percent of original size [2021-11-07 01:22:34,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 110 [2021-11-07 01:22:34,842 INFO L354 Elim1Store]: treesize reduction 164, result has 23.0 percent of original size [2021-11-07 01:22:34,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 149 [2021-11-07 01:22:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:22:35,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:35,615 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-07 01:22:35,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 52 [2021-11-07 01:22:35,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:22:35,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2021-11-07 01:22:35,658 INFO L354 Elim1Store]: treesize reduction 1, result has 87.5 percent of original size [2021-11-07 01:22:35,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 245 [2021-11-07 01:22:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:22:36,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:36,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997085613] [2021-11-07 01:22:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997085613] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:22:36,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:22:36,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2021-11-07 01:22:36,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464253753] [2021-11-07 01:22:36,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:22:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:22:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:22:36,302 INFO L87 Difference]: Start difference. First operand 5399 states and 11643 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-07 01:22:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:49,715 INFO L93 Difference]: Finished difference Result 9056 states and 19513 transitions. [2021-11-07 01:22:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 01:22:49,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 45 [2021-11-07 01:22:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:49,738 INFO L225 Difference]: With dead ends: 9056 [2021-11-07 01:22:49,739 INFO L226 Difference]: Without dead ends: 9056 [2021-11-07 01:22:49,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 01:22:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9056 states. [2021-11-07 01:22:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9056 to 5148. [2021-11-07 01:22:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 5141 states have (on average 2.1388834857031704) internal successors, (10996), 5147 states have internal predecessors, (10996), 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) [2021-11-07 01:22:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 10996 transitions. [2021-11-07 01:22:49,987 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 10996 transitions. Word has length 45 [2021-11-07 01:22:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:49,988 INFO L470 AbstractCegarLoop]: Abstraction has 5148 states and 10996 transitions. [2021-11-07 01:22:49,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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) [2021-11-07 01:22:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 10996 transitions. [2021-11-07 01:22:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:22:49,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:49,992 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:50,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:50,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:50,206 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:22:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1219248196, now seen corresponding path program 7 times [2021-11-07 01:22:50,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:50,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283810764] [2021-11-07 01:22:50,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:22:50,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:50,209 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:50,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-07 01:22:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:51,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:22:51,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:52,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:22:52,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:22:52,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,390 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:22:52,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2021-11-07 01:22:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,462 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:22:52,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2021-11-07 01:22:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:22:52,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:22:52,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 01:22:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:22:52,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:53,086 INFO L354 Elim1Store]: treesize reduction 82, result has 26.8 percent of original size [2021-11-07 01:22:53,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 52 [2021-11-07 01:22:53,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 60 treesize of output 50 [2021-11-07 01:22:53,096 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 01:22:53,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 93 [2021-11-07 01:22:53,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:03,215 WARN L207 SmtUtils]: Spent 10.08 s on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2021-11-07 01:23:03,215 INFO L354 Elim1Store]: treesize reduction 42, result has 49.4 percent of original size [2021-11-07 01:23:03,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 73 [2021-11-07 01:23:03,232 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:23:03,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2021-11-07 01:23:03,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:03,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:03,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:03,252 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-11-07 01:23:03,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 43 [2021-11-07 01:23:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:23:04,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:04,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283810764] [2021-11-07 01:23:04,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283810764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:04,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [537621961] [2021-11-07 01:23:04,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:23:04,332 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:04,333 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-07 01:23:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:06,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:23:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:07,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:23:07,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2021-11-07 01:23:07,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:23:07,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 01:23:07,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,194 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:23:07,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 01:23:07,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:07,264 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:23:07,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 71 [2021-11-07 01:23:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:23:07,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:17,624 WARN L207 SmtUtils]: Spent 10.10 s on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2021-11-07 01:23:17,624 INFO L354 Elim1Store]: treesize reduction 71, result has 36.6 percent of original size [2021-11-07 01:23:17,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 73 [2021-11-07 01:23:17,638 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:23:17,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 69 [2021-11-07 01:23:17,647 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-07 01:23:17,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 144 [2021-11-07 01:23:17,790 INFO L354 Elim1Store]: treesize reduction 82, result has 26.8 percent of original size [2021-11-07 01:23:17,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 56 [2021-11-07 01:23:17,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 56 treesize of output 50 [2021-11-07 01:23:17,800 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-07 01:23:17,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 109 [2021-11-07 01:23:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:23:18,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [537621961] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:18,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261859161] [2021-11-07 01:23:18,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:23:18,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:23:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:23:18,647 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:23:18,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 01:23:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:20,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:23:20,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:20,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:23:20,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:23:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:23:20,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2021-11-07 01:23:20,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,903 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:23:20,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2021-11-07 01:23:20,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:23:20,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:23:20,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2021-11-07 01:23:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:23:21,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:21,377 INFO L354 Elim1Store]: treesize reduction 82, result has 26.8 percent of original size [2021-11-07 01:23:21,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 56 [2021-11-07 01:23:21,390 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:23:21,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 58 [2021-11-07 01:23:21,417 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-11-07 01:23:21,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 116 [2021-11-07 01:23:21,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:31,538 WARN L207 SmtUtils]: Spent 10.08 s on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2021-11-07 01:23:31,538 INFO L354 Elim1Store]: treesize reduction 42, result has 49.4 percent of original size [2021-11-07 01:23:31,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 77 [2021-11-07 01:23:31,556 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:23:31,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 73 [2021-11-07 01:23:31,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:31,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:31,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:23:31,574 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-11-07 01:23:31,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 47 [2021-11-07 01:23:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:23:32,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261859161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:32,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:23:32,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 22 [2021-11-07 01:23:32,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492377681] [2021-11-07 01:23:32,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:23:32,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:23:32,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:23:32,212 INFO L87 Difference]: Start difference. First operand 5148 states and 10996 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:24:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:01,922 INFO L93 Difference]: Finished difference Result 8983 states and 18517 transitions. [2021-11-07 01:24:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 01:24:01,930 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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 45 [2021-11-07 01:24:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:01,946 INFO L225 Difference]: With dead ends: 8983 [2021-11-07 01:24:01,946 INFO L226 Difference]: Without dead ends: 8979 [2021-11-07 01:24:01,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 230 SyntacticMatches, 13 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3309 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1762, Invalid=7168, Unknown=0, NotChecked=0, Total=8930 [2021-11-07 01:24:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2021-11-07 01:24:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 5994. [2021-11-07 01:24:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 5987 states have (on average 2.14648404877234) internal successors, (12851), 5993 states have internal predecessors, (12851), 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) [2021-11-07 01:24:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 12851 transitions. [2021-11-07 01:24:02,189 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 12851 transitions. Word has length 45 [2021-11-07 01:24:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:02,189 INFO L470 AbstractCegarLoop]: Abstraction has 5994 states and 12851 transitions. [2021-11-07 01:24:02,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 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) [2021-11-07 01:24:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 12851 transitions. [2021-11-07 01:24:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:24:02,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:02,194 INFO L513 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:02,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:02,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-07 01:24:02,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-11-07 01:24:02,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:02,802 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 01:24:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1983932022, now seen corresponding path program 1 times [2021-11-07 01:24:02,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:02,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164366927] [2021-11-07 01:24:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:02,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:02,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:02,805 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:02,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-07 01:24:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:04,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:24:04,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:04,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:24:04,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:04,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 [2021-11-07 01:24:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-07 01:24:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 01:24:05,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2021-11-07 01:24:05,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 83 [2021-11-07 01:24:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 107 [2021-11-07 01:24:05,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:05,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 124 [2021-11-07 01:24:06,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:06,416 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:24:06,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 139 [2021-11-07 01:24:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:24:06,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:17,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:17,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:24:27,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:27,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164366927] [2021-11-07 01:24:27,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164366927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:27,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [274823854] [2021-11-07 01:24:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:27,204 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:27,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:27,205 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:27,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-07 01:24:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:30,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 01:24:30,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:30,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 13 [2021-11-07 01:24:30,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:24:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 21 [2021-11-07 01:24:30,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2021-11-07 01:24:30,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-07 01:24:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 65 [2021-11-07 01:24:30,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 80 [2021-11-07 01:24:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:30,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 106 [2021-11-07 01:24:31,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 123 [2021-11-07 01:24:31,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:31,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:24:31,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 134 [2021-11-07 01:24:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:24:31,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:38,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:38,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:24:39,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [274823854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:39,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115430379] [2021-11-07 01:24:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:39,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:24:39,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:24:39,177 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:24:39,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea093370-9b5e-410d-8a47-122e3bcdd4a0/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 01:24:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:41,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:24:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:41,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 01:24:41,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 23 [2021-11-07 01:24:41,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 01:24:41,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 01:24:41,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:41,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 64 [2021-11-07 01:24:42,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 84 [2021-11-07 01:24:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 103 [2021-11-07 01:24:42,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 126 [2021-11-07 01:24:42,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:24:42,753 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:24:42,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 134 [2021-11-07 01:24:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:24:42,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:52,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:24:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:24:52,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115430379] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:52,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:24:52,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15, 14, 15, 16] total 33 [2021-11-07 01:24:52,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875722219] [2021-11-07 01:24:52,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 01:24:52,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 01:24:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=914, Unknown=4, NotChecked=0, Total=1122 [2021-11-07 01:24:52,849 INFO L87 Difference]: Start difference. First operand 5994 states and 12851 transitions. Second operand has 34 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:35,878 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification. DAG size of input: 131 DAG size of output: 100