./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:20:51,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:20:51,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:20:51,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:20:51,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:20:51,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:20:51,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:20:51,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:20:51,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:20:51,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:20:51,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:20:51,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:20:51,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:20:51,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:20:51,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:20:51,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:20:51,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:20:51,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:20:51,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:20:51,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:20:51,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:20:51,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:20:51,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:20:51,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:20:51,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:20:51,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:20:51,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:20:51,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:20:51,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:20:51,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:20:51,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:20:51,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:20:51,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:20:51,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:20:51,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:20:51,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:20:51,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:20:51,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:20:51,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:20:51,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:20:51,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:20:51,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:20:51,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:20:51,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:20:51,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:20:51,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:20:51,518 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:20:51,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:20:51,519 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:20:51,519 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:20:51,519 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:20:51,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:20:51,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:20:51,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:20:51,520 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:20:51,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:20:51,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:20:51,521 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:20:51,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:20:51,522 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:20:51,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:20:51,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:20:51,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:20:51,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:20:51,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:20:51,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:20:51,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:20:51,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:20:51,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:20:51,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:20:51,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:20:51,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:20:51,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:20:51,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:51,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:20:51,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:20:51,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:20:51,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:20:51,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:20:51,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:20:51,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:20:51,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:20:51,528 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_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2021-11-12 22:20:51,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:20:51,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:20:51,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:20:51,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:20:51,849 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:20:51,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread/stack-1.i [2021-11-12 22:20:51,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/386feb261/7b0e04b2c462475b8658f6c3d3297299/FLAG4993c385c [2021-11-12 22:20:52,627 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:20:52,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/sv-benchmarks/c/pthread/stack-1.i [2021-11-12 22:20:52,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/386feb261/7b0e04b2c462475b8658f6c3d3297299/FLAG4993c385c [2021-11-12 22:20:52,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/386feb261/7b0e04b2c462475b8658f6c3d3297299 [2021-11-12 22:20:52,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:20:52,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:20:52,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:52,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:20:52,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:20:52,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:52" (1/1) ... [2021-11-12 22:20:52,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b2b7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:52, skipping insertion in model container [2021-11-12 22:20:52,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:52" (1/1) ... [2021-11-12 22:20:52,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:20:52,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:20:53,450 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-11-12 22:20:53,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:20:53,493 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:20:53,529 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-11-12 22:20:53,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:20:53,604 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:20:53,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53 WrapperNode [2021-11-12 22:20:53,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:53,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:20:53,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:20:53,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:20:53,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:20:53,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:20:53,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:20:53,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:20:53,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:20:53,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:20:53,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:20:53,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:20:53,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (1/1) ... [2021-11-12 22:20:53,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:53,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:20:53,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:20:53,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:20:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-12 22:20:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-12 22:20:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-12 22:20:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-12 22:20:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:20:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:20:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:20:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:20:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-12 22:20:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:20:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:20:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:20:53,804 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 22:20:54,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:20:54,319 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:20:54,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:20:54 BoogieIcfgContainer [2021-11-12 22:20:54,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:20:54,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:20:54,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:20:54,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:20:54,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:20:52" (1/3) ... [2021-11-12 22:20:54,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7259f62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:20:54, skipping insertion in model container [2021-11-12 22:20:54,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:53" (2/3) ... [2021-11-12 22:20:54,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7259f62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:20:54, skipping insertion in model container [2021-11-12 22:20:54,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:20:54" (3/3) ... [2021-11-12 22:20:54,351 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-11-12 22:20:54,361 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 22:20:54,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:20:54,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 22:20:54,361 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 22:20:54,412 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,412 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,412 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,412 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,413 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,413 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,413 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,413 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,413 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,416 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,417 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,417 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,418 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,418 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,418 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,419 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,419 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,419 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,419 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,420 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,420 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,421 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,421 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,422 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,422 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,422 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,423 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,423 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,423 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,423 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,423 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,424 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,424 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,424 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,424 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,424 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,425 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,425 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,425 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,425 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,426 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,426 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,426 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,427 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,427 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,427 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,428 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,428 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,428 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,428 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,428 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,429 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,429 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,429 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,429 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,430 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,430 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,430 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,430 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,430 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,431 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,431 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,431 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,431 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,431 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,431 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,433 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,433 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,433 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,435 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,435 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,436 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,436 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,439 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,439 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,439 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,440 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,440 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,447 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,447 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,453 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,453 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,453 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,453 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,453 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,457 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,457 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,461 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,461 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,461 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,461 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,462 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,462 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,462 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,462 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,462 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,463 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,463 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,463 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,463 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,464 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,464 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,464 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,465 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,465 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,466 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,466 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,467 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,467 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,467 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,467 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,468 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,468 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,468 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,468 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,469 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,469 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,469 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,469 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,470 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,470 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,470 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,470 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,470 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,470 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,471 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,471 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,471 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,471 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,471 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,471 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,472 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,474 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,476 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,476 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,476 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,476 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,476 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,477 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,477 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,477 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,477 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,478 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,482 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,482 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,482 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,483 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,483 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,483 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,483 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,484 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,484 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,485 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,495 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,495 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,502 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,502 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,503 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,503 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,503 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,503 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,504 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,504 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,504 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,504 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,505 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,505 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,505 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,506 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,506 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,506 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,506 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,506 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,507 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,507 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,507 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,507 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,507 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,511 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,514 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,514 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,514 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,514 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,514 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,515 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:20:54,518 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-12 22:20:54,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:20:54,594 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 [2021-11-12 22:20:54,595 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-12 22:20:54,615 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 22:20:54,634 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 174 transitions, 364 flow [2021-11-12 22:20:54,636 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 174 transitions, 364 flow [2021-11-12 22:20:54,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 174 transitions, 364 flow [2021-11-12 22:20:54,721 INFO L129 PetriNetUnfolder]: 10/172 cut-off events. [2021-11-12 22:20:54,722 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-12 22:20:54,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 10/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 419 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2021-11-12 22:20:54,741 INFO L116 LiptonReduction]: Number of co-enabled transitions 8324 [2021-11-12 22:21:02,414 INFO L131 LiptonReduction]: Checked pairs total: 11187 [2021-11-12 22:21:02,414 INFO L133 LiptonReduction]: Total number of compositions: 168 [2021-11-12 22:21:02,432 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 88 flow [2021-11-12 22:21:02,466 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:21:02,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:02,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:21:02,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash -511841007, now seen corresponding path program 1 times [2021-11-12 22:21:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:02,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745763211] [2021-11-12 22:21:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:02,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:02,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:02,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745763211] [2021-11-12 22:21:02,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745763211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:02,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:02,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:21:02,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108828950] [2021-11-12 22:21:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:02,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:02,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:02,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:02,855 INFO L87 Difference]: Start difference. First operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:03,025 INFO L93 Difference]: Finished difference Result 414 states and 1064 transitions. [2021-11-12 22:21:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-11-12 22:21:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:03,058 INFO L225 Difference]: With dead ends: 414 [2021-11-12 22:21:03,058 INFO L226 Difference]: Without dead ends: 396 [2021-11-12 22:21:03,060 INFO L932 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 [2021-11-12 22:21:03,067 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:03,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 94.64ms Time] [2021-11-12 22:21:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-12 22:21:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 372. [2021-11-12 22:21:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.6856368563685638) internal successors, (991), 371 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 991 transitions. [2021-11-12 22:21:03,158 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 991 transitions. Word has length 6 [2021-11-12 22:21:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:03,158 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 991 transitions. [2021-11-12 22:21:03,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 991 transitions. [2021-11-12 22:21:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:21:03,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:03,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:03,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:21:03,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash -977593263, now seen corresponding path program 1 times [2021-11-12 22:21:03,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:03,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2613623] [2021-11-12 22:21:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:03,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:03,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:03,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2613623] [2021-11-12 22:21:03,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2613623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:03,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:03,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:21:03,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320737326] [2021-11-12 22:21:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:03,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:03,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:03,278 INFO L87 Difference]: Start difference. First operand 372 states and 991 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:03,367 INFO L93 Difference]: Finished difference Result 410 states and 1089 transitions. [2021-11-12 22:21:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-12 22:21:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:03,373 INFO L225 Difference]: With dead ends: 410 [2021-11-12 22:21:03,373 INFO L226 Difference]: Without dead ends: 410 [2021-11-12 22:21:03,373 INFO L932 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 [2021-11-12 22:21:03,375 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:03,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 71 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 78.20ms Time] [2021-11-12 22:21:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-12 22:21:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-12 22:21:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 407 states have (on average 2.675675675675676) internal successors, (1089), 409 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1089 transitions. [2021-11-12 22:21:03,407 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1089 transitions. Word has length 10 [2021-11-12 22:21:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:03,407 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1089 transitions. [2021-11-12 22:21:03,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1089 transitions. [2021-11-12 22:21:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:21:03,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:03,409 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:03,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:21:03,410 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:03,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:03,410 INFO L85 PathProgramCache]: Analyzing trace with hash 693549868, now seen corresponding path program 1 times [2021-11-12 22:21:03,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:03,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128305024] [2021-11-12 22:21:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:03,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:03,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:03,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128305024] [2021-11-12 22:21:03,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128305024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:03,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876825506] [2021-11-12 22:21:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:03,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:03,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:03,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:03,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:21:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:03,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:21:03,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:03,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:03,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876825506] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:03,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1183020235] [2021-11-12 22:21:03,815 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:610) 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) [2021-11-12 22:21:03,818 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:21:03,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-11-12 22:21:03,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611480713] [2021-11-12 22:21:03,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:21:03,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:21:03,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:03,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:21:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:03,821 INFO L87 Difference]: Start difference. First operand 410 states and 1089 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:04,236 INFO L93 Difference]: Finished difference Result 998 states and 2565 transitions. [2021-11-12 22:21:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:21:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:21:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:04,246 INFO L225 Difference]: With dead ends: 998 [2021-11-12 22:21:04,246 INFO L226 Difference]: Without dead ends: 986 [2021-11-12 22:21:04,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:21:04,248 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 252.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:04,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 0 Invalid, 318 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [14 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 338.51ms Time] [2021-11-12 22:21:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-11-12 22:21:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 678. [2021-11-12 22:21:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 675 states have (on average 2.6977777777777776) internal successors, (1821), 677 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:04,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1821 transitions. [2021-11-12 22:21:04,316 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1821 transitions. Word has length 13 [2021-11-12 22:21:04,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:04,316 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1821 transitions. [2021-11-12 22:21:04,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1821 transitions. [2021-11-12 22:21:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 22:21:04,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:04,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:04,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:04,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:04,520 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:04,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:04,521 INFO L85 PathProgramCache]: Analyzing trace with hash -303713543, now seen corresponding path program 1 times [2021-11-12 22:21:04,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:04,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196105120] [2021-11-12 22:21:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:04,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:04,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:04,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196105120] [2021-11-12 22:21:04,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196105120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:04,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:04,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:21:04,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794454791] [2021-11-12 22:21:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:04,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:04,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:04,608 INFO L87 Difference]: Start difference. First operand 678 states and 1821 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 22:21:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:04,670 INFO L93 Difference]: Finished difference Result 300 states and 681 transitions. [2021-11-12 22:21:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:04,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 16 [2021-11-12 22:21:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:04,673 INFO L225 Difference]: With dead ends: 300 [2021-11-12 22:21:04,673 INFO L226 Difference]: Without dead ends: 300 [2021-11-12 22:21:04,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:04,679 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:04,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 56.63ms Time] [2021-11-12 22:21:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-12 22:21:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 282. [2021-11-12 22:21:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 2.25) internal successors, (630), 281 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 630 transitions. [2021-11-12 22:21:04,695 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 630 transitions. Word has length 16 [2021-11-12 22:21:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:04,696 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 630 transitions. [2021-11-12 22:21:04,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 22:21:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 630 transitions. [2021-11-12 22:21:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 22:21:04,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:04,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:04,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:21:04,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 421676605, now seen corresponding path program 1 times [2021-11-12 22:21:04,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:04,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571402877] [2021-11-12 22:21:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:04,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:04,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:04,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571402877] [2021-11-12 22:21:04,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571402877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:04,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:04,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:21:04,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055676442] [2021-11-12 22:21:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:04,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:04,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:04,788 INFO L87 Difference]: Start difference. First operand 282 states and 630 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-12 22:21:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:04,873 INFO L93 Difference]: Finished difference Result 340 states and 756 transitions. [2021-11-12 22:21:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:04,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 17 [2021-11-12 22:21:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:04,878 INFO L225 Difference]: With dead ends: 340 [2021-11-12 22:21:04,878 INFO L226 Difference]: Without dead ends: 340 [2021-11-12 22:21:04,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:04,879 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:04,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 76.27ms Time] [2021-11-12 22:21:04,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-12 22:21:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 284. [2021-11-12 22:21:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 2.2588652482269502) internal successors, (637), 283 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 637 transitions. [2021-11-12 22:21:04,895 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 637 transitions. Word has length 17 [2021-11-12 22:21:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:04,897 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 637 transitions. [2021-11-12 22:21:04,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-12 22:21:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 637 transitions. [2021-11-12 22:21:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:21:04,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:04,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:04,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:21:04,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2018170012, now seen corresponding path program 1 times [2021-11-12 22:21:04,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:04,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580269373] [2021-11-12 22:21:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:04,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:05,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:05,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580269373] [2021-11-12 22:21:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580269373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:05,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:05,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:21:05,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805461550] [2021-11-12 22:21:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:05,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:21:05,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:21:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:21:05,530 INFO L87 Difference]: Start difference. First operand 284 states and 637 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:07,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:07,286 INFO L93 Difference]: Finished difference Result 502 states and 1079 transitions. [2021-11-12 22:21:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:21:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-12 22:21:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:07,290 INFO L225 Difference]: With dead ends: 502 [2021-11-12 22:21:07,291 INFO L226 Difference]: Without dead ends: 444 [2021-11-12 22:21:07,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2021-11-12 22:21:07,292 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 721.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 838.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:07,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 1011 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [25 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 838.42ms Time] [2021-11-12 22:21:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-12 22:21:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 334. [2021-11-12 22:21:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 332 states have (on average 2.253012048192771) internal successors, (748), 333 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 748 transitions. [2021-11-12 22:21:07,322 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 748 transitions. Word has length 21 [2021-11-12 22:21:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:07,322 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 748 transitions. [2021-11-12 22:21:07,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 748 transitions. [2021-11-12 22:21:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:21:07,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:07,338 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-12 22:21:07,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:21:07,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1126798452, now seen corresponding path program 2 times [2021-11-12 22:21:07,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:07,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041609959] [2021-11-12 22:21:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:07,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:07,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:07,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041609959] [2021-11-12 22:21:07,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041609959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:07,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913918365] [2021-11-12 22:21:07,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:21:07,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:07,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:07,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:07,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:21:07,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-12 22:21:07,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:21:07,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:21:07,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:07,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:07,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913918365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:07,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924143645] [2021-11-12 22:21:07,828 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:610) 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) [2021-11-12 22:21:07,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:21:07,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-11-12 22:21:07,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126565511] [2021-11-12 22:21:07,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:21:07,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:21:07,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:21:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:21:07,833 INFO L87 Difference]: Start difference. First operand 334 states and 748 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:08,133 INFO L93 Difference]: Finished difference Result 666 states and 1428 transitions. [2021-11-12 22:21:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:21:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2021-11-12 22:21:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:08,140 INFO L225 Difference]: With dead ends: 666 [2021-11-12 22:21:08,140 INFO L226 Difference]: Without dead ends: 666 [2021-11-12 22:21:08,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:21:08,142 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 192 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:08,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 0 Invalid, 247 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 241.35ms Time] [2021-11-12 22:21:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-12 22:21:08,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 446. [2021-11-12 22:21:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 2.2567567567567566) internal successors, (1002), 445 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1002 transitions. [2021-11-12 22:21:08,164 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1002 transitions. Word has length 27 [2021-11-12 22:21:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:08,164 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1002 transitions. [2021-11-12 22:21:08,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1002 transitions. [2021-11-12 22:21:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 22:21:08,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:08,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:08,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:08,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:08,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1335972575, now seen corresponding path program 2 times [2021-11-12 22:21:08,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:08,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364659986] [2021-11-12 22:21:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:08,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:08,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:08,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364659986] [2021-11-12 22:21:08,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364659986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:08,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131526708] [2021-11-12 22:21:08,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:21:08,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:08,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:08,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 22:21:09,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 22:21:09,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:21:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-12 22:21:09,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:09,111 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:21:09,141 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 853 treesize of output 787 [2021-11-12 22:21:09,718 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 64 treesize of output 60 [2021-11-12 22:21:09,972 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-12 22:21:09,972 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 71 treesize of output 43 [2021-11-12 22:21:10,354 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 109 treesize of output 45 [2021-11-12 22:21:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:21:10,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:11,803 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_41| Int)) (not (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_41|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ (* 4294967296 (div .cse0 4294967296)) 4294967294))))) is different from false [2021-11-12 22:21:20,977 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_41| Int)) (not (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_41|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= (+ (* 4294967296 (div .cse0 4294967296)) 4294967294) .cse0)))) is different from false [2021-11-12 22:21:20,992 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 326 treesize of output 294 [2021-11-12 22:21:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 2 not checked. [2021-11-12 22:21:21,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131526708] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:21,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:21:21,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 13] total 38 [2021-11-12 22:21:21,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341025997] [2021-11-12 22:21:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:21,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:21:21,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:21:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1275, Unknown=6, NotChecked=146, Total=1560 [2021-11-12 22:21:21,380 INFO L87 Difference]: Start difference. First operand 446 states and 1002 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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) [2021-11-12 22:21:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:25,495 INFO L93 Difference]: Finished difference Result 860 states and 1889 transitions. [2021-11-12 22:21:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-12 22:21:25,496 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-12 22:21:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:25,502 INFO L225 Difference]: With dead ends: 860 [2021-11-12 22:21:25,503 INFO L226 Difference]: Without dead ends: 860 [2021-11-12 22:21:25,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=501, Invalid=3407, Unknown=6, NotChecked=246, Total=4160 [2021-11-12 22:21:25,507 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 281 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1362.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.37ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1610.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:25,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 1338 Unknown, 0 Unchecked, 10.37ms Time], IncrementalHoareTripleChecker [47 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1610.38ms Time] [2021-11-12 22:21:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-12 22:21:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 502. [2021-11-12 22:21:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 500 states have (on average 2.264) internal successors, (1132), 501 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1132 transitions. [2021-11-12 22:21:25,531 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1132 transitions. Word has length 28 [2021-11-12 22:21:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:25,533 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1132 transitions. [2021-11-12 22:21:25,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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) [2021-11-12 22:21:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1132 transitions. [2021-11-12 22:21:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 22:21:25,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:25,535 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:25,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:25,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:25,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1504551215, now seen corresponding path program 1 times [2021-11-12 22:21:25,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:25,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908777960] [2021-11-12 22:21:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:25,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:21:25,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:25,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908777960] [2021-11-12 22:21:25,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908777960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:25,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793511160] [2021-11-12 22:21:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:25,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:25,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:25,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:25,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 22:21:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:25,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:21:25,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:21:26,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:21:26,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793511160] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:26,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [580968522] [2021-11-12 22:21:26,162 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:610) 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) [2021-11-12 22:21:26,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:21:26,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-11-12 22:21:26,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548807625] [2021-11-12 22:21:26,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:21:26,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:21:26,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:26,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:21:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:21:26,164 INFO L87 Difference]: Start difference. First operand 502 states and 1132 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:26,578 INFO L93 Difference]: Finished difference Result 784 states and 1682 transitions. [2021-11-12 22:21:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:21:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2021-11-12 22:21:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:26,584 INFO L225 Difference]: With dead ends: 784 [2021-11-12 22:21:26,585 INFO L226 Difference]: Without dead ends: 784 [2021-11-12 22:21:26,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:21:26,587 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 273.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 330.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:26,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 497 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [12 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 330.47ms Time] [2021-11-12 22:21:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-11-12 22:21:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 538. [2021-11-12 22:21:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 536 states have (on average 2.291044776119403) internal successors, (1228), 537 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1228 transitions. [2021-11-12 22:21:26,610 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1228 transitions. Word has length 31 [2021-11-12 22:21:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:26,610 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1228 transitions. [2021-11-12 22:21:26,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1228 transitions. [2021-11-12 22:21:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:21:26,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:26,615 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:26,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:26,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-12 22:21:26,843 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:21:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash 553363350, now seen corresponding path program 1 times [2021-11-12 22:21:26,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:26,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569571847] [2021-11-12 22:21:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:26,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:27,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:27,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569571847] [2021-11-12 22:21:27,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569571847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:27,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373715449] [2021-11-12 22:21:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:27,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:27,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:27,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:27,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 22:21:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:27,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-12 22:21:27,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:27,854 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:21:27,854 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 474 treesize of output 440 [2021-11-12 22:21:28,483 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 64 treesize of output 60 [2021-11-12 22:21:28,986 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:21:28,986 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 1 case distinctions, treesize of input 36 treesize of output 31 [2021-11-12 22:21:29,103 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:21:29,104 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 30 treesize of output 25 [2021-11-12 22:21:29,494 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-12 22:21:29,494 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 70 treesize of output 41 [2021-11-12 22:21:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:29,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:05,038 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork0_push_~stack#1.offset| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= (+ (* 4294967296 (div .cse0 4294967296)) 4294967294) .cse0))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0))) is different from false [2021-11-12 22:22:07,114 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ (* 4294967296 (div .cse0 4294967296)) 4294967294)))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0))) is different from false [2021-11-12 22:22:09,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|))) is different from false [2021-11-12 22:22:10,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 1)))) is different from false [2021-11-12 22:22:12,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= (+ 4294967294 (* 4294967296 (div .cse0 4294967296))) .cse0))))) is different from false [2021-11-12 22:22:12,716 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:22:12,738 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 607 treesize of output 575 [2021-11-12 22:22:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-12 22:22:15,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373715449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:22:15,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1843059603] [2021-11-12 22:22:15,729 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:610) 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) [2021-11-12 22:22:15,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:22:15,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 21] total 54 [2021-11-12 22:22:15,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152524393] [2021-11-12 22:22:15,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:22:15,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-12 22:22:15,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:22:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-12 22:22:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2326, Unknown=26, NotChecked=510, Total=3080 [2021-11-12 22:22:15,734 INFO L87 Difference]: Start difference. First operand 538 states and 1228 transitions. Second operand has 56 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:17,499 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (= c_~top~0 0) (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= (+ 4294967294 (* 4294967296 (div .cse0 4294967296))) .cse0))))) (= |c_~#arr~0.offset| 0) (<= 0 |c_t1Thread1of1ForFork0_push_~x#1|) (<= 0 |c_t1Thread1of1ForFork0_push_#in~x#1|) (<= .cse2 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (<= |c_t1Thread1of1ForFork0_push_#in~x#1| 4) (<= |c_t1Thread1of1ForFork0_push_~x#1| 4) (= |c_t1Thread1of1ForFork0_push_~stack#1.offset| 0) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 0 .cse2))) is different from false [2021-11-12 22:22:18,816 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (= |c_~#arr~0.offset| 0) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 1)))) (<= .cse2 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse2) (= |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 0))) is different from false [2021-11-12 22:22:20,547 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|))) (= |c_~#arr~0.offset| 0) (<= .cse2 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (<= c_~top~0 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse2) (<= 4 (* 4 c_~top~0)))) is different from false [2021-11-12 22:22:22,602 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) 0))) (and (<= 0 .cse0) (= |c_~#arr~0.offset| 0) (<= .cse0 4) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (not (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse1 (+ (* 4294967296 (div .cse1 4294967296)) 4294967294)))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0))) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (<= c_~top~0 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 4 (* 4 c_~top~0)))) is different from false [2021-11-12 22:22:23,837 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base|) 0))) (and (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (= |c_~#arr~0.offset| 0) (<= 0 .cse0) (= |c_t1Thread1of1ForFork0_push_~stack#1.offset| 0) (<= c_~top~0 1) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork0_push_~stack#1.offset| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= (+ (* 4294967296 (div .cse1 4294967296)) 4294967294) .cse1))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0))) (not (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_ULTIMATE.start_main_~#id2~0#1.base|)) (<= .cse0 4) (<= 4 (* 4 c_~top~0)))) is different from false [2021-11-12 22:22:25,680 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (not (= |c_t1Thread1of1ForFork0_push_~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_~x#1| 4294967296))))) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= (+ 4294967294 (* 4294967296 (div .cse0 4294967296))) .cse0))))) (= |c_~#arr~0.offset| 0) (<= .cse2 4) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_~stack#1.offset|) (<= 2 c_~top~0) (<= c_~top~0 2) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 0 .cse2) (not (= |c_t1Thread1of1ForFork0_push_#in~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_#in~x#1| 4294967296))))))) is different from false [2021-11-12 22:22:28,409 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_t2Thread1of1ForFork1_pop_~stack#1.base|) 0)) (.cse3 (select (select |c_#memory_int| |c_~#arr~0.base|) 0)) (.cse4 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base|) 0))) (and (<= 1 c_~top~0) (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (not (= |c_t1Thread1of1ForFork0_push_~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_~x#1| 4294967296))))) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= (+ 4294967294 (* 4294967296 (div .cse0 4294967296))) .cse0))))) (<= .cse2 4) (= |c_~#arr~0.offset| 0) (<= .cse3 4) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_~stack#1.offset|) (<= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (<= 0 .cse4) (= |c_t1Thread1of1ForFork0_push_~stack#1.offset| 0) (<= c_~top~0 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 0 .cse2) (<= 0 .cse3) (not (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_ULTIMATE.start_main_~#id2~0#1.base|)) (<= .cse4 4) (<= 4 (* 4 c_~top~0)) (= |c_t2Thread1of1ForFork1_pop_~stack#1.base| |c_~#arr~0.base|) (not (= |c_t1Thread1of1ForFork0_push_#in~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_#in~x#1| 4294967296))))))) is different from false [2021-11-12 22:22:30,489 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (= |c_~#arr~0.offset| 0) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 1)))) (<= .cse2 4) (<= |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse2) (<= 1 |c_t1Thread1of1ForFork0_inc_top_#t~post33#1|))) is different from false [2021-11-12 22:22:32,041 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|))) (= |c_~#arr~0.offset| 0) (<= .cse2 4) (<= 2 c_~top~0) (<= c_~top~0 2) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse2))) is different from false [2021-11-12 22:22:36,586 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_t2Thread1of1ForFork1_pop_~stack#1.base|))) (and (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (not (= |c_t1Thread1of1ForFork0_push_~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_~x#1| 4294967296))))) (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_43| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_95| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_114| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| |c_~#arr~0.offset|) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_95| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_114| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_43|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= (+ 4294967294 (* 4294967296 (div .cse0 4294967296))) .cse0))))) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_~stack#1.offset|) (not (let ((.cse2 (select .cse3 (+ (* |c_t2Thread1of1ForFork1_get_top_#res#1| 4) |c_t2Thread1of1ForFork1_pop_~stack#1.offset|)))) (= (+ 4294967294 (* 4294967296 (div .cse2 4294967296))) .cse2))) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (not (let ((.cse4 (select .cse3 (+ (* c_~top~0 4) |c_t2Thread1of1ForFork1_pop_~stack#1.offset|)))) (= (+ (* 4294967296 (div .cse4 4294967296)) 4294967294) .cse4))))) is different from false [2021-11-12 22:22:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:36,977 INFO L93 Difference]: Finished difference Result 1377 states and 3026 transitions. [2021-11-12 22:22:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-12 22:22:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 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 36 [2021-11-12 22:22:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:36,986 INFO L225 Difference]: With dead ends: 1377 [2021-11-12 22:22:36,987 INFO L226 Difference]: Without dead ends: 1299 [2021-11-12 22:22:36,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 64.9s TimeCoverageRelationStatistics Valid=497, Invalid=5378, Unknown=37, NotChecked=2460, Total=8372 [2021-11-12 22:22:36,990 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 407 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2314.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.32ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2997 IncrementalHoareTripleChecker+Unchecked, 2683.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:36,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 0 Invalid, 6536 Unknown, 0 Unchecked, 22.32ms Time], IncrementalHoareTripleChecker [57 Valid, 3482 Invalid, 0 Unknown, 2997 Unchecked, 2683.44ms Time] [2021-11-12 22:22:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2021-11-12 22:22:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 823. [2021-11-12 22:22:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 821 states have (on average 2.322777101096224) internal successors, (1907), 822 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1907 transitions. [2021-11-12 22:22:37,024 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1907 transitions. Word has length 36 [2021-11-12 22:22:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:37,025 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1907 transitions. [2021-11-12 22:22:37,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1907 transitions. [2021-11-12 22:22:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:22:37,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:37,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:37,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:37,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-12 22:22:37,255 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:22:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:37,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1711100758, now seen corresponding path program 2 times [2021-11-12 22:22:37,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:22:37,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752934897] [2021-11-12 22:22:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:37,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:22:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:38,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:22:38,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752934897] [2021-11-12 22:22:38,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752934897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:22:38,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071845042] [2021-11-12 22:22:38,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:22:38,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:22:38,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:22:38,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:22:38,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:22:38,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-12 22:22:38,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:22:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-12 22:22:38,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:38,442 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:22:38,443 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 152 treesize of output 148 [2021-11-12 22:22:38,752 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 18 treesize of output 14 [2021-11-12 22:22:39,048 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:22:39,049 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 1 case distinctions, treesize of input 36 treesize of output 31 [2021-11-12 22:22:39,132 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:22:39,132 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 30 treesize of output 25 [2021-11-12 22:22:39,498 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-12 22:22:39,498 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 70 treesize of output 41 [2021-11-12 22:22:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:44,392 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int)) (not (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296))))))) is different from false [2021-11-12 22:23:43,929 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_push_#t~ret38#1_123| Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_100| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| c_~top~0) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= (+ (* 4294967296 (div .cse0 4294967296)) 4294967294) .cse0))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| |c_~#arr~0.offset|))) is different from false [2021-11-12 22:23:45,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_push_#t~ret38#1_123| Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_100| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| (+ |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 1)))) is different from false [2021-11-12 22:23:47,818 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_push_#t~ret38#1_123| Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_100| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| |c_~#arr~0.offset|))) is different from false [2021-11-12 22:23:47,819 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:23:47,839 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 623 treesize of output 591 [2021-11-12 22:23:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-12 22:23:49,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071845042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:23:49,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362693119] [2021-11-12 22:23:49,307 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:610) 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) [2021-11-12 22:23:49,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:23:49,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 21] total 47 [2021-11-12 22:23:49,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367770693] [2021-11-12 22:23:49,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:23:49,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-12 22:23:49,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:23:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-12 22:23:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1795, Unknown=28, NotChecked=356, Total=2352 [2021-11-12 22:23:49,311 INFO L87 Difference]: Start difference. First operand 823 states and 1907 transitions. Second operand has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:23:51,303 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (= c_~top~0 0) (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (= |c_~#arr~0.offset| 0) (<= 0 |c_t1Thread1of1ForFork0_push_~x#1|) (<= 0 |c_t1Thread1of1ForFork0_push_#in~x#1|) (<= .cse0 4) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (<= |c_t1Thread1of1ForFork0_push_#in~x#1| 4) (<= |c_t1Thread1of1ForFork0_push_~x#1| 4) (= |c_t1Thread1of1ForFork0_push_~stack#1.offset| 0) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (forall ((|v_t1Thread1of1ForFork0_push_#t~ret38#1_123| Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_100| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))))) (= .cse1 (+ 4294967294 (* 4294967296 (div .cse1 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| (+ c_~top~0 1)) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| |c_~#arr~0.offset|))) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 0 .cse0))) is different from false [2021-11-12 22:23:53,109 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (= |c_~#arr~0.offset| 0) (<= .cse0 4) (forall ((|v_t1Thread1of1ForFork0_push_#t~ret38#1_123| Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_100| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse1 (select (select (let ((.cse2 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 4))))) (= .cse1 (+ 4294967294 (* 4294967296 (div .cse1 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| (+ |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 1)))) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse0) (= |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| 0))) is different from false [2021-11-12 22:23:54,836 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (forall ((|v_t1Thread1of1ForFork0_push_#t~ret38#1_123| Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_44| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_100| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| c_~top~0) (not (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_int| |c_~#arr~0.base| (store (select |c_#memory_int| |c_~#arr~0.base|) (+ |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_123| 4)) |t1Thread1of1ForFork0_push_~x#1|)))) (store .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_44|))) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= (+ (* 4294967296 (div .cse0 4294967296)) 4294967294) .cse0))) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_100| |c_~#arr~0.offset|))) (= |c_~#arr~0.offset| 0) (<= .cse2 4) (<= c_~top~0 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (<= 0 .cse2) (<= 4 (* 4 c_~top~0)))) is different from false [2021-11-12 22:23:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:56,860 INFO L93 Difference]: Finished difference Result 1149 states and 2581 transitions. [2021-11-12 22:23:56,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 22:23:56,861 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 states have internal predecessors, (82), 0 states have call successors, (0), 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 36 [2021-11-12 22:23:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:56,868 INFO L225 Difference]: With dead ends: 1149 [2021-11-12 22:23:56,869 INFO L226 Difference]: Without dead ends: 1072 [2021-11-12 22:23:56,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 75.0s TimeCoverageRelationStatistics Valid=277, Invalid=2690, Unknown=31, NotChecked=784, Total=3782 [2021-11-12 22:23:56,871 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1841.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 684 IncrementalHoareTripleChecker+Unchecked, 2137.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:56,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 3989 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [27 Valid, 3278 Invalid, 0 Unknown, 684 Unchecked, 2137.16ms Time] [2021-11-12 22:23:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-12 22:23:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 890. [2021-11-12 22:23:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 888 states have (on average 2.3074324324324325) internal successors, (2049), 889 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:23:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 2049 transitions. [2021-11-12 22:23:56,901 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 2049 transitions. Word has length 36 [2021-11-12 22:23:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:56,902 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 2049 transitions. [2021-11-12 22:23:56,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 48 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:23:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 2049 transitions. [2021-11-12 22:23:56,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:23:56,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:56,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:23:56,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:57,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:23:57,119 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:23:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash 161353818, now seen corresponding path program 3 times [2021-11-12 22:23:57,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:23:57,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618082555] [2021-11-12 22:23:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:57,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:23:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:23:58,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:23:58,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618082555] [2021-11-12 22:23:58,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618082555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:23:58,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650830459] [2021-11-12 22:23:58,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:23:58,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:23:58,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:23:58,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:23:58,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 22:23:58,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:23:58,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:23:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-12 22:23:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:58,232 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:23:58,233 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 746 treesize of output 726 [2021-11-12 22:23:58,763 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 64 treesize of output 60 [2021-11-12 22:23:59,012 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:23:59,013 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 51 treesize of output 38 [2021-11-12 22:23:59,358 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:23:59,359 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 36 treesize of output 31 [2021-11-12 22:23:59,850 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-12 22:23:59,850 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 70 treesize of output 41 [2021-11-12 22:23:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:23:59,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:19,218 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_push_~stack#1.offset_105| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_132| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse0 (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| 4) |v_t1Thread1of1ForFork0_push_~stack#1.offset_105|) |t1Thread1of1ForFork0_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse0 (+ 4294967294 (* 4294967296 (div .cse0 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_105| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|))) is different from false [2021-11-12 22:25:00,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 294 [2021-11-12 22:25:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 22:25:03,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650830459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:25:03,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757333281] [2021-11-12 22:25:03,276 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$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:610) 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) [2021-11-12 22:25:03,276 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:25:03,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 52 [2021-11-12 22:25:03,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980902585] [2021-11-12 22:25:03,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:25:03,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-12 22:25:03,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:25:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-12 22:25:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2530, Unknown=28, NotChecked=102, Total=2862 [2021-11-12 22:25:03,279 INFO L87 Difference]: Start difference. First operand 890 states and 2049 transitions. Second operand has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:25:05,288 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) 0)) (.cse2 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (<= 0 .cse0) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (= |c_~#arr~0.offset| 0) (forall ((|v_t1Thread1of1ForFork0_push_~stack#1.offset_105| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_132| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse1 (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| 4) |v_t1Thread1of1ForFork0_push_~stack#1.offset_105|) |t1Thread1of1ForFork0_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse1 (+ 4294967294 (* 4294967296 (div .cse1 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_105| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|))) (<= .cse0 4) (<= .cse2 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (<= c_~top~0 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 0 .cse2) (<= 4 (* 4 c_~top~0)) (not (= |c_t1Thread1of1ForFork0_push_#in~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_#in~x#1| 4294967296))))))) is different from false [2021-11-12 22:25:48,808 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) 0))) (and (<= 0 .cse0) (= |c_~#arr~0.offset| 0) (forall ((|v_t1Thread1of1ForFork0_push_~stack#1.offset_105| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_132| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse1 (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| 4) |v_t1Thread1of1ForFork0_push_~stack#1.offset_105|) |t1Thread1of1ForFork0_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse1 (+ 4294967294 (* 4294967296 (div .cse1 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_105| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|))) (<= .cse0 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (<= c_~top~0 1) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 4 (* 4 c_~top~0)))) is different from false [2021-11-12 22:25:50,058 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) 0)) (.cse3 (select |c_#memory_int| |c_t2Thread1of1ForFork1_pop_~stack#1.base|))) (and (<= 0 .cse0) (= |c_~#arr~0.offset| 0) (forall ((|v_t1Thread1of1ForFork0_push_~stack#1.offset_105| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_132| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse1 (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| 4) |v_t1Thread1of1ForFork0_push_~stack#1.offset_105|) |t1Thread1of1ForFork0_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse1 (+ 4294967294 (* 4294967296 (div .cse1 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_105| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|))) (<= .cse0 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (not (let ((.cse2 (select .cse3 (+ (* |c_t2Thread1of1ForFork1_get_top_#res#1| 4) |c_t2Thread1of1ForFork1_pop_~stack#1.offset|)))) (= (+ 4294967294 (* 4294967296 (div .cse2 4294967296))) .cse2))) (<= c_~top~0 1) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (not (let ((.cse4 (select .cse3 (+ (* c_~top~0 4) |c_t2Thread1of1ForFork1_pop_~stack#1.offset|)))) (= (+ (* 4294967296 (div .cse4 4294967296)) 4294967294) .cse4))) (<= 4 (* 4 c_~top~0)))) is different from false [2021-11-12 22:25:51,085 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) 0)) (.cse1 (select (select |c_#memory_int| |c_t2Thread1of1ForFork1_pop_~stack#1.base|) 0)) (.cse3 (select (select |c_#memory_int| |c_~#arr~0.base|) 0))) (and (<= 0 .cse0) (<= 1 c_~top~0) (<= 0 |c_t2Thread1of1ForFork1_get_top_#res#1|) (= |c_~#arr~0.offset| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) (<= .cse1 4) (= |c_~#arr~0.offset| 0) (forall ((|v_t1Thread1of1ForFork0_push_~stack#1.offset_105| Int) (|v_t1Thread1of1ForFork0_push_#t~ret38#1_132| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (not (let ((.cse2 (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ (* |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| 4) |v_t1Thread1of1ForFork0_push_~stack#1.offset_105|) |t1Thread1of1ForFork0_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4) (- 4))))) (= .cse2 (+ 4294967294 (* 4294967296 (div .cse2 4294967296)))))) (< |v_t1Thread1of1ForFork0_push_#t~ret38#1_132| c_~top~0) (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_105| |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|))) (<= .cse0 4) (<= .cse3 4) (not (= |c_~#m~0.base| |c_~#arr~0.base|)) (= |c_t2Thread1of1ForFork1_pop_~stack#1.offset| 0) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (<= |c_t2Thread1of1ForFork1_get_top_#res#1| 0) (<= c_~top~0 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| |c_~#arr~0.base|)) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 0 .cse1) (<= 0 .cse3) (<= 4 (* 4 c_~top~0)) (not (= |c_t1Thread1of1ForFork0_push_#in~x#1| (+ 4294967294 (* 4294967296 (div |c_t1Thread1of1ForFork0_push_#in~x#1| 4294967296))))))) is different from false [2021-11-12 22:25:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:52,315 INFO L93 Difference]: Finished difference Result 1968 states and 4437 transitions. [2021-11-12 22:25:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-12 22:25:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 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 36 [2021-11-12 22:25:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:52,326 INFO L225 Difference]: With dead ends: 1968 [2021-11-12 22:25:52,326 INFO L226 Difference]: Without dead ends: 1968 [2021-11-12 22:25:52,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 98 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2530 ImplicationChecksByTransitivity, 110.3s TimeCoverageRelationStatistics Valid=805, Invalid=8093, Unknown=52, NotChecked=950, Total=9900 [2021-11-12 22:25:52,330 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 423 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2499.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.36ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2069 IncrementalHoareTripleChecker+Unchecked, 2838.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:52,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 0 Invalid, 5960 Unknown, 0 Unchecked, 12.36ms Time], IncrementalHoareTripleChecker [101 Valid, 3790 Invalid, 0 Unknown, 2069 Unchecked, 2838.81ms Time] [2021-11-12 22:25:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-11-12 22:25:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1365. [2021-11-12 22:25:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1363 states have (on average 2.4196625091709465) internal successors, (3298), 1364 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:25:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 3298 transitions. [2021-11-12 22:25:52,380 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 3298 transitions. Word has length 36 [2021-11-12 22:25:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:52,381 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 3298 transitions. [2021-11-12 22:25:52,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 53 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:25:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 3298 transitions. [2021-11-12 22:25:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:25:52,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:52,384 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:52,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:52,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-12 22:25:52,595 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:25:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1111351928, now seen corresponding path program 4 times [2021-11-12 22:25:52,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:25:52,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032819929] [2021-11-12 22:25:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:52,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:25:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:53,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:25:53,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032819929] [2021-11-12 22:25:53,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032819929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:25:53,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429863831] [2021-11-12 22:25:53,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:25:53,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:25:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:25:53,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:25:53,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 22:25:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:53,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-12 22:25:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:53,642 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:25:53,642 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 127 treesize of output 123 [2021-11-12 22:25:54,031 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 18 treesize of output 14 [2021-11-12 22:25:54,112 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:25:54,112 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 30 treesize of output 25 [2021-11-12 22:25:54,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:25:54,293 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 23 [2021-11-12 22:25:54,684 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-12 22:25:54,684 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 70 treesize of output 41 [2021-11-12 22:25:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:54,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:50,092 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:26:50,128 INFO L354 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2021-11-12 22:26:50,129 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 117 treesize of output 87 [2021-11-12 22:26:50,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:26:50,137 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 81 [2021-11-12 22:26:50,167 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 10 treesize of output 4 [2021-11-12 22:26:50,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:26:50,193 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 83 treesize of output 80 [2021-11-12 22:26:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:26:52,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429863831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:26:52,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299082139] [2021-11-12 22:26:52,607 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:610) 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) [2021-11-12 22:26:52,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:26:52,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 22] total 48 [2021-11-12 22:26:52,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113275025] [2021-11-12 22:26:52,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:26:52,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-12 22:26:52,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:26:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-12 22:26:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2116, Unknown=25, NotChecked=0, Total=2450 [2021-11-12 22:26:52,611 INFO L87 Difference]: Start difference. First operand 1365 states and 3298 transitions. Second operand has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:26:55,175 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) 0)) (.cse1 (select (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork0_push_~stack#1.offset| (* |c_t1Thread1of1ForFork0_push_#t~ret38#1| 4)) |c_t1Thread1of1ForFork0_push_~x#1|) 0))) (and (<= 0 .cse0) (<= 1 c_~top~0) (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (= |c_~#arr~0.offset| 0) (<= .cse0 4) (<= 0 .cse1) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.offset| 0) (forall ((v_~top~0_227 Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_46| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (<= v_~top~0_227 0) (not (let ((.cse2 (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4)) |t1Thread1of1ForFork0_push_~x#1|) (+ |c_~#arr~0.offset| (* v_~top~0_227 4) (- 4))))) (= .cse2 (+ 4294967294 (* 4294967296 (div .cse2 4294967296)))))) (< c_~top~0 v_~top~0_227))) (<= c_~top~0 1) (= |c_t1Thread1of1ForFork0_push_#in~stack#1.base| |c_~#arr~0.base|) (<= 4 (* 4 c_~top~0)) (<= .cse1 4))) is different from false [2021-11-12 22:27:30,476 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 64 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:27:49,939 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_~#arr~0.base|) 0)) (.cse0 (select (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_~stack#1.base|) (+ |c_t1Thread1of1ForFork0_push_~stack#1.offset| (* |c_t1Thread1of1ForFork0_push_#t~ret38#1| 4)) |c_t1Thread1of1ForFork0_push_~x#1|) 0))) (and (<= 1 c_~top~0) (= |c_t1Thread1of1ForFork0_push_~stack#1.base| |c_~#arr~0.base|) (= |c_~#arr~0.offset| 0) (<= 0 .cse0) (<= .cse1 4) (forall ((v_~top~0_227 Int) (|ULTIMATE.start_main_~#id2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre52#1_46| Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (<= v_~top~0_227 0) (not (let ((.cse2 (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_46|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4)) |t1Thread1of1ForFork0_push_~x#1|) (+ |c_~#arr~0.offset| (* v_~top~0_227 4) (- 4))))) (= .cse2 (+ 4294967294 (* 4294967296 (div .cse2 4294967296)))))) (< c_~top~0 v_~top~0_227))) (<= c_~top~0 1) (<= 0 .cse1) (forall ((v_~top~0_227 Int) (|t1Thread1of1ForFork0_push_~x#1| Int)) (or (<= v_~top~0_227 0) (not (let ((.cse3 (select (select (store |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_push_#in~stack#1.base|) (+ (* c_~top~0 4) |c_t1Thread1of1ForFork0_push_#in~stack#1.offset|) |t1Thread1of1ForFork0_push_~x#1|)) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* v_~top~0_227 4) (- 4))))) (= (+ (* 4294967296 (div .cse3 4294967296)) 4294967294) .cse3))) (< c_~top~0 v_~top~0_227))) (<= 4 (* 4 c_~top~0)) (<= .cse0 4))) is different from false [2021-11-12 22:28:10,197 WARN L227 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:29:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:29:41,061 INFO L93 Difference]: Finished difference Result 2699 states and 6241 transitions. [2021-11-12 22:29:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-12 22:29:41,062 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 0 states have call successors, (0), 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 36 [2021-11-12 22:29:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:29:41,074 INFO L225 Difference]: With dead ends: 2699 [2021-11-12 22:29:41,074 INFO L226 Difference]: Without dead ends: 2622 [2021-11-12 22:29:41,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 47 SyntacticMatches, 14 SemanticMatches, 98 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2771 ImplicationChecksByTransitivity, 224.3s TimeCoverageRelationStatistics Valid=1153, Invalid=8272, Unknown=89, NotChecked=386, Total=9900 [2021-11-12 22:29:41,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 467 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1790.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.79ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1274 IncrementalHoareTripleChecker+Unchecked, 2090.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:29:41,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 0 Invalid, 4245 Unknown, 0 Unchecked, 10.79ms Time], IncrementalHoareTripleChecker [52 Valid, 2919 Invalid, 0 Unknown, 1274 Unchecked, 2090.49ms Time] [2021-11-12 22:29:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-11-12 22:29:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1860. [2021-11-12 22:29:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1858 states have (on average 2.4095801937567276) internal successors, (4477), 1859 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 4477 transitions. [2021-11-12 22:29:41,139 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 4477 transitions. Word has length 36 [2021-11-12 22:29:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:29:41,139 INFO L470 AbstractCegarLoop]: Abstraction has 1860 states and 4477 transitions. [2021-11-12 22:29:41,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:29:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 4477 transitions. [2021-11-12 22:29:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:29:41,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:29:41,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:29:41,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:29:41,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-12 22:29:41,367 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:29:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:29:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1467726280, now seen corresponding path program 5 times [2021-11-12 22:29:41,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:29:41,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148441469] [2021-11-12 22:29:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:29:41,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:29:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:29:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:42,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:29:42,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148441469] [2021-11-12 22:29:42,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148441469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:29:42,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626633319] [2021-11-12 22:29:42,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:29:42,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:29:42,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:29:42,186 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:29:42,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:29:42,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-12 22:29:42,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:29:42,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-12 22:29:42,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:29:42,338 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 22:29:42,339 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 1045 treesize of output 1031 [2021-11-12 22:29:42,764 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 18 treesize of output 14 [2021-11-12 22:29:42,803 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:29:42,803 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 30 treesize of output 25 [2021-11-12 22:29:43,086 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-12 22:29:43,086 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 36 treesize of output 31 [2021-11-12 22:29:43,416 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-12 22:29:43,416 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 70 treesize of output 41 [2021-11-12 22:29:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:29:43,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:16,667 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-12 22:30:16,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-12 22:30:16,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758612466] [2021-11-12 22:30:16,668 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:610) 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) [2021-11-12 22:30:16,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:30:16,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-12 22:30:16,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361952429] [2021-11-12 22:30:16,668 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-12 22:30:16,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-12 22:30:16,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:30:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-12 22:30:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1142, Unknown=11, NotChecked=0, Total=1260 [2021-11-12 22:30:16,670 INFO L87 Difference]: Start difference. First operand 1860 states and 4477 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 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) [2021-11-12 22:30:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:30:16,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=107, Invalid=1142, Unknown=11, NotChecked=0, Total=1260 [2021-11-12 22:30:16,671 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:16,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.00ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:30:16,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-12 22:30:16,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:16,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-12 22:30:16,873 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.modelcheckerutils.smt.MonolithicImplicationChecker@5240ae85 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:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$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:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) 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) [2021-11-12 22:30:16,874 INFO L158 Benchmark]: Toolchain (without parser) took 563994.36ms. Allocated memory was 109.1MB in the beginning and 207.6MB in the end (delta: 98.6MB). Free memory was 74.5MB in the beginning and 55.1MB in the end (delta: 19.4MB). Peak memory consumption was 118.3MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,874 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:30:16,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.89ms. Allocated memory is still 109.1MB. Free memory was 74.5MB in the beginning and 63.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.78ms. Allocated memory is still 109.1MB. Free memory was 63.2MB in the beginning and 60.5MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:30:16,875 INFO L158 Benchmark]: Boogie Preprocessor took 36.52ms. Allocated memory is still 109.1MB. Free memory was 60.5MB in the beginning and 58.8MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,875 INFO L158 Benchmark]: RCFGBuilder took 616.62ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 58.8MB in the beginning and 104.6MB in the end (delta: -45.8MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,876 INFO L158 Benchmark]: TraceAbstraction took 562534.22ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 104.6MB in the beginning and 55.1MB in the end (delta: 49.5MB). Peak memory consumption was 119.8MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.89ms. Allocated memory is still 109.1MB. Free memory was 74.5MB in the beginning and 63.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.78ms. Allocated memory is still 109.1MB. Free memory was 63.2MB in the beginning and 60.5MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.52ms. Allocated memory is still 109.1MB. Free memory was 60.5MB in the beginning and 58.8MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 616.62ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 58.8MB in the beginning and 104.6MB in the end (delta: -45.8MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 562534.22ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 104.6MB in the beginning and 55.1MB in the end (delta: 49.5MB). Peak memory consumption was 119.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.8s, 171 PlacesBefore, 38 PlacesAfterwards, 174 TransitionsBefore, 36 TransitionsAfterwards, 8324 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 5 ChoiceCompositions, 168 TotalNumberOfCompositions, 11187 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8930, positive: 8747, positive conditional: 0, positive unconditional: 8747, negative: 183, negative conditional: 0, negative unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6153, positive: 6078, positive conditional: 0, positive unconditional: 6078, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6153, positive: 6061, positive conditional: 0, positive unconditional: 6061, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 92, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 195, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8930, positive: 2669, positive conditional: 0, positive unconditional: 2669, negative: 108, negative conditional: 0, negative unconditional: 108, unknown: 6153, unknown conditional: 0, unknown unconditional: 6153] , Statistics on independence cache: Total cache size (in pairs): 304, Positive cache size: 280, Positive conditional cache size: 0, Positive unconditional cache size: 280, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24 - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5240ae85 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@5240ae85: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:30:19,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:30:19,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:30:19,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:30:19,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:30:19,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:30:19,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:30:19,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:30:19,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:30:19,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:30:19,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:30:19,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:30:19,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:30:19,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:30:19,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:30:19,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:30:19,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:30:19,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:30:19,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:30:19,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:30:19,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:30:19,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:30:19,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:30:19,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:30:19,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:30:19,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:30:19,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:30:19,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:30:19,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:30:19,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:30:19,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:30:19,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:30:19,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:30:19,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:30:19,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:30:19,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:30:19,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:30:19,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:30:19,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:30:19,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:30:19,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:30:19,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:30:19,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:30:19,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:30:19,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:30:19,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:30:19,262 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:30:19,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:30:19,263 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:30:19,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:30:19,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:30:19,264 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:30:19,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:30:19,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:30:19,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:30:19,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:30:19,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:30:19,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:30:19,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:30:19,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:30:19,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:30:19,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:30:19,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:30:19,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:30:19,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:30:19,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:30:19,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:30:19,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:30:19,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:30:19,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:19,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:30:19,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:30:19,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:30:19,271 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:30:19,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:30:19,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:30:19,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:30:19,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:30:19,273 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_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2021-11-12 22:30:19,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:30:19,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:30:19,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:30:19,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:30:19,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:30:19,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread/stack-1.i [2021-11-12 22:30:19,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/76658b16b/886eeb06c54840708b8b4c1237284e12/FLAG0b663554c [2021-11-12 22:30:20,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:30:20,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/sv-benchmarks/c/pthread/stack-1.i [2021-11-12 22:30:20,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/76658b16b/886eeb06c54840708b8b4c1237284e12/FLAG0b663554c [2021-11-12 22:30:20,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/data/76658b16b/886eeb06c54840708b8b4c1237284e12 [2021-11-12 22:30:20,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:30:20,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:30:20,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:20,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:30:20,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:30:20,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:20" (1/1) ... [2021-11-12 22:30:20,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df9fda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:20, skipping insertion in model container [2021-11-12 22:30:20,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:20" (1/1) ... [2021-11-12 22:30:20,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:30:20,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:30:21,244 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-11-12 22:30:21,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:21,283 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:30:21,343 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2021-11-12 22:30:21,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:21,463 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:30:21,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21 WrapperNode [2021-11-12 22:30:21,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:21,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:21,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:30:21,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:30:21,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:21,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:30:21,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:30:21,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:30:21,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:30:21,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:30:21,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:30:21,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:30:21,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:21,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:30:21,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:30:21,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:30:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:30:21,751 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-12 22:30:21,751 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-12 22:30:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-12 22:30:21,752 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-12 22:30:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:30:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:30:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:30:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:30:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:30:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-12 22:30:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:30:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:30:21,757 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 22:30:22,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:30:22,340 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:30:22,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:22 BoogieIcfgContainer [2021-11-12 22:30:22,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:30:22,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:30:22,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:30:22,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:30:22,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:30:20" (1/3) ... [2021-11-12 22:30:22,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fb731e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:22, skipping insertion in model container [2021-11-12 22:30:22,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (2/3) ... [2021-11-12 22:30:22,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fb731e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:22, skipping insertion in model container [2021-11-12 22:30:22,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:22" (3/3) ... [2021-11-12 22:30:22,351 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2021-11-12 22:30:22,355 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 22:30:22,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:30:22,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 22:30:22,362 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 22:30:22,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,432 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,433 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,433 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,433 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,434 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,435 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,435 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,436 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,437 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,437 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,437 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,437 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,438 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,439 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,440 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,440 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,441 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,442 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,443 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,443 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,443 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,444 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,444 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,444 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,444 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,445 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,445 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,445 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,446 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,446 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,446 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,446 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,446 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,447 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,447 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,448 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,449 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,450 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,451 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,452 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,454 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,455 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,456 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,457 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,457 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,457 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,458 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,458 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,459 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,459 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,462 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,462 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,463 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,464 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,464 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,465 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,465 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,465 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,465 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,471 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,473 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,473 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,473 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,474 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,475 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,475 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,475 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,475 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,476 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,476 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,476 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,476 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,477 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,477 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,479 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,479 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,479 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,479 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,479 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,480 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,480 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,480 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,480 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,481 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,481 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,481 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,481 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,481 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,482 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,482 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,486 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,487 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,488 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,488 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,488 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,488 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,488 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,489 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,489 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,489 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,489 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,490 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,490 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,490 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,491 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,491 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,491 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,492 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,492 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,494 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,494 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,494 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,495 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,495 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,495 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,495 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,496 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,497 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,498 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,499 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,500 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,500 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,500 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,501 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,501 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,501 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,501 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,502 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,502 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,502 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,502 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,503 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,504 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,504 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,504 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,505 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,505 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,505 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,505 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,505 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,506 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,506 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,506 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,507 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,507 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,507 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,508 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,512 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,513 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,514 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,515 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,515 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,516 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,516 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,516 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,516 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,517 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,517 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,517 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,517 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,517 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,517 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,518 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,518 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,518 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,518 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,519 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,519 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,525 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,526 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,526 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,526 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,526 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,527 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,527 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,527 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,527 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,527 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,528 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,528 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,528 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,529 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,529 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,529 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,529 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~tmp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,530 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,530 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,535 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,538 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,538 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,538 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,538 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,539 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,539 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,539 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,539 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:30:22,544 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-12 22:30:22,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:30:22,605 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 [2021-11-12 22:30:22,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-12 22:30:22,620 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 22:30:22,633 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 171 transitions, 358 flow [2021-11-12 22:30:22,636 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 171 transitions, 358 flow [2021-11-12 22:30:22,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 171 transitions, 358 flow [2021-11-12 22:30:22,723 INFO L129 PetriNetUnfolder]: 10/169 cut-off events. [2021-11-12 22:30:22,723 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-12 22:30:22,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 169 events. 10/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 396 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 122. Up to 3 conditions per place. [2021-11-12 22:30:22,741 INFO L116 LiptonReduction]: Number of co-enabled transitions 7812 [2021-11-12 22:30:40,277 INFO L131 LiptonReduction]: Checked pairs total: 11187 [2021-11-12 22:30:40,278 INFO L133 LiptonReduction]: Total number of compositions: 165 [2021-11-12 22:30:40,295 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 88 flow [2021-11-12 22:30:40,324 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:30:40,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:40,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:30:40,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:30:40,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash -894401157, now seen corresponding path program 1 times [2021-11-12 22:30:40,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:40,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576347457] [2021-11-12 22:30:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:40,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:40,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:40,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:40,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:30:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:40,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:40,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:40,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:40,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:40,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576347457] [2021-11-12 22:30:40,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576347457] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:40,636 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:40,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:30:40,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224210158] [2021-11-12 22:30:40,638 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:40,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:40,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:40,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:40,687 INFO L87 Difference]: Start difference. First operand has 282 states, 279 states have (on average 2.6917562724014337) internal successors, (751), 281 states have internal predecessors, (751), 0 states have call successors, (0), 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 2.75) internal successors, (11), 3 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) [2021-11-12 22:30:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:40,985 INFO L93 Difference]: Finished difference Result 574 states and 1498 transitions. [2021-11-12 22:30:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:40,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 6 [2021-11-12 22:30:40,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:41,018 INFO L225 Difference]: With dead ends: 574 [2021-11-12 22:30:41,018 INFO L226 Difference]: Without dead ends: 556 [2021-11-12 22:30:41,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:41,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 253.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:41,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 253.02ms Time] [2021-11-12 22:30:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-12 22:30:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 408. [2021-11-12 22:30:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 405 states have (on average 2.7728395061728395) internal successors, (1123), 407 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1123 transitions. [2021-11-12 22:30:41,135 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1123 transitions. Word has length 6 [2021-11-12 22:30:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:41,136 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1123 transitions. [2021-11-12 22:30:41,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2021-11-12 22:30:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1123 transitions. [2021-11-12 22:30:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:30:41,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:41,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:41,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:41,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:41,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:30:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -117292727, now seen corresponding path program 1 times [2021-11-12 22:30:41,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:41,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839893045] [2021-11-12 22:30:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:41,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:41,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:41,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:30:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:41,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:30:41,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:41,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:41,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:41,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839893045] [2021-11-12 22:30:41,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839893045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:41,566 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:41,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:30:41,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667269193] [2021-11-12 22:30:41,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:41,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:41,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:41,570 INFO L87 Difference]: Start difference. First operand 408 states and 1123 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-12 22:30:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:41,756 INFO L93 Difference]: Finished difference Result 458 states and 1257 transitions. [2021-11-12 22:30:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:30:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 10 [2021-11-12 22:30:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:41,761 INFO L225 Difference]: With dead ends: 458 [2021-11-12 22:30:41,762 INFO L226 Difference]: Without dead ends: 458 [2021-11-12 22:30:41,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:41,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:41,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 71 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 175.78ms Time] [2021-11-12 22:30:41,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-12 22:30:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-11-12 22:30:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 455 states have (on average 2.7626373626373626) internal successors, (1257), 457 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1257 transitions. [2021-11-12 22:30:41,786 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1257 transitions. Word has length 10 [2021-11-12 22:30:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:41,787 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1257 transitions. [2021-11-12 22:30:41,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-12 22:30:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1257 transitions. [2021-11-12 22:30:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:30:41,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:41,789 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:41,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:42,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:42,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:30:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1838199915, now seen corresponding path program 1 times [2021-11-12 22:30:42,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:42,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584781643] [2021-11-12 22:30:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:42,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:42,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:42,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:42,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:30:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:42,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:42,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:42,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584781643] [2021-11-12 22:30:42,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584781643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:30:42,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2127211940] [2021-11-12 22:30:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:42,302 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:30:42,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:30:42,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:30:42,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 22:30:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:42,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:42,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2127211940] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:30:42,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234189409] [2021-11-12 22:30:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:42,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:30:42,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:30:42,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:30:42,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 22:30:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:42,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:30:42,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:42,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234189409] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:30:42,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:30:42,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2021-11-12 22:30:42,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956777957] [2021-11-12 22:30:42,729 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:30:42,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:30:42,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:30:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:30:42,731 INFO L87 Difference]: Start difference. First operand 458 states and 1257 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2021-11-12 22:30:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:43,525 INFO L93 Difference]: Finished difference Result 1224 states and 3175 transitions. [2021-11-12 22:30:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:30:43,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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 13 [2021-11-12 22:30:43,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:43,538 INFO L225 Difference]: With dead ends: 1224 [2021-11-12 22:30:43,538 INFO L226 Difference]: Without dead ends: 1224 [2021-11-12 22:30:43,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:30:43,547 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 613.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 706.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:43,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 524 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [14 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 706.02ms Time] [2021-11-12 22:30:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-12 22:30:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 882. [2021-11-12 22:30:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 879 states have (on average 2.7781569965870307) internal successors, (2442), 881 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2442 transitions. [2021-11-12 22:30:43,616 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2442 transitions. Word has length 13 [2021-11-12 22:30:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:43,616 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 2442 transitions. [2021-11-12 22:30:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2021-11-12 22:30:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2442 transitions. [2021-11-12 22:30:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:30:43,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:43,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:43,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:43,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-12 22:30:44,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:44,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 22:30:44,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:30:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:44,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1750489243, now seen corresponding path program 1 times [2021-11-12 22:30:44,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:44,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272901274] [2021-11-12 22:30:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:44,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:44,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:44,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:44,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:30:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:44,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:44,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:44,379 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 [2021-11-12 22:30:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:44,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:44,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:44,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272901274] [2021-11-12 22:30:44,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272901274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:44,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:44,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:30:44,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419404899] [2021-11-12 22:30:44,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:44,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:30:44,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:30:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:30:44,449 INFO L87 Difference]: Start difference. First operand 882 states and 2442 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-11-12 22:30:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:44,605 INFO L93 Difference]: Finished difference Result 380 states and 881 transitions. [2021-11-12 22:30:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:30:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 22:30:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:44,609 INFO L225 Difference]: With dead ends: 380 [2021-11-12 22:30:44,609 INFO L226 Difference]: Without dead ends: 380 [2021-11-12 22:30:44,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:30:44,610 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:44,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 149.06ms Time] [2021-11-12 22:30:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-12 22:30:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 328. [2021-11-12 22:30:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 2.285276073619632) internal successors, (745), 327 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 745 transitions. [2021-11-12 22:30:44,624 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 745 transitions. Word has length 20 [2021-11-12 22:30:44,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:44,625 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 745 transitions. [2021-11-12 22:30:44,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-11-12 22:30:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 745 transitions. [2021-11-12 22:30:44,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:30:44,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:44,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:44,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:44,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:44,843 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:30:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2090741331, now seen corresponding path program 1 times [2021-11-12 22:30:44,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:44,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152939239] [2021-11-12 22:30:44,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:44,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:44,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:44,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:30:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:44,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 22:30:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:45,217 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 19 treesize of output 15 [2021-11-12 22:30:45,527 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 15 treesize of output 7 [2021-11-12 22:30:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:45,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:46,018 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 54 treesize of output 46 [2021-11-12 22:30:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:46,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:46,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152939239] [2021-11-12 22:30:46,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152939239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:46,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:46,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 24 [2021-11-12 22:30:46,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977966677] [2021-11-12 22:30:46,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:46,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-12 22:30:46,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-12 22:30:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:30:46,282 INFO L87 Difference]: Start difference. First operand 328 states and 745 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:53,834 INFO L93 Difference]: Finished difference Result 961 states and 2139 transitions. [2021-11-12 22:30:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-12 22:30:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2021-11-12 22:30:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:53,841 INFO L225 Difference]: With dead ends: 961 [2021-11-12 22:30:53,842 INFO L226 Difference]: Without dead ends: 900 [2021-11-12 22:30:53,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=581, Invalid=3709, Unknown=0, NotChecked=0, Total=4290 [2021-11-12 22:30:53,844 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 300 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3814.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.35ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4277.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:53,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 0 Invalid, 2770 Unknown, 0 Unchecked, 17.35ms Time], IncrementalHoareTripleChecker [77 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 4277.82ms Time] [2021-11-12 22:30:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-11-12 22:30:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 537. [2021-11-12 22:30:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 535 states have (on average 2.3570093457943924) internal successors, (1261), 536 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1261 transitions. [2021-11-12 22:30:53,867 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1261 transitions. Word has length 21 [2021-11-12 22:30:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:53,868 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 1261 transitions. [2021-11-12 22:30:53,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:30:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1261 transitions. [2021-11-12 22:30:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:30:53,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:53,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:53,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 22:30:54,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:54,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:30:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -51783191, now seen corresponding path program 2 times [2021-11-12 22:30:54,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:54,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472932895] [2021-11-12 22:30:54,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:30:54,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:54,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:54,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:54,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:30:54,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:30:54,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:30:54,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-12 22:30:54,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:54,259 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:30:54,260 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 185 treesize of output 179 [2021-11-12 22:30:54,719 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 19 treesize of output 15 [2021-11-12 22:30:54,786 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-12 22:30:54,786 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 27 treesize of output 26 [2021-11-12 22:30:55,099 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 15 treesize of output 7 [2021-11-12 22:30:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:55,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:12,333 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 118 treesize of output 110 [2021-11-12 22:31:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:14,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:14,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472932895] [2021-11-12 22:31:14,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472932895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:14,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:14,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 26 [2021-11-12 22:31:14,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544323044] [2021-11-12 22:31:14,100 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:14,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-12 22:31:14,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-12 22:31:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=668, Unknown=6, NotChecked=0, Total=756 [2021-11-12 22:31:14,101 INFO L87 Difference]: Start difference. First operand 537 states and 1261 transitions. Second operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:23,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:23,077 INFO L93 Difference]: Finished difference Result 1096 states and 2484 transitions. [2021-11-12 22:31:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-12 22:31:23,078 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2021-11-12 22:31:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:23,086 INFO L225 Difference]: With dead ends: 1096 [2021-11-12 22:31:23,086 INFO L226 Difference]: Without dead ends: 1014 [2021-11-12 22:31:23,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=370, Invalid=2174, Unknown=6, NotChecked=0, Total=2550 [2021-11-12 22:31:23,093 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 252 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3097.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.77ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 3480.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:23,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 0 Invalid, 2387 Unknown, 0 Unchecked, 10.77ms Time], IncrementalHoareTripleChecker [68 Valid, 2113 Invalid, 0 Unknown, 206 Unchecked, 3480.67ms Time] [2021-11-12 22:31:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-12 22:31:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 498. [2021-11-12 22:31:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 496 states have (on average 2.3608870967741935) internal successors, (1171), 497 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1171 transitions. [2021-11-12 22:31:23,119 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1171 transitions. Word has length 21 [2021-11-12 22:31:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:23,119 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1171 transitions. [2021-11-12 22:31:23,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1171 transitions. [2021-11-12 22:31:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:31:23,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:23,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:23,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:23,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:31:23,341 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:31:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 455833863, now seen corresponding path program 1 times [2021-11-12 22:31:23,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:31:23,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309214150] [2021-11-12 22:31:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:23,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:31:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:31:23,344 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:31:23,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:31:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:23,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:31:23,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:23,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:23,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:23,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309214150] [2021-11-12 22:31:23,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309214150] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:31:23,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [46892551] [2021-11-12 22:31:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:23,660 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:31:23,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:31:23,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:31:23,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 22:31:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:23,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:31:23,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:23,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:23,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [46892551] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:31:23,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482387310] [2021-11-12 22:31:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:23,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:31:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:31:23,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:31:23,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 22:31:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:24,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:31:24,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:24,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-12 22:31:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482387310] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:31:24,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-12 22:31:24,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6, 6, 6, 6] total 12 [2021-11-12 22:31:24,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352083394] [2021-11-12 22:31:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:24,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:31:24,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:31:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:31:24,142 INFO L87 Difference]: Start difference. First operand 498 states and 1171 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-12 22:31:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:24,338 INFO L93 Difference]: Finished difference Result 543 states and 1256 transitions. [2021-11-12 22:31:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:31:24,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 24 [2021-11-12 22:31:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:24,342 INFO L225 Difference]: With dead ends: 543 [2021-11-12 22:31:24,342 INFO L226 Difference]: Without dead ends: 543 [2021-11-12 22:31:24,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:31:24,343 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:24,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 190.41ms Time] [2021-11-12 22:31:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-12 22:31:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 456. [2021-11-12 22:31:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 454 states have (on average 2.33920704845815) internal successors, (1062), 455 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1062 transitions. [2021-11-12 22:31:24,367 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1062 transitions. Word has length 24 [2021-11-12 22:31:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:24,367 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1062 transitions. [2021-11-12 22:31:24,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-11-12 22:31:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1062 transitions. [2021-11-12 22:31:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:31:24,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:24,370 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-12 22:31:24,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:24,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-12 22:31:24,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:24,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:31:24,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:31:24,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1837507179, now seen corresponding path program 2 times [2021-11-12 22:31:24,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:31:24,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637878687] [2021-11-12 22:31:24,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:31:24,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:31:24,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:31:24,986 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:31:24,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:31:25,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:31:25,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:31:25,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:31:25,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:25,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:25,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:25,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637878687] [2021-11-12 22:31:25,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637878687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:31:25,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1113148038] [2021-11-12 22:31:25,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:31:25,405 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:31:25,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:31:25,410 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:31:25,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 22:31:25,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:31:25,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:31:25,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:31:25,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:25,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:25,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1113148038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:31:25,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298388621] [2021-11-12 22:31:25,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:31:25,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:31:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:31:25,874 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:31:25,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 22:31:25,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:31:25,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:31:25,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:31:25,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:26,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:31:26,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298388621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:31:26,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:31:26,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2021-11-12 22:31:26,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678832960] [2021-11-12 22:31:26,155 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:31:26,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:31:26,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:31:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:31:26,157 INFO L87 Difference]: Start difference. First operand 456 states and 1062 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:27,195 INFO L93 Difference]: Finished difference Result 1581 states and 3533 transitions. [2021-11-12 22:31:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-12 22:31:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 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 [2021-11-12 22:31:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:27,206 INFO L225 Difference]: With dead ends: 1581 [2021-11-12 22:31:27,207 INFO L226 Difference]: Without dead ends: 1581 [2021-11-12 22:31:27,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-11-12 22:31:27,208 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 402 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 714.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 820.76ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:27,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 0 Invalid, 817 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [15 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 820.76ms Time] [2021-11-12 22:31:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-11-12 22:31:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 962. [2021-11-12 22:31:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 960 states have (on average 2.365625) internal successors, (2271), 961 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2271 transitions. [2021-11-12 22:31:27,248 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2271 transitions. Word has length 27 [2021-11-12 22:31:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:27,248 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 2271 transitions. [2021-11-12 22:31:27,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:31:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2271 transitions. [2021-11-12 22:31:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 22:31:27,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:27,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:27,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:27,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:27,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 22:31:27,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:31:27,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:31:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1556731733, now seen corresponding path program 3 times [2021-11-12 22:31:27,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:31:27,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828389842] [2021-11-12 22:31:27,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:31:27,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:31:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:31:27,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:31:27,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:31:27,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 22:31:27,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:31:28,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 22:31:28,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:28,017 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:31:28,017 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 222 treesize of output 212 [2021-11-12 22:31:28,471 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 19 treesize of output 15 [2021-11-12 22:31:28,599 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-12 22:31:28,600 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 28 treesize of output 27 [2021-11-12 22:31:28,871 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 19 treesize of output 7 [2021-11-12 22:31:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:31:28,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:41,028 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~pre52#1_50| (_ BitVec 32)) (|ULTIMATE.start_main_~#id2~0#1.offset| (_ BitVec 32))) (not (= (bvadd (_ bv2 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_50|)) |c_~#arr~0.base|) (bvadd (bvmul |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| (_ bv4 32)) |c_~#arr~0.offset|))) (_ bv0 32)))) is different from false [2021-11-12 22:31:48,334 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 118 treesize of output 110 [2021-11-12 22:31:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-12 22:31:51,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:51,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828389842] [2021-11-12 22:31:51,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828389842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:31:51,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [15824487] [2021-11-12 22:31:51,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:31:51,282 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:31:51,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:31:51,283 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:31:51,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 22:31:51,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 22:31:51,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:31:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 22:31:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:51,539 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:31:51,539 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 158 treesize of output 154 [2021-11-12 22:31:51,873 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 19 treesize of output 15 [2021-11-12 22:31:51,940 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-12 22:31:51,940 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 28 treesize of output 27 [2021-11-12 22:31:52,039 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 19 treesize of output 7 [2021-11-12 22:31:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:31:52,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:53,789 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~pre52#1_51| (_ BitVec 32)) (|ULTIMATE.start_main_~#id2~0#1.offset| (_ BitVec 32))) (not (= (bvadd (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_51|)) |c_~#arr~0.base|) (bvadd (_ bv4294967292 32) (bvmul c_~top~0 (_ bv4 32)) |c_~#arr~0.offset|)) (_ bv2 32)) (_ bv0 32)))) is different from false [2021-11-12 22:31:55,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~pre52#1_51| (_ BitVec 32)) (|ULTIMATE.start_main_~#id2~0#1.offset| (_ BitVec 32))) (not (= (bvadd (_ bv2 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_51|)) |c_~#arr~0.base|) (bvadd (bvmul |c_t1Thread1of1ForFork0_inc_top_#t~post33#1| (_ bv4 32)) |c_~#arr~0.offset|))) (_ bv0 32)))) is different from false [2021-11-12 22:32:03,863 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 118 treesize of output 110 [2021-11-12 22:32:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-12 22:32:04,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [15824487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134686870] [2021-11-12 22:32:04,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:32:04,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:32:04,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:04,025 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:32:04,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-12 22:32:04,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 22:32:04,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:32:04,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-12 22:32:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:04,154 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 2327 treesize of output 2199 [2021-11-12 22:32:04,474 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 19 treesize of output 15 [2021-11-12 22:32:04,547 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-11-12 22:32:04,547 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 28 treesize of output 27 [2021-11-12 22:32:04,665 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 19 treesize of output 7 [2021-11-12 22:32:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:32:04,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:12,899 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 118 treesize of output 110 [2021-11-12 22:32:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-12 22:32:13,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134686870] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:13,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:32:13,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 28 [2021-11-12 22:32:13,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078318820] [2021-11-12 22:32:13,075 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:32:13,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-12 22:32:13,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:13,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-12 22:32:13,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=616, Unknown=9, NotChecked=156, Total=870 [2021-11-12 22:32:13,076 INFO L87 Difference]: Start difference. First operand 962 states and 2271 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:18,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:25,499 INFO L93 Difference]: Finished difference Result 1176 states and 2743 transitions. [2021-11-12 22:32:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-12 22:32:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-12 22:32:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:25,508 INFO L225 Difference]: With dead ends: 1176 [2021-11-12 22:32:25,508 INFO L226 Difference]: Without dead ends: 1176 [2021-11-12 22:32:25,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=351, Invalid=1632, Unknown=9, NotChecked=264, Total=2256 [2021-11-12 22:32:25,510 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4727.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.55ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 459 IncrementalHoareTripleChecker+Unchecked, 5046.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:25,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 0 Invalid, 2041 Unknown, 0 Unchecked, 10.55ms Time], IncrementalHoareTripleChecker [52 Valid, 1529 Invalid, 1 Unknown, 459 Unchecked, 5046.06ms Time] [2021-11-12 22:32:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2021-11-12 22:32:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 772. [2021-11-12 22:32:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 770 states have (on average 2.2857142857142856) internal successors, (1760), 771 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1760 transitions. [2021-11-12 22:32:25,538 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1760 transitions. Word has length 28 [2021-11-12 22:32:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:25,539 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1760 transitions. [2021-11-12 22:32:25,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1760 transitions. [2021-11-12 22:32:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 22:32:25,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:25,541 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:25,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:25,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:25,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:26,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 22:32:26,155 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:32:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1352724699, now seen corresponding path program 1 times [2021-11-12 22:32:26,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:26,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243796152] [2021-11-12 22:32:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:26,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:26,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:26,157 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:26,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:32:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:26,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:32:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:32:26,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:32:26,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:32:26,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243796152] [2021-11-12 22:32:26,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243796152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:26,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [929273088] [2021-11-12 22:32:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:26,464 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:32:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:32:26,465 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:32:26,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 22:32:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:32:26,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:32:26,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:32:26,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [929273088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:26,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864183991] [2021-11-12 22:32:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:26,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:32:26,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:26,730 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:32:26,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 22:32:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:26,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:32:26,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:32:26,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:32:26,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864183991] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:26,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:32:26,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 13 [2021-11-12 22:32:26,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778509485] [2021-11-12 22:32:26,972 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:32:26,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:32:26,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:32:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:32:26,973 INFO L87 Difference]: Start difference. First operand 772 states and 1760 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:27,997 INFO L93 Difference]: Finished difference Result 1188 states and 2611 transitions. [2021-11-12 22:32:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 22:32:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2021-11-12 22:32:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:28,019 INFO L225 Difference]: With dead ends: 1188 [2021-11-12 22:32:28,019 INFO L226 Difference]: Without dead ends: 1188 [2021-11-12 22:32:28,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-11-12 22:32:28,021 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 733.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 838.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:28,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 897 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [20 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 838.78ms Time] [2021-11-12 22:32:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-11-12 22:32:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 866. [2021-11-12 22:32:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 864 states have (on average 2.2858796296296298) internal successors, (1975), 865 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1975 transitions. [2021-11-12 22:32:28,063 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1975 transitions. Word has length 31 [2021-11-12 22:32:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:28,064 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1975 transitions. [2021-11-12 22:32:28,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1975 transitions. [2021-11-12 22:32:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:32:28,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:28,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:28,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:28,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:28,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:28,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:32:28,683 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:32:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 14975005, now seen corresponding path program 1 times [2021-11-12 22:32:28,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:28,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122598719] [2021-11-12 22:32:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:28,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:28,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:28,685 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:28,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:32:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:28,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-12 22:32:28,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:28,958 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 19 treesize of output 15 [2021-11-12 22:32:29,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:29,200 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 [2021-11-12 22:32:29,633 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 15 treesize of output 7 [2021-11-12 22:32:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:29,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:31,099 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 54 treesize of output 46 [2021-11-12 22:32:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:31,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:32:31,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122598719] [2021-11-12 22:32:31,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122598719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:31,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1054029020] [2021-11-12 22:32:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:31,389 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:32:31,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:32:31,390 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:32:31,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 22:32:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:31,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-12 22:32:31,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:31,733 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 19 treesize of output 15 [2021-11-12 22:32:31,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:31,855 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 [2021-11-12 22:32:32,020 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 15 treesize of output 7 [2021-11-12 22:32:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:32,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:32,245 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 54 treesize of output 46 [2021-11-12 22:32:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:32,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1054029020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:32,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928148144] [2021-11-12 22:32:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:32,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:32:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:32:32,309 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:32:32,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 22:32:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:32:32,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-12 22:32:32,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:32,519 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 19 treesize of output 15 [2021-11-12 22:32:32,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:32,625 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 [2021-11-12 22:32:32,819 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 15 treesize of output 7 [2021-11-12 22:32:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:32,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:32:33,058 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 54 treesize of output 46 [2021-11-12 22:32:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:32:33,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928148144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:32:33,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:32:33,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 36 [2021-11-12 22:32:33,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987267460] [2021-11-12 22:32:33,136 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:32:33,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-12 22:32:33,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:32:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-12 22:32:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-11-12 22:32:33,138 INFO L87 Difference]: Start difference. First operand 866 states and 1975 transitions. Second operand has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 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) [2021-11-12 22:32:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:57,553 INFO L93 Difference]: Finished difference Result 2988 states and 6592 transitions. [2021-11-12 22:32:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-12 22:32:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 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 36 [2021-11-12 22:32:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:57,570 INFO L225 Difference]: With dead ends: 2988 [2021-11-12 22:32:57,571 INFO L226 Difference]: Without dead ends: 2908 [2021-11-12 22:32:57,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 183 SyntacticMatches, 33 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3788 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=1044, Invalid=8856, Unknown=0, NotChecked=0, Total=9900 [2021-11-12 22:32:57,574 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 476 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 3532 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5268.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.01ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 5879.98ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:57,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 0 Invalid, 4025 Unknown, 0 Unchecked, 14.01ms Time], IncrementalHoareTripleChecker [112 Valid, 3532 Invalid, 0 Unknown, 381 Unchecked, 5879.98ms Time] [2021-11-12 22:32:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2021-11-12 22:32:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1764. [2021-11-12 22:32:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1762 states have (on average 2.4296254256526675) internal successors, (4281), 1763 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:32:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 4281 transitions. [2021-11-12 22:32:57,648 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 4281 transitions. Word has length 36 [2021-11-12 22:32:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:57,649 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 4281 transitions. [2021-11-12 22:32:57,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 37 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) [2021-11-12 22:32:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 4281 transitions. [2021-11-12 22:32:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:32:57,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:57,652 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:57,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:57,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:58,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:58,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:32:58,271 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:32:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:58,271 INFO L85 PathProgramCache]: Analyzing trace with hash 468022727, now seen corresponding path program 2 times [2021-11-12 22:32:58,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:58,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798792907] [2021-11-12 22:32:58,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:32:58,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:58,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:58,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 22:32:58,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:32:58,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:32:58,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-12 22:32:58,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:32:58,544 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 22:32:58,545 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 2820 treesize of output 2674 [2021-11-12 22:32:59,381 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 19 treesize of output 15 [2021-11-12 22:32:59,424 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-12 22:32:59,424 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 27 treesize of output 26 [2021-11-12 22:32:59,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:32:59,664 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 [2021-11-12 22:33:00,006 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 15 treesize of output 7 [2021-11-12 22:33:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:00,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:03,457 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~pre52#1_56| (_ BitVec 32)) (|ULTIMATE.start_main_~#id2~0#1.offset| (_ BitVec 32))) (not (= (bvadd (_ bv2 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base|) |ULTIMATE.start_main_~#id2~0#1.offset| |v_ULTIMATE.start_main_#t~pre52#1_56|)) |c_~#arr~0.base|) (bvadd (bvmul c_~top~0 (_ bv4 32)) |c_~#arr~0.offset|))) (_ bv0 32)))) is different from false [2021-11-12 22:33:03,463 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 118 treesize of output 110 [2021-11-12 22:33:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:03,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:33:03,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798792907] [2021-11-12 22:33:03,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798792907] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:33:03,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1177321871] [2021-11-12 22:33:03,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:33:03,905 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:33:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:33:03,905 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:33:03,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 22:33:04,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:33:04,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447522789] [2021-11-12 22:33:04,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:33:04,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 1 [2021-11-12 22:33:04,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:33:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:33:04,195 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:33:04,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-12 22:33:04,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:33:04,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:33:04,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-12 22:33:04,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:33:04,369 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 341 treesize of output 325 [2021-11-12 22:33:04,584 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 19 treesize of output 15 [2021-11-12 22:33:04,624 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-12 22:33:04,625 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 27 treesize of output 26 [2021-11-12 22:33:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:33:04,802 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 [2021-11-12 22:33:05,013 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 15 treesize of output 7 [2021-11-12 22:33:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:05,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:33:23,803 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 118 treesize of output 110 [2021-11-12 22:33:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:33:23,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447522789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:33:23,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-12 22:33:23,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19] total 39 [2021-11-12 22:33:23,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775751463] [2021-11-12 22:33:23,914 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-12 22:33:23,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-12 22:33:23,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:33:23,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-12 22:33:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1432, Unknown=7, NotChecked=76, Total=1640 [2021-11-12 22:33:23,916 INFO L87 Difference]: Start difference. First operand 1764 states and 4281 transitions. Second operand has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 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) [2021-11-12 22:34:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:34:25,303 INFO L93 Difference]: Finished difference Result 4667 states and 10625 transitions. [2021-11-12 22:34:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-12 22:34:25,304 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 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 36 [2021-11-12 22:34:25,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:34:25,332 INFO L225 Difference]: With dead ends: 4667 [2021-11-12 22:34:25,332 INFO L226 Difference]: Without dead ends: 4573 [2021-11-12 22:34:25,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 105 SyntacticMatches, 20 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4111 ImplicationChecksByTransitivity, 77.1s TimeCoverageRelationStatistics Valid=859, Invalid=10906, Unknown=11, NotChecked=214, Total=11990 [2021-11-12 22:34:25,336 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 461 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 4469 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5960.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.67ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1881 IncrementalHoareTripleChecker+Unchecked, 6702.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:34:25,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 0 Invalid, 6420 Unknown, 0 Unchecked, 19.67ms Time], IncrementalHoareTripleChecker [70 Valid, 4469 Invalid, 0 Unknown, 1881 Unchecked, 6702.03ms Time] [2021-11-12 22:34:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2021-11-12 22:34:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 2902. [2021-11-12 22:34:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2900 states have (on average 2.48) internal successors, (7192), 2901 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:34:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 7192 transitions. [2021-11-12 22:34:25,448 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 7192 transitions. Word has length 36 [2021-11-12 22:34:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:34:25,448 INFO L470 AbstractCegarLoop]: Abstraction has 2902 states and 7192 transitions. [2021-11-12 22:34:25,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 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) [2021-11-12 22:34:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 7192 transitions. [2021-11-12 22:34:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 22:34:25,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:34:25,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:34:25,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-12 22:34:25,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-12 22:34:25,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:34:25,865 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-12 22:34:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:34:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1043790865, now seen corresponding path program 3 times [2021-11-12 22:34:25,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:34:25,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382025761] [2021-11-12 22:34:25,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:34:25,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:34:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:34:25,867 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:34:25,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958c4be-7e68-41bc-a9f6-174d0479aa34/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 22:34:26,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-12 22:34:26,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:34:26,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-12 22:34:26,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:34:26,114 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 22:34:26,115 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 1857 treesize of output 1761 [2021-11-12 22:34:27,113 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 19 treesize of output 15 [2021-11-12 22:34:27,179 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-12 22:34:27,180 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 27 treesize of output 26 [2021-11-12 22:34:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:34:27,431 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 [2021-11-12 22:34:27,814 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 15 treesize of output 7 [2021-11-12 22:34:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:34:27,846 INFO L328 TraceCheckSpWp]: Computing backward predicates...