./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:43:11,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:43:11,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:43:11,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:43:11,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:43:11,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:43:11,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:43:11,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:43:11,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:43:11,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:43:11,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:43:11,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:43:11,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:43:11,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:43:11,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:43:11,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:43:11,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:43:11,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:43:11,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:43:11,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:43:11,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:43:11,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:43:11,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:43:11,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:43:11,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:43:11,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:43:11,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:43:11,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:43:11,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:43:11,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:43:11,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:43:11,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:43:11,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:43:11,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:43:11,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:43:11,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:43:11,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:43:11,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:43:11,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:43:11,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:43:11,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:43:11,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:43:11,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:43:11,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:43:11,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:43:11,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:43:11,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:43:11,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:43:11,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:43:11,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:43:11,571 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:43:11,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:43:11,571 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:43:11,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:43:11,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:43:11,572 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:43:11,572 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:43:11,572 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:43:11,572 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:43:11,573 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:43:11,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:43:11,573 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:43:11,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:43:11,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:43:11,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:43:11,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:43:11,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:43:11,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:43:11,575 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:43:11,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:43:11,575 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:43:11,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:43:11,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:43:11,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:43:11,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:11,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:43:11,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:43:11,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:43:11,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:43:11,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:43:11,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:43:11,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:43:11,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:43:11,578 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_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2021-11-23 02:43:11,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:43:11,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:43:11,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:43:11,881 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:43:11,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:43:11,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-23 02:43:11,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/data/e52628cb8/87b77bcca2524ce4aa304bef475b3697/FLAGc6937fcb9 [2021-11-23 02:43:12,400 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:43:12,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2021-11-23 02:43:12,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/data/e52628cb8/87b77bcca2524ce4aa304bef475b3697/FLAGc6937fcb9 [2021-11-23 02:43:12,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/data/e52628cb8/87b77bcca2524ce4aa304bef475b3697 [2021-11-23 02:43:12,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:43:12,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:43:12,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:12,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:43:12,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:43:12,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:12" (1/1) ... [2021-11-23 02:43:12,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf47603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:12, skipping insertion in model container [2021-11-23 02:43:12,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:12" (1/1) ... [2021-11-23 02:43:12,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:43:12,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:43:13,074 WARN L230 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_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-23 02:43:13,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:13,104 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:43:13,137 WARN L230 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_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2021-11-23 02:43:13,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:13,154 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:43:13,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13 WrapperNode [2021-11-23 02:43:13,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:13,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:13,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:43:13,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:43:13,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,223 INFO L137 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 456 [2021-11-23 02:43:13,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:13,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:43:13,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:43:13,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:43:13,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:43:13,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:43:13,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:43:13,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:43:13,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (1/1) ... [2021-11-23 02:43:13,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:13,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:43:13,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:43:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:43:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:43:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:43:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:43:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 02:43:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 02:43:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 02:43:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 02:43:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-23 02:43:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-23 02:43:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-23 02:43:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-23 02:43:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:43:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 02:43:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 02:43:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:43:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:43:13,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:43:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:43:13,389 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 02:43:13,495 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:43:13,497 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:43:14,134 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:43:14,440 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:43:14,441 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 02:43:14,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:14 BoogieIcfgContainer [2021-11-23 02:43:14,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:43:14,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:43:14,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:43:14,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:43:14,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:43:12" (1/3) ... [2021-11-23 02:43:14,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcda8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:14, skipping insertion in model container [2021-11-23 02:43:14,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:13" (2/3) ... [2021-11-23 02:43:14,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcda8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:14, skipping insertion in model container [2021-11-23 02:43:14,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:14" (3/3) ... [2021-11-23 02:43:14,457 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2021-11-23 02:43:14,463 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 02:43:14,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:43:14,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:43:14,464 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 02:43:14,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,520 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,523 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,524 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,525 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,526 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,527 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,528 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,529 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,530 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,531 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,537 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,538 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,542 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,542 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,543 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,544 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,545 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,546 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,551 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem21#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,555 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post20#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet23#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post26#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,557 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short25#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post28#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem24#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem27#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,582 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,583 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,584 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet29#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,585 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,586 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~short33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,586 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 02:43:14,588 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-23 02:43:14,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:43:14,639 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 [2021-11-23 02:43:14,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 02:43:14,656 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-23 02:43:14,669 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 328 transitions, 688 flow [2021-11-23 02:43:14,672 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 328 transitions, 688 flow [2021-11-23 02:43:14,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 316 places, 328 transitions, 688 flow [2021-11-23 02:43:14,805 INFO L129 PetriNetUnfolder]: 25/324 cut-off events. [2021-11-23 02:43:14,806 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-23 02:43:14,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 324 events. 25/324 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 188 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 284. Up to 2 conditions per place. [2021-11-23 02:43:14,819 INFO L116 LiptonReduction]: Number of co-enabled transitions 2544 [2021-11-23 02:43:28,420 INFO L131 LiptonReduction]: Checked pairs total: 6304 [2021-11-23 02:43:28,421 INFO L133 LiptonReduction]: Total number of compositions: 336 [2021-11-23 02:43:28,434 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 46 transitions, 124 flow [2021-11-23 02:43:28,501 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 02:43:28,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:28,528 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, 1, 1, 1, 1] [2021-11-23 02:43:28,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash -106508165, now seen corresponding path program 1 times [2021-11-23 02:43:28,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:28,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892453350] [2021-11-23 02:43:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:28,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:29,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:29,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892453350] [2021-11-23 02:43:29,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892453350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:29,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:29,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:43:29,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513638521] [2021-11-23 02:43:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:29,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:29,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:29,075 INFO L87 Difference]: Start difference. First operand has 646 states, 645 states have (on average 4.113178294573643) internal successors, (2653), 645 states have internal predecessors, (2653), 0 states have call successors, (0), 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, 2 states have (on average 12.5) internal successors, (25), 2 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) [2021-11-23 02:43:29,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:29,242 INFO L93 Difference]: Finished difference Result 765 states and 3110 transitions. [2021-11-23 02:43:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 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 25 [2021-11-23 02:43:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:29,283 INFO L225 Difference]: With dead ends: 765 [2021-11-23 02:43:29,283 INFO L226 Difference]: Without dead ends: 756 [2021-11-23 02:43:29,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:29,289 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:29,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-23 02:43:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 726. [2021-11-23 02:43:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 4.085517241379311) internal successors, (2962), 725 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 2962 transitions. [2021-11-23 02:43:29,435 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 2962 transitions. Word has length 25 [2021-11-23 02:43:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:29,436 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 2962 transitions. [2021-11-23 02:43:29,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 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) [2021-11-23 02:43:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 2962 transitions. [2021-11-23 02:43:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:43:29,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:29,443 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, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:29,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:43:29,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:29,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1782338430, now seen corresponding path program 1 times [2021-11-23 02:43:29,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:29,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627193480] [2021-11-23 02:43:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:29,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:29,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:29,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627193480] [2021-11-23 02:43:29,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627193480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:29,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:29,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:29,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518419474] [2021-11-23 02:43:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:29,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:29,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:29,633 INFO L87 Difference]: Start difference. First operand 726 states and 2962 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:29,916 INFO L93 Difference]: Finished difference Result 1071 states and 3868 transitions. [2021-11-23 02:43:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:29,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 02:43:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:29,925 INFO L225 Difference]: With dead ends: 1071 [2021-11-23 02:43:29,926 INFO L226 Difference]: Without dead ends: 727 [2021-11-23 02:43:29,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:29,929 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:29,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:43:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-23 02:43:29,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-23 02:43:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 4.081267217630854) internal successors, (2963), 726 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 2963 transitions. [2021-11-23 02:43:29,970 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 2963 transitions. Word has length 27 [2021-11-23 02:43:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:29,970 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 2963 transitions. [2021-11-23 02:43:29,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 2963 transitions. [2021-11-23 02:43:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:43:29,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:29,975 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:29,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:43:29,976 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:29,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2117051448, now seen corresponding path program 1 times [2021-11-23 02:43:29,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:29,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752390707] [2021-11-23 02:43:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:29,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:43:30,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752390707] [2021-11-23 02:43:30,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752390707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:30,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:30,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:30,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437838718] [2021-11-23 02:43:30,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:30,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:30,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:30,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:30,151 INFO L87 Difference]: Start difference. First operand 727 states and 2963 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:30,281 INFO L93 Difference]: Finished difference Result 1363 states and 5446 transitions. [2021-11-23 02:43:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 02:43:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:30,297 INFO L225 Difference]: With dead ends: 1363 [2021-11-23 02:43:30,298 INFO L226 Difference]: Without dead ends: 1309 [2021-11-23 02:43:30,298 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 [2021-11-23 02:43:30,302 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:30,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2021-11-23 02:43:30,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1155. [2021-11-23 02:43:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 4.0823223570190645) internal successors, (4711), 1154 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 4711 transitions. [2021-11-23 02:43:30,374 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 4711 transitions. Word has length 28 [2021-11-23 02:43:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:30,375 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 4711 transitions. [2021-11-23 02:43:30,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 4711 transitions. [2021-11-23 02:43:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:43:30,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:30,381 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:30,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:43:30,382 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash -291413595, now seen corresponding path program 1 times [2021-11-23 02:43:30,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:30,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590670945] [2021-11-23 02:43:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:30,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:43:30,570 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590670945] [2021-11-23 02:43:30,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590670945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:30,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:30,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:30,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364890708] [2021-11-23 02:43:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:30,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:30,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:30,573 INFO L87 Difference]: Start difference. First operand 1155 states and 4711 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:30,730 INFO L93 Difference]: Finished difference Result 1149 states and 4470 transitions. [2021-11-23 02:43:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:30,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 02:43:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:30,744 INFO L225 Difference]: With dead ends: 1149 [2021-11-23 02:43:30,745 INFO L226 Difference]: Without dead ends: 1133 [2021-11-23 02:43:30,745 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 [2021-11-23 02:43:30,746 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:30,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-23 02:43:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1097. [2021-11-23 02:43:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 3.9708029197080292) internal successors, (4352), 1096 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 4352 transitions. [2021-11-23 02:43:30,813 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 4352 transitions. Word has length 28 [2021-11-23 02:43:30,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:30,813 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 4352 transitions. [2021-11-23 02:43:30,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 4352 transitions. [2021-11-23 02:43:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:43:30,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:30,820 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:30,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:43:30,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash -676786127, now seen corresponding path program 1 times [2021-11-23 02:43:30,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192314451] [2021-11-23 02:43:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:30,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:43:30,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192314451] [2021-11-23 02:43:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192314451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:30,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:30,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:30,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644508268] [2021-11-23 02:43:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:30,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:30,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:30,945 INFO L87 Difference]: Start difference. First operand 1097 states and 4352 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:31,049 INFO L93 Difference]: Finished difference Result 983 states and 3885 transitions. [2021-11-23 02:43:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 02:43:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:31,060 INFO L225 Difference]: With dead ends: 983 [2021-11-23 02:43:31,061 INFO L226 Difference]: Without dead ends: 959 [2021-11-23 02:43:31,061 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 [2021-11-23 02:43:31,062 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:31,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-23 02:43:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 957. [2021-11-23 02:43:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 4.00418410041841) internal successors, (3828), 956 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3828 transitions. [2021-11-23 02:43:31,114 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3828 transitions. Word has length 28 [2021-11-23 02:43:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:31,114 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 3828 transitions. [2021-11-23 02:43:31,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3828 transitions. [2021-11-23 02:43:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 02:43:31,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:31,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:31,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:43:31,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1519618106, now seen corresponding path program 1 times [2021-11-23 02:43:31,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:31,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175068290] [2021-11-23 02:43:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:31,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:43:31,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:31,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175068290] [2021-11-23 02:43:31,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175068290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:31,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:31,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:43:31,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044105776] [2021-11-23 02:43:31,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:31,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:31,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:31,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:31,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:31,234 INFO L87 Difference]: Start difference. First operand 957 states and 3828 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:31,429 INFO L93 Difference]: Finished difference Result 1708 states and 6442 transitions. [2021-11-23 02:43:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:31,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-23 02:43:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:31,440 INFO L225 Difference]: With dead ends: 1708 [2021-11-23 02:43:31,440 INFO L226 Difference]: Without dead ends: 958 [2021-11-23 02:43:31,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:31,442 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:31,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:43:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-23 02:43:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2021-11-23 02:43:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 4.001044932079415) internal successors, (3829), 957 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3829 transitions. [2021-11-23 02:43:31,490 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3829 transitions. Word has length 32 [2021-11-23 02:43:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:31,492 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3829 transitions. [2021-11-23 02:43:31,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3829 transitions. [2021-11-23 02:43:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 02:43:31,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:31,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:31,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:43:31,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:31,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:31,507 INFO L85 PathProgramCache]: Analyzing trace with hash 220988336, now seen corresponding path program 1 times [2021-11-23 02:43:31,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:31,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678627744] [2021-11-23 02:43:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:31,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:43:31,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:31,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678627744] [2021-11-23 02:43:31,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678627744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:31,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:31,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:43:31,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042129481] [2021-11-23 02:43:31,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:31,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:31,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:31,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:31,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:31,601 INFO L87 Difference]: Start difference. First operand 958 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:31,739 INFO L93 Difference]: Finished difference Result 1115 states and 4217 transitions. [2021-11-23 02:43:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:31,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-23 02:43:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:31,750 INFO L225 Difference]: With dead ends: 1115 [2021-11-23 02:43:31,750 INFO L226 Difference]: Without dead ends: 959 [2021-11-23 02:43:31,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:31,751 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:31,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-23 02:43:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2021-11-23 02:43:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 3.997912317327766) internal successors, (3830), 958 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 3830 transitions. [2021-11-23 02:43:31,799 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 3830 transitions. Word has length 33 [2021-11-23 02:43:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:31,800 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 3830 transitions. [2021-11-23 02:43:31,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:31,800 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 3830 transitions. [2021-11-23 02:43:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:43:31,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:31,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:31,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:43:31,805 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:31,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1113111258, now seen corresponding path program 1 times [2021-11-23 02:43:31,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708806967] [2021-11-23 02:43:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:31,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:43:31,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:31,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708806967] [2021-11-23 02:43:31,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708806967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:31,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:31,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:43:31,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317412426] [2021-11-23 02:43:31,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:31,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:31,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:31,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:31,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:31,883 INFO L87 Difference]: Start difference. First operand 959 states and 3830 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2021-11-23 02:43:32,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:32,011 INFO L93 Difference]: Finished difference Result 1093 states and 4201 transitions. [2021-11-23 02:43:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:32,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 02:43:32,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:32,022 INFO L225 Difference]: With dead ends: 1093 [2021-11-23 02:43:32,022 INFO L226 Difference]: Without dead ends: 960 [2021-11-23 02:43:32,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:32,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:32,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-23 02:43:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2021-11-23 02:43:32,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.994786235662148) internal successors, (3831), 959 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3831 transitions. [2021-11-23 02:43:32,072 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3831 transitions. Word has length 34 [2021-11-23 02:43:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:32,072 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 3831 transitions. [2021-11-23 02:43:32,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2021-11-23 02:43:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3831 transitions. [2021-11-23 02:43:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:43:32,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:32,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:43:32,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -912621320, now seen corresponding path program 1 times [2021-11-23 02:43:32,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737996653] [2021-11-23 02:43:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:32,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:43:32,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:32,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737996653] [2021-11-23 02:43:32,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737996653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:32,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:32,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:32,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402232529] [2021-11-23 02:43:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:32,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:32,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:32,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:32,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:32,228 INFO L87 Difference]: Start difference. First operand 960 states and 3831 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:32,300 INFO L93 Difference]: Finished difference Result 580 states and 2328 transitions. [2021-11-23 02:43:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:32,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 02:43:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:32,307 INFO L225 Difference]: With dead ends: 580 [2021-11-23 02:43:32,307 INFO L226 Difference]: Without dead ends: 572 [2021-11-23 02:43:32,307 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 [2021-11-23 02:43:32,308 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:32,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-23 02:43:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2021-11-23 02:43:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 4.042031523642732) internal successors, (2308), 571 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 2308 transitions. [2021-11-23 02:43:32,361 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 2308 transitions. Word has length 35 [2021-11-23 02:43:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:32,361 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 2308 transitions. [2021-11-23 02:43:32,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 2308 transitions. [2021-11-23 02:43:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 02:43:32,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:32,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:32,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:43:32,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash -624671609, now seen corresponding path program 1 times [2021-11-23 02:43:32,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:32,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71947941] [2021-11-23 02:43:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:32,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:43:32,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71947941] [2021-11-23 02:43:32,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71947941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:32,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285750786] [2021-11-23 02:43:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:32,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:32,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:32,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:32,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:43:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:32,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:43:32,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:43:32,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:43:33,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285750786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:43:33,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222661288] [2021-11-23 02:43:33,150 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) [2021-11-23 02:43:33,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:43:33,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-11-23 02:43:33,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446538561] [2021-11-23 02:43:33,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:43:33,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:43:33,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:43:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:43:33,155 INFO L87 Difference]: Start difference. First operand 572 states and 2308 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:33,758 INFO L93 Difference]: Finished difference Result 984 states and 3468 transitions. [2021-11-23 02:43:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:43:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 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 37 [2021-11-23 02:43:33,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:33,765 INFO L225 Difference]: With dead ends: 984 [2021-11-23 02:43:33,765 INFO L226 Difference]: Without dead ends: 574 [2021-11-23 02:43:33,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:43:33,766 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:33,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:43:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-23 02:43:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2021-11-23 02:43:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 4.031413612565445) internal successors, (2310), 573 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 2310 transitions. [2021-11-23 02:43:33,794 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 2310 transitions. Word has length 37 [2021-11-23 02:43:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:33,794 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 2310 transitions. [2021-11-23 02:43:33,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 2310 transitions. [2021-11-23 02:43:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 02:43:33,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:33,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:33,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:34,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:43:34,013 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 499277907, now seen corresponding path program 2 times [2021-11-23 02:43:34,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:34,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616605034] [2021-11-23 02:43:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:34,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 02:43:34,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:34,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616605034] [2021-11-23 02:43:34,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616605034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:34,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:34,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:34,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156150130] [2021-11-23 02:43:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:34,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:34,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:34,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:34,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:34,269 INFO L87 Difference]: Start difference. First operand 574 states and 2310 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:34,433 INFO L93 Difference]: Finished difference Result 1622 states and 6532 transitions. [2021-11-23 02:43:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:43:34,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 02:43:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:34,452 INFO L225 Difference]: With dead ends: 1622 [2021-11-23 02:43:34,452 INFO L226 Difference]: Without dead ends: 1590 [2021-11-23 02:43:34,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:34,453 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:34,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-23 02:43:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1318. [2021-11-23 02:43:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 4.146545178435839) internal successors, (5461), 1317 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 5461 transitions. [2021-11-23 02:43:34,519 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 5461 transitions. Word has length 39 [2021-11-23 02:43:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:34,520 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 5461 transitions. [2021-11-23 02:43:34,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 5461 transitions. [2021-11-23 02:43:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 02:43:34,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:34,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:34,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:43:34,526 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 192134157, now seen corresponding path program 1 times [2021-11-23 02:43:34,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:34,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734776646] [2021-11-23 02:43:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:34,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:43:34,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:34,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734776646] [2021-11-23 02:43:34,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734776646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:34,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6462218] [2021-11-23 02:43:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:34,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:34,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:34,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:34,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:43:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:34,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:43:34,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:43:35,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:43:35,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6462218] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:43:35,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [636183774] [2021-11-23 02:43:35,249 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) [2021-11-23 02:43:35,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:43:35,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-23 02:43:35,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350319956] [2021-11-23 02:43:35,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:43:35,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 02:43:35,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 02:43:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:43:35,255 INFO L87 Difference]: Start difference. First operand 1318 states and 5461 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:35,617 INFO L93 Difference]: Finished difference Result 1425 states and 5697 transitions. [2021-11-23 02:43:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:43:35,618 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 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 43 [2021-11-23 02:43:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:35,634 INFO L225 Difference]: With dead ends: 1425 [2021-11-23 02:43:35,634 INFO L226 Difference]: Without dead ends: 1319 [2021-11-23 02:43:35,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:43:35,636 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:35,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:43:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2021-11-23 02:43:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2021-11-23 02:43:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 4.144157814871017) internal successors, (5462), 1318 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 5462 transitions. [2021-11-23 02:43:35,706 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 5462 transitions. Word has length 43 [2021-11-23 02:43:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:35,707 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 5462 transitions. [2021-11-23 02:43:35,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 5462 transitions. [2021-11-23 02:43:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:43:35,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:35,713 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:35,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:35,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 02:43:35,939 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:35,939 INFO L85 PathProgramCache]: Analyzing trace with hash 454160471, now seen corresponding path program 2 times [2021-11-23 02:43:35,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:35,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3562277] [2021-11-23 02:43:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:35,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:43:36,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3562277] [2021-11-23 02:43:36,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3562277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:36,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:36,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:43:36,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633589761] [2021-11-23 02:43:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:36,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:36,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:36,211 INFO L87 Difference]: Start difference. First operand 1319 states and 5462 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:36,392 INFO L93 Difference]: Finished difference Result 3553 states and 14819 transitions. [2021-11-23 02:43:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:43:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 44 [2021-11-23 02:43:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:36,441 INFO L225 Difference]: With dead ends: 3553 [2021-11-23 02:43:36,441 INFO L226 Difference]: Without dead ends: 3521 [2021-11-23 02:43:36,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:36,442 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 82 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:36,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2021-11-23 02:43:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2777. [2021-11-23 02:43:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 4.410302593659942) internal successors, (12243), 2776 states have internal predecessors, (12243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 12243 transitions. [2021-11-23 02:43:36,581 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 12243 transitions. Word has length 44 [2021-11-23 02:43:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:36,581 INFO L470 AbstractCegarLoop]: Abstraction has 2777 states and 12243 transitions. [2021-11-23 02:43:36,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 12243 transitions. [2021-11-23 02:43:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:43:36,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:36,592 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:36,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:43:36,592 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:36,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1637187787, now seen corresponding path program 1 times [2021-11-23 02:43:36,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:36,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846743951] [2021-11-23 02:43:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:36,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 02:43:36,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:36,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846743951] [2021-11-23 02:43:36,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846743951] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:36,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122138888] [2021-11-23 02:43:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:36,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:36,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:36,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:36,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:43:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:36,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:43:37,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:43:37,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:43:37,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122138888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:37,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:43:37,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-23 02:43:37,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751809457] [2021-11-23 02:43:37,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:37,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:37,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:43:37,100 INFO L87 Difference]: Start difference. First operand 2777 states and 12243 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:37,306 INFO L93 Difference]: Finished difference Result 7523 states and 33218 transitions. [2021-11-23 02:43:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:43:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 44 [2021-11-23 02:43:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:37,354 INFO L225 Difference]: With dead ends: 7523 [2021-11-23 02:43:37,354 INFO L226 Difference]: Without dead ends: 7485 [2021-11-23 02:43:37,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:43:37,355 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:37,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7485 states. [2021-11-23 02:43:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7485 to 5857. [2021-11-23 02:43:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5856 states have (on average 4.660177595628415) internal successors, (27290), 5856 states have internal predecessors, (27290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 27290 transitions. [2021-11-23 02:43:37,707 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 27290 transitions. Word has length 44 [2021-11-23 02:43:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:37,708 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 27290 transitions. [2021-11-23 02:43:37,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 27290 transitions. [2021-11-23 02:43:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:43:37,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:37,727 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:37,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:37,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 02:43:37,955 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-23 02:43:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:37,955 INFO L85 PathProgramCache]: Analyzing trace with hash 644310655, now seen corresponding path program 1 times [2021-11-23 02:43:37,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:37,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111613804] [2021-11-23 02:43:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:37,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:41,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:41,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111613804] [2021-11-23 02:43:41,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111613804] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:41,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298710180] [2021-11-23 02:43:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:41,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:41,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:41,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:41,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe376ad-a96b-47e0-9669-9bc4d0f1eaa2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:43:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-23 02:43:42,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:42,973 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 [2021-11-23 02:43:43,130 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 17 treesize of output 13 [2021-11-23 02:43:43,283 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 17 treesize of output 13 [2021-11-23 02:43:43,439 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 17 treesize of output 13 [2021-11-23 02:43:43,601 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 17 treesize of output 13 [2021-11-23 02:43:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:43:45,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:56,102 WARN L227 SmtUtils]: Spent 13.59s on a formula simplification. DAG size of input: 321 DAG size of output: 297 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:44:56,103 INFO L354 Elim1Store]: treesize reduction 152, result has 87.8 percent of original size [2021-11-23 02:44:56,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 33457377538 treesize of output 32838849862