./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:36:57,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:36:57,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:36:57,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:36:57,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:36:57,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:36:57,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:36:57,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:36:57,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:36:57,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:36:57,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:36:57,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:36:57,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:36:57,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:36:57,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:36:57,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:36:57,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:36:57,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:36:57,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:36:57,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:36:57,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:36:57,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:36:57,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:36:57,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:36:57,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:36:57,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:36:57,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:36:57,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:36:57,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:36:57,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:36:57,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:36:57,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:36:57,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:36:57,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:36:57,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:36:57,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:36:57,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:36:57,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:36:57,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:36:57,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:36:57,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:36:57,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 12:36:57,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:36:57,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:36:57,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:36:57,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:36:57,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:36:57,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:36:57,528 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:36:57,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:36:57,528 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:36:57,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:36:57,528 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:36:57,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:36:57,529 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:36:57,529 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:36:57,529 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:36:57,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:36:57,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:36:57,529 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:36:57,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:36:57,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:36:57,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:36:57,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:36:57,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:36:57,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:36:57,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:36:57,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:36:57,531 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:36:57,531 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:36:57,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:36:57,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:36:57,532 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:36:57,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:36:57,533 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:36:57,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:36:57,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:36:57,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 [2022-12-14 12:36:57,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:36:57,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:36:57,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:36:57,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:36:57,751 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:36:57,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/reorder_5.i [2022-12-14 12:37:00,344 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:37:00,588 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:37:00,589 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/sv-benchmarks/c/pthread/reorder_5.i [2022-12-14 12:37:00,603 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data/df6b91ddb/6b0b05a7548945e98fd68f9bdf8341da/FLAGe9fb27c6a [2022-12-14 12:37:00,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data/df6b91ddb/6b0b05a7548945e98fd68f9bdf8341da [2022-12-14 12:37:00,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:37:00,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:37:00,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:37:00,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:37:00,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:37:00,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:37:00" (1/1) ... [2022-12-14 12:37:00,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53603b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:00, skipping insertion in model container [2022-12-14 12:37:00,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:37:00" (1/1) ... [2022-12-14 12:37:00,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:37:00,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:37:01,356 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,362 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,365 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,366 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,367 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,370 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,370 WARN L237 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_9e0299ba-2820-43f9-a4f0-f1542a27be4a/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-14 12:37:01,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:37:01,379 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:37:01,407 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,409 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,410 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,411 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,412 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,414 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:01,415 WARN L237 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_9e0299ba-2820-43f9-a4f0-f1542a27be4a/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-14 12:37:01,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:37:01,459 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:37:01,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01 WrapperNode [2022-12-14 12:37:01,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:37:01,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:37:01,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:37:01,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:37:01,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,495 INFO L138 Inliner]: procedures = 369, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2022-12-14 12:37:01,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:37:01,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:37:01,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:37:01,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:37:01,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:37:01,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:37:01,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:37:01,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:37:01,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (1/1) ... [2022-12-14 12:37:01,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:37:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:01,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:37:01,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:37:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:37:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:37:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:37:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-14 12:37:01,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-14 12:37:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:37:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:37:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-14 12:37:01,578 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-14 12:37:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:37:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:37:01,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:37:01,580 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 12:37:01,687 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:37:01,689 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:37:01,974 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:37:01,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:37:01,984 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:37:01,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:37:01 BoogieIcfgContainer [2022-12-14 12:37:01,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:37:01,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:37:01,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:37:01,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:37:01,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:37:00" (1/3) ... [2022-12-14 12:37:01,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247a3815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:37:01, skipping insertion in model container [2022-12-14 12:37:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:01" (2/3) ... [2022-12-14 12:37:01,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247a3815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:37:01, skipping insertion in model container [2022-12-14 12:37:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:37:01" (3/3) ... [2022-12-14 12:37:01,996 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-12-14 12:37:02,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:37:02,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-14 12:37:02,015 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:37:02,073 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 12:37:02,101 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:37:02,115 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 205 transitions, 432 flow [2022-12-14 12:37:02,117 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 205 transitions, 432 flow [2022-12-14 12:37:02,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 205 transitions, 432 flow [2022-12-14 12:37:02,217 INFO L130 PetriNetUnfolder]: 37/430 cut-off events. [2022-12-14 12:37:02,217 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-14 12:37:02,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 430 events. 37/430 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1713 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-12-14 12:37:02,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 2694 [2022-12-14 12:37:11,619 INFO L134 LiptonReduction]: Checked pairs total: 5004 [2022-12-14 12:37:11,619 INFO L136 LiptonReduction]: Total number of compositions: 236 [2022-12-14 12:37:11,626 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 56 transitions, 134 flow [2022-12-14 12:37:11,660 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 414 states, 302 states have (on average 2.6456953642384105) internal successors, (799), 413 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:11,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:37:11,682 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@401ff969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:37:11,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-14 12:37:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 302 states have (on average 2.6456953642384105) internal successors, (799), 413 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 12:37:11,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:11,688 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 12:37:11,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash 748, now seen corresponding path program 1 times [2022-12-14 12:37:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:11,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085067793] [2022-12-14 12:37:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:11,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085067793] [2022-12-14 12:37:11,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085067793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:11,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:11,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 12:37:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801397510] [2022-12-14 12:37:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:11,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:37:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:37:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:37:11,808 INFO L87 Difference]: Start difference. First operand has 414 states, 302 states have (on average 2.6456953642384105) internal successors, (799), 413 states have internal predecessors, (799), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:11,876 INFO L93 Difference]: Finished difference Result 402 states and 787 transitions. [2022-12-14 12:37:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:37:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-12-14 12:37:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:11,886 INFO L225 Difference]: With dead ends: 402 [2022-12-14 12:37:11,886 INFO L226 Difference]: Without dead ends: 393 [2022-12-14 12:37:11,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:37:11,889 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:11,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-12-14 12:37:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-12-14 12:37:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 298 states have (on average 2.5838926174496644) internal successors, (770), 392 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 770 transitions. [2022-12-14 12:37:11,931 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 770 transitions. Word has length 1 [2022-12-14 12:37:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 770 transitions. [2022-12-14 12:37:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 770 transitions. [2022-12-14 12:37:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:11,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:11,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:11,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:37:11,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 24218, now seen corresponding path program 1 times [2022-12-14 12:37:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266989095] [2022-12-14 12:37:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:12,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:12,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266989095] [2022-12-14 12:37:12,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266989095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:12,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:12,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:12,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918645070] [2022-12-14 12:37:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:12,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:12,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:12,131 INFO L87 Difference]: Start difference. First operand 393 states and 770 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:12,184 INFO L93 Difference]: Finished difference Result 373 states and 732 transitions. [2022-12-14 12:37:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:12,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:12,188 INFO L225 Difference]: With dead ends: 373 [2022-12-14 12:37:12,188 INFO L226 Difference]: Without dead ends: 373 [2022-12-14 12:37:12,188 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:12,189 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:12,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 8 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-12-14 12:37:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-12-14 12:37:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 2.5594405594405596) internal successors, (732), 372 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 732 transitions. [2022-12-14 12:37:12,215 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 732 transitions. Word has length 2 [2022-12-14 12:37:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:12,216 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 732 transitions. [2022-12-14 12:37:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 732 transitions. [2022-12-14 12:37:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:12,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:12,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:12,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:37:12,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:12,217 INFO L85 PathProgramCache]: Analyzing trace with hash 24219, now seen corresponding path program 1 times [2022-12-14 12:37:12,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:12,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993040361] [2022-12-14 12:37:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:12,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:12,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993040361] [2022-12-14 12:37:12,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993040361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:12,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:12,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896251843] [2022-12-14 12:37:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:12,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:12,374 INFO L87 Difference]: Start difference. First operand 373 states and 732 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:12,456 INFO L93 Difference]: Finished difference Result 380 states and 739 transitions. [2022-12-14 12:37:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:12,459 INFO L225 Difference]: With dead ends: 380 [2022-12-14 12:37:12,459 INFO L226 Difference]: Without dead ends: 380 [2022-12-14 12:37:12,460 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:12,460 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:12,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-12-14 12:37:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 373. [2022-12-14 12:37:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 287 states have (on average 2.557491289198606) internal successors, (734), 372 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 734 transitions. [2022-12-14 12:37:12,469 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 734 transitions. Word has length 2 [2022-12-14 12:37:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:12,470 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 734 transitions. [2022-12-14 12:37:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 734 transitions. [2022-12-14 12:37:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:12,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:12,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:12,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:37:12,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 23854, now seen corresponding path program 1 times [2022-12-14 12:37:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:12,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228407171] [2022-12-14 12:37:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:12,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:12,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:12,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228407171] [2022-12-14 12:37:12,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228407171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:12,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:12,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499245771] [2022-12-14 12:37:12,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:12,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:12,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:12,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:12,530 INFO L87 Difference]: Start difference. First operand 373 states and 734 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:12,580 INFO L93 Difference]: Finished difference Result 353 states and 695 transitions. [2022-12-14 12:37:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:12,583 INFO L225 Difference]: With dead ends: 353 [2022-12-14 12:37:12,584 INFO L226 Difference]: Without dead ends: 353 [2022-12-14 12:37:12,584 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:12,585 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:12,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 6 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-12-14 12:37:12,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-12-14 12:37:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 275 states have (on average 2.5272727272727273) internal successors, (695), 352 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 695 transitions. [2022-12-14 12:37:12,592 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 695 transitions. Word has length 2 [2022-12-14 12:37:12,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:12,592 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 695 transitions. [2022-12-14 12:37:12,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 695 transitions. [2022-12-14 12:37:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:12,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:12,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:12,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:37:12,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:12,593 INFO L85 PathProgramCache]: Analyzing trace with hash 23855, now seen corresponding path program 1 times [2022-12-14 12:37:12,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:12,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215176202] [2022-12-14 12:37:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:12,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:12,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:12,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215176202] [2022-12-14 12:37:12,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215176202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:12,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:12,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207086842] [2022-12-14 12:37:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:12,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:12,686 INFO L87 Difference]: Start difference. First operand 353 states and 695 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:12,728 INFO L93 Difference]: Finished difference Result 333 states and 656 transitions. [2022-12-14 12:37:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:12,731 INFO L225 Difference]: With dead ends: 333 [2022-12-14 12:37:12,731 INFO L226 Difference]: Without dead ends: 333 [2022-12-14 12:37:12,731 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:12,732 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:12,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 6 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-12-14 12:37:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-12-14 12:37:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 263 states have (on average 2.494296577946768) internal successors, (656), 332 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 656 transitions. [2022-12-14 12:37:12,747 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 656 transitions. Word has length 2 [2022-12-14 12:37:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:12,747 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 656 transitions. [2022-12-14 12:37:12,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 656 transitions. [2022-12-14 12:37:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:12,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:12,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:12,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:37:12,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash 750997, now seen corresponding path program 1 times [2022-12-14 12:37:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625003412] [2022-12-14 12:37:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:12,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:12,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625003412] [2022-12-14 12:37:12,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625003412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:12,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:12,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:37:12,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389144875] [2022-12-14 12:37:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:12,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:37:12,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:37:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:12,840 INFO L87 Difference]: Start difference. First operand 333 states and 656 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:12,925 INFO L93 Difference]: Finished difference Result 336 states and 659 transitions. [2022-12-14 12:37:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:12,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:12,927 INFO L225 Difference]: With dead ends: 336 [2022-12-14 12:37:12,927 INFO L226 Difference]: Without dead ends: 336 [2022-12-14 12:37:12,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:12,928 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:12,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-12-14 12:37:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2022-12-14 12:37:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 264 states have (on average 2.496212121212121) internal successors, (659), 332 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 659 transitions. [2022-12-14 12:37:12,933 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 659 transitions. Word has length 3 [2022-12-14 12:37:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:12,933 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 659 transitions. [2022-12-14 12:37:12,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 659 transitions. [2022-12-14 12:37:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:12,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:12,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:12,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:37:12,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash 750998, now seen corresponding path program 1 times [2022-12-14 12:37:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358557787] [2022-12-14 12:37:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:12,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:12,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:12,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358557787] [2022-12-14 12:37:12,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358557787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:12,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:12,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205070284] [2022-12-14 12:37:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:12,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:12,967 INFO L87 Difference]: Start difference. First operand 333 states and 659 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:13,009 INFO L93 Difference]: Finished difference Result 301 states and 594 transitions. [2022-12-14 12:37:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:13,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:13,010 INFO L225 Difference]: With dead ends: 301 [2022-12-14 12:37:13,010 INFO L226 Difference]: Without dead ends: 301 [2022-12-14 12:37:13,011 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:13,011 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:13,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-12-14 12:37:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-12-14 12:37:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 2.4344262295081966) internal successors, (594), 300 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 594 transitions. [2022-12-14 12:37:13,017 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 594 transitions. Word has length 3 [2022-12-14 12:37:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 594 transitions. [2022-12-14 12:37:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 594 transitions. [2022-12-14 12:37:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:13,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:13,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:13,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:37:13,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash 750718, now seen corresponding path program 1 times [2022-12-14 12:37:13,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:13,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751361987] [2022-12-14 12:37:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:13,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:13,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751361987] [2022-12-14 12:37:13,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751361987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:13,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:13,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473746990] [2022-12-14 12:37:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:13,086 INFO L87 Difference]: Start difference. First operand 301 states and 594 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:13,127 INFO L93 Difference]: Finished difference Result 269 states and 529 transitions. [2022-12-14 12:37:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:13,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:13,130 INFO L225 Difference]: With dead ends: 269 [2022-12-14 12:37:13,130 INFO L226 Difference]: Without dead ends: 269 [2022-12-14 12:37:13,130 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:13,131 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:13,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-12-14 12:37:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-12-14 12:37:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 224 states have (on average 2.361607142857143) internal successors, (529), 268 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 529 transitions. [2022-12-14 12:37:13,136 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 529 transitions. Word has length 3 [2022-12-14 12:37:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:13,136 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 529 transitions. [2022-12-14 12:37:13,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 529 transitions. [2022-12-14 12:37:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:13,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:13,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:13,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:37:13,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 750719, now seen corresponding path program 1 times [2022-12-14 12:37:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:13,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773469982] [2022-12-14 12:37:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:13,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:13,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773469982] [2022-12-14 12:37:13,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773469982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:13,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:13,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533013837] [2022-12-14 12:37:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:13,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:13,234 INFO L87 Difference]: Start difference. First operand 269 states and 529 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:13,270 INFO L93 Difference]: Finished difference Result 237 states and 464 transitions. [2022-12-14 12:37:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:13,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:13,272 INFO L225 Difference]: With dead ends: 237 [2022-12-14 12:37:13,272 INFO L226 Difference]: Without dead ends: 237 [2022-12-14 12:37:13,272 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:13,272 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:13,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-12-14 12:37:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-12-14 12:37:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 204 states have (on average 2.2745098039215685) internal successors, (464), 236 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 464 transitions. [2022-12-14 12:37:13,276 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 464 transitions. Word has length 3 [2022-12-14 12:37:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:13,277 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 464 transitions. [2022-12-14 12:37:13,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 464 transitions. [2022-12-14 12:37:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:37:13,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:13,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:37:13,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:37:13,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash 722029502, now seen corresponding path program 1 times [2022-12-14 12:37:13,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:13,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951660949] [2022-12-14 12:37:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:13,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:13,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951660949] [2022-12-14 12:37:13,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951660949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:37:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628545470] [2022-12-14 12:37:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:13,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:37:13,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:13,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:37:13,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:37:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:13,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 12:37:13,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:37:13,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:37:13,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-14 12:37:13,629 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 12:37:13,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 12:37:13,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 12:37:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:13,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:37:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:13,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628545470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:37:13,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [424578996] [2022-12-14 12:37:13,862 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-12-14 12:37:13,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:37:13,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-14 12:37:13,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648153921] [2022-12-14 12:37:13,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:37:13,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 12:37:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 12:37:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:37:13,865 INFO L87 Difference]: Start difference. First operand 237 states and 464 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:14,072 INFO L93 Difference]: Finished difference Result 258 states and 495 transitions. [2022-12-14 12:37:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:37:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:37:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:14,075 INFO L225 Difference]: With dead ends: 258 [2022-12-14 12:37:14,075 INFO L226 Difference]: Without dead ends: 258 [2022-12-14 12:37:14,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:37:14,076 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:14,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 25 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:37:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-12-14 12:37:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 243. [2022-12-14 12:37:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 211 states have (on average 2.241706161137441) internal successors, (473), 242 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 473 transitions. [2022-12-14 12:37:14,084 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 473 transitions. Word has length 5 [2022-12-14 12:37:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:14,084 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 473 transitions. [2022-12-14 12:37:14,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 473 transitions. [2022-12-14 12:37:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:37:14,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:14,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:37:14,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:37:14,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:37:14,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 721725906, now seen corresponding path program 1 times [2022-12-14 12:37:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513620873] [2022-12-14 12:37:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:14,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:14,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513620873] [2022-12-14 12:37:14,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513620873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:14,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:14,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:14,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630118217] [2022-12-14 12:37:14,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:14,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:14,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:14,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:14,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:14,396 INFO L87 Difference]: Start difference. First operand 243 states and 473 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:14,485 INFO L93 Difference]: Finished difference Result 249 states and 455 transitions. [2022-12-14 12:37:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-12-14 12:37:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:14,487 INFO L225 Difference]: With dead ends: 249 [2022-12-14 12:37:14,488 INFO L226 Difference]: Without dead ends: 248 [2022-12-14 12:37:14,488 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:14,488 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:14,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-12-14 12:37:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 232. [2022-12-14 12:37:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 202 states have (on average 2.1683168316831685) internal successors, (438), 231 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 438 transitions. [2022-12-14 12:37:14,494 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 438 transitions. Word has length 5 [2022-12-14 12:37:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:14,494 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 438 transitions. [2022-12-14 12:37:14,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 438 transitions. [2022-12-14 12:37:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:37:14,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:14,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:37:14,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 12:37:14,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash 721702864, now seen corresponding path program 1 times [2022-12-14 12:37:14,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:14,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967195264] [2022-12-14 12:37:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:14,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:14,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967195264] [2022-12-14 12:37:14,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967195264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:14,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:14,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:14,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887435482] [2022-12-14 12:37:14,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:14,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:14,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:14,597 INFO L87 Difference]: Start difference. First operand 232 states and 438 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:14,638 INFO L93 Difference]: Finished difference Result 216 states and 406 transitions. [2022-12-14 12:37:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:14,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-12-14 12:37:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:14,639 INFO L225 Difference]: With dead ends: 216 [2022-12-14 12:37:14,639 INFO L226 Difference]: Without dead ends: 214 [2022-12-14 12:37:14,640 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:14,640 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:14,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 4 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-12-14 12:37:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2022-12-14 12:37:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 190 states have (on average 2.126315789473684) internal successors, (404), 213 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 404 transitions. [2022-12-14 12:37:14,644 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 404 transitions. Word has length 5 [2022-12-14 12:37:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:14,644 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 404 transitions. [2022-12-14 12:37:14,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:14,644 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 404 transitions. [2022-12-14 12:37:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:37:14,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:14,645 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 12:37:14,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 12:37:14,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:37:14,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash 908078600, now seen corresponding path program 1 times [2022-12-14 12:37:14,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:14,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594562822] [2022-12-14 12:37:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:14,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:37:14,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:37:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:37:14,680 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:37:14,680 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:37:14,681 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (31 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 33 remaining) [2022-12-14 12:37:14,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 33 remaining) [2022-12-14 12:37:14,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (2 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 33 remaining) [2022-12-14 12:37:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 33 remaining) [2022-12-14 12:37:14,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 12:37:14,694 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:37:14,696 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:37:14,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 12:37:14,713 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-14 12:37:14,717 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:37:14,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 225 transitions, 498 flow [2022-12-14 12:37:14,718 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 225 transitions, 498 flow [2022-12-14 12:37:14,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 225 transitions, 498 flow [2022-12-14 12:37:14,833 INFO L130 PetriNetUnfolder]: 149/1325 cut-off events. [2022-12-14 12:37:14,833 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-14 12:37:14,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 1325 events. 149/1325 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7652 event pairs, 1 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 773. Up to 32 conditions per place. [2022-12-14 12:37:14,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 6052 [2022-12-14 12:37:26,715 INFO L134 LiptonReduction]: Checked pairs total: 13029 [2022-12-14 12:37:26,715 INFO L136 LiptonReduction]: Total number of compositions: 252 [2022-12-14 12:37:26,715 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 68 transitions, 184 flow [2022-12-14 12:37:26,833 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5850 states, 5362 states have (on average 3.320402834763148) internal successors, (17804), 5849 states have internal predecessors, (17804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:26,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:37:26,834 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@401ff969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:37:26,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-12-14 12:37:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 5850 states, 5362 states have (on average 3.320402834763148) internal successors, (17804), 5849 states have internal predecessors, (17804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 12:37:26,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:26,843 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 12:37:26,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1249, now seen corresponding path program 1 times [2022-12-14 12:37:26,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:26,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318395154] [2022-12-14 12:37:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:26,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:26,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:26,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318395154] [2022-12-14 12:37:26,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318395154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:26,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:26,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 12:37:26,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056430831] [2022-12-14 12:37:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:26,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:37:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:37:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:37:26,858 INFO L87 Difference]: Start difference. First operand has 5850 states, 5362 states have (on average 3.320402834763148) internal successors, (17804), 5849 states have internal predecessors, (17804), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:26,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:26,936 INFO L93 Difference]: Finished difference Result 5838 states and 17792 transitions. [2022-12-14 12:37:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:37:26,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-12-14 12:37:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:26,964 INFO L225 Difference]: With dead ends: 5838 [2022-12-14 12:37:26,964 INFO L226 Difference]: Without dead ends: 5773 [2022-12-14 12:37:26,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:37:26,964 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:26,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5773 states. [2022-12-14 12:37:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5773 to 5773. [2022-12-14 12:37:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5773 states, 5314 states have (on average 3.3118178396687994) internal successors, (17599), 5772 states have internal predecessors, (17599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 17599 transitions. [2022-12-14 12:37:27,111 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 17599 transitions. Word has length 1 [2022-12-14 12:37:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:27,111 INFO L495 AbstractCegarLoop]: Abstraction has 5773 states and 17599 transitions. [2022-12-14 12:37:27,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 17599 transitions. [2022-12-14 12:37:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:27,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:27,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:27,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 12:37:27,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 39441, now seen corresponding path program 1 times [2022-12-14 12:37:27,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:27,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047562235] [2022-12-14 12:37:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:27,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:27,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:27,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047562235] [2022-12-14 12:37:27,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047562235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:27,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:27,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:27,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388821790] [2022-12-14 12:37:27,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:27,149 INFO L87 Difference]: Start difference. First operand 5773 states and 17599 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:27,243 INFO L93 Difference]: Finished difference Result 5504 states and 16804 transitions. [2022-12-14 12:37:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:27,268 INFO L225 Difference]: With dead ends: 5504 [2022-12-14 12:37:27,268 INFO L226 Difference]: Without dead ends: 5504 [2022-12-14 12:37:27,268 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:27,269 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:27,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2022-12-14 12:37:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5504. [2022-12-14 12:37:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5084 states have (on average 3.305271439811172) internal successors, (16804), 5503 states have internal predecessors, (16804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 16804 transitions. [2022-12-14 12:37:27,425 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 16804 transitions. Word has length 2 [2022-12-14 12:37:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:27,425 INFO L495 AbstractCegarLoop]: Abstraction has 5504 states and 16804 transitions. [2022-12-14 12:37:27,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 16804 transitions. [2022-12-14 12:37:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:27,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:27,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:27,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 12:37:27,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash 39442, now seen corresponding path program 1 times [2022-12-14 12:37:27,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:27,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485806814] [2022-12-14 12:37:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:27,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:27,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485806814] [2022-12-14 12:37:27,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485806814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:27,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:27,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555871728] [2022-12-14 12:37:27,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:27,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:27,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:27,499 INFO L87 Difference]: Start difference. First operand 5504 states and 16804 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:27,597 INFO L93 Difference]: Finished difference Result 5235 states and 16009 transitions. [2022-12-14 12:37:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:27,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:27,619 INFO L225 Difference]: With dead ends: 5235 [2022-12-14 12:37:27,619 INFO L226 Difference]: Without dead ends: 5235 [2022-12-14 12:37:27,619 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:27,620 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:27,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 8 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5235 states. [2022-12-14 12:37:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5235 to 5235. [2022-12-14 12:37:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 4854 states have (on average 3.2981046559538525) internal successors, (16009), 5234 states have internal predecessors, (16009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 16009 transitions. [2022-12-14 12:37:27,787 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 16009 transitions. Word has length 2 [2022-12-14 12:37:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:27,787 INFO L495 AbstractCegarLoop]: Abstraction has 5235 states and 16009 transitions. [2022-12-14 12:37:27,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 16009 transitions. [2022-12-14 12:37:27,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:27,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:27,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:27,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 12:37:27,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 39851, now seen corresponding path program 1 times [2022-12-14 12:37:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:27,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391171335] [2022-12-14 12:37:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:27,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:27,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391171335] [2022-12-14 12:37:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391171335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:27,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604348213] [2022-12-14 12:37:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:27,887 INFO L87 Difference]: Start difference. First operand 5235 states and 16009 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:28,020 INFO L93 Difference]: Finished difference Result 5241 states and 16015 transitions. [2022-12-14 12:37:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:28,037 INFO L225 Difference]: With dead ends: 5241 [2022-12-14 12:37:28,037 INFO L226 Difference]: Without dead ends: 5241 [2022-12-14 12:37:28,038 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:28,038 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:28,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2022-12-14 12:37:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 5235. [2022-12-14 12:37:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 4855 states have (on average 3.297631307929969) internal successors, (16010), 5234 states have internal predecessors, (16010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 16010 transitions. [2022-12-14 12:37:28,170 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 16010 transitions. Word has length 2 [2022-12-14 12:37:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:28,170 INFO L495 AbstractCegarLoop]: Abstraction has 5235 states and 16010 transitions. [2022-12-14 12:37:28,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 16010 transitions. [2022-12-14 12:37:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:37:28,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:28,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:37:28,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 12:37:28,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash 39853, now seen corresponding path program 1 times [2022-12-14 12:37:28,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:28,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614886348] [2022-12-14 12:37:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:28,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:28,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:28,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614886348] [2022-12-14 12:37:28,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614886348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:28,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:28,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687561530] [2022-12-14 12:37:28,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:28,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:28,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:28,234 INFO L87 Difference]: Start difference. First operand 5235 states and 16010 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:28,339 INFO L93 Difference]: Finished difference Result 4966 states and 15214 transitions. [2022-12-14 12:37:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:28,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:37:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:28,363 INFO L225 Difference]: With dead ends: 4966 [2022-12-14 12:37:28,363 INFO L226 Difference]: Without dead ends: 4966 [2022-12-14 12:37:28,363 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:28,364 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:28,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 8 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2022-12-14 12:37:28,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4966. [2022-12-14 12:37:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4625 states have (on average 3.2895135135135134) internal successors, (15214), 4965 states have internal predecessors, (15214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 15214 transitions. [2022-12-14 12:37:28,482 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 15214 transitions. Word has length 2 [2022-12-14 12:37:28,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:28,482 INFO L495 AbstractCegarLoop]: Abstraction has 4966 states and 15214 transitions. [2022-12-14 12:37:28,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 15214 transitions. [2022-12-14 12:37:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:28,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:28,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 12:37:28,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:28,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1236720, now seen corresponding path program 1 times [2022-12-14 12:37:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:28,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396701343] [2022-12-14 12:37:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:28,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:28,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:28,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396701343] [2022-12-14 12:37:28,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396701343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:28,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:28,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:37:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577768990] [2022-12-14 12:37:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:28,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:37:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:37:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:28,563 INFO L87 Difference]: Start difference. First operand 4966 states and 15214 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:28,710 INFO L93 Difference]: Finished difference Result 4969 states and 15217 transitions. [2022-12-14 12:37:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:28,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:28,730 INFO L225 Difference]: With dead ends: 4969 [2022-12-14 12:37:28,730 INFO L226 Difference]: Without dead ends: 4969 [2022-12-14 12:37:28,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:28,731 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:28,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2022-12-14 12:37:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4966. [2022-12-14 12:37:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4626 states have (on average 3.2894509295287504) internal successors, (15217), 4965 states have internal predecessors, (15217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 15217 transitions. [2022-12-14 12:37:28,860 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 15217 transitions. Word has length 3 [2022-12-14 12:37:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:28,860 INFO L495 AbstractCegarLoop]: Abstraction has 4966 states and 15217 transitions. [2022-12-14 12:37:28,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 15217 transitions. [2022-12-14 12:37:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:28,861 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:28,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:28,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 12:37:28,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1236721, now seen corresponding path program 1 times [2022-12-14 12:37:28,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:28,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103728918] [2022-12-14 12:37:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:28,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:28,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103728918] [2022-12-14 12:37:28,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103728918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:28,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:28,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118556317] [2022-12-14 12:37:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:28,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:28,932 INFO L87 Difference]: Start difference. First operand 4966 states and 15217 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:29,012 INFO L93 Difference]: Finished difference Result 4541 states and 13915 transitions. [2022-12-14 12:37:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:29,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:29,034 INFO L225 Difference]: With dead ends: 4541 [2022-12-14 12:37:29,034 INFO L226 Difference]: Without dead ends: 4541 [2022-12-14 12:37:29,034 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:29,035 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:29,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 8 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2022-12-14 12:37:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2022-12-14 12:37:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4258 states have (on average 3.2679661813057774) internal successors, (13915), 4540 states have internal predecessors, (13915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 13915 transitions. [2022-12-14 12:37:29,150 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 13915 transitions. Word has length 3 [2022-12-14 12:37:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:29,150 INFO L495 AbstractCegarLoop]: Abstraction has 4541 states and 13915 transitions. [2022-12-14 12:37:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 13915 transitions. [2022-12-14 12:37:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:29,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:29,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:29,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 12:37:29,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1236420, now seen corresponding path program 1 times [2022-12-14 12:37:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:29,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382109890] [2022-12-14 12:37:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:29,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:29,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:29,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382109890] [2022-12-14 12:37:29,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382109890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:29,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:29,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:37:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519547513] [2022-12-14 12:37:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:37:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:37:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:29,287 INFO L87 Difference]: Start difference. First operand 4541 states and 13915 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:29,359 INFO L93 Difference]: Finished difference Result 4116 states and 12613 transitions. [2022-12-14 12:37:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:29,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:29,371 INFO L225 Difference]: With dead ends: 4116 [2022-12-14 12:37:29,371 INFO L226 Difference]: Without dead ends: 4116 [2022-12-14 12:37:29,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:29,371 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:29,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:29,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2022-12-14 12:37:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 4116. [2022-12-14 12:37:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4116 states, 3890 states have (on average 3.2424164524421593) internal successors, (12613), 4115 states have internal predecessors, (12613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4116 states to 4116 states and 12613 transitions. [2022-12-14 12:37:29,442 INFO L78 Accepts]: Start accepts. Automaton has 4116 states and 12613 transitions. Word has length 3 [2022-12-14 12:37:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:29,442 INFO L495 AbstractCegarLoop]: Abstraction has 4116 states and 12613 transitions. [2022-12-14 12:37:29,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4116 states and 12613 transitions. [2022-12-14 12:37:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:37:29,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:29,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:37:29,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 12:37:29,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:29,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1236421, now seen corresponding path program 1 times [2022-12-14 12:37:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:29,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235314108] [2022-12-14 12:37:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:29,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235314108] [2022-12-14 12:37:29,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235314108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:29,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:29,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:37:29,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93343302] [2022-12-14 12:37:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:29,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:37:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:37:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:29,588 INFO L87 Difference]: Start difference. First operand 4116 states and 12613 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:29,659 INFO L93 Difference]: Finished difference Result 3691 states and 11311 transitions. [2022-12-14 12:37:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:29,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:37:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:29,675 INFO L225 Difference]: With dead ends: 3691 [2022-12-14 12:37:29,675 INFO L226 Difference]: Without dead ends: 3691 [2022-12-14 12:37:29,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:37:29,676 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:29,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:37:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2022-12-14 12:37:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2022-12-14 12:37:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3522 states have (on average 3.21152754116979) internal successors, (11311), 3690 states have internal predecessors, (11311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 11311 transitions. [2022-12-14 12:37:29,743 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 11311 transitions. Word has length 3 [2022-12-14 12:37:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:29,743 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 11311 transitions. [2022-12-14 12:37:29,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 11311 transitions. [2022-12-14 12:37:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:37:29,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:29,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:37:29,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 12:37:29,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1188518001, now seen corresponding path program 1 times [2022-12-14 12:37:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:29,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930115902] [2022-12-14 12:37:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:29,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:29,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930115902] [2022-12-14 12:37:29,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930115902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:29,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:29,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:37:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070963769] [2022-12-14 12:37:29,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:29,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:37:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:37:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:37:29,795 INFO L87 Difference]: Start difference. First operand 3691 states and 11311 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:29,887 INFO L93 Difference]: Finished difference Result 3696 states and 11034 transitions. [2022-12-14 12:37:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-12-14 12:37:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:29,900 INFO L225 Difference]: With dead ends: 3696 [2022-12-14 12:37:29,900 INFO L226 Difference]: Without dead ends: 3691 [2022-12-14 12:37:29,900 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:37:29,900 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:29,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2022-12-14 12:37:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3613. [2022-12-14 12:37:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3451 states have (on average 3.15879455230368) internal successors, (10901), 3612 states have internal predecessors, (10901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 10901 transitions. [2022-12-14 12:37:29,988 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 10901 transitions. Word has length 5 [2022-12-14 12:37:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:29,988 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 10901 transitions. [2022-12-14 12:37:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 10901 transitions. [2022-12-14 12:37:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:37:29,988 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:29,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:37:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 12:37:29,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1188502997, now seen corresponding path program 1 times [2022-12-14 12:37:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:29,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037601149] [2022-12-14 12:37:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:30,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:30,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037601149] [2022-12-14 12:37:30,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037601149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:30,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:37:30,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:37:30,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61400382] [2022-12-14 12:37:30,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:30,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:37:30,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:30,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:37:30,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:37:30,151 INFO L87 Difference]: Start difference. First operand 3613 states and 10901 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:30,231 INFO L93 Difference]: Finished difference Result 3354 states and 10136 transitions. [2022-12-14 12:37:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:37:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-12-14 12:37:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:30,244 INFO L225 Difference]: With dead ends: 3354 [2022-12-14 12:37:30,244 INFO L226 Difference]: Without dead ends: 3352 [2022-12-14 12:37:30,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:37:30,245 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:30,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 6 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-12-14 12:37:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3352. [2022-12-14 12:37:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 3226 states have (on average 3.1413515189088654) internal successors, (10134), 3351 states have internal predecessors, (10134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 10134 transitions. [2022-12-14 12:37:30,324 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 10134 transitions. Word has length 5 [2022-12-14 12:37:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:30,324 INFO L495 AbstractCegarLoop]: Abstraction has 3352 states and 10134 transitions. [2022-12-14 12:37:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 10134 transitions. [2022-12-14 12:37:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:37:30,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:30,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:37:30,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 12:37:30,325 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1821012715, now seen corresponding path program 1 times [2022-12-14 12:37:30,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870960112] [2022-12-14 12:37:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:30,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:30,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870960112] [2022-12-14 12:37:30,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870960112] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:37:30,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303178871] [2022-12-14 12:37:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:37:30,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:30,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:37:30,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:37:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:30,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 12:37:30,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:37:30,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:37:30,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-14 12:37:30,636 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 12:37:30,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 12:37:30,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 12:37:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:30,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:37:30,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303178871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:30,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:37:30,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-14 12:37:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585472592] [2022-12-14 12:37:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:37:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:37:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:37:30,727 INFO L87 Difference]: Start difference. First operand 3352 states and 10134 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:30,884 INFO L93 Difference]: Finished difference Result 3476 states and 10352 transitions. [2022-12-14 12:37:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:37:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 12:37:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:30,897 INFO L225 Difference]: With dead ends: 3476 [2022-12-14 12:37:30,897 INFO L226 Difference]: Without dead ends: 3476 [2022-12-14 12:37:30,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:37:30,897 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:30,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 22 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:37:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-12-14 12:37:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3385. [2022-12-14 12:37:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3261 states have (on average 3.1281815394050905) internal successors, (10201), 3384 states have internal predecessors, (10201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 10201 transitions. [2022-12-14 12:37:30,979 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 10201 transitions. Word has length 6 [2022-12-14 12:37:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:30,979 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 10201 transitions. [2022-12-14 12:37:30,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 10201 transitions. [2022-12-14 12:37:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:37:30,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:30,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:37:30,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:37:31,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 12:37:31,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:31,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash -295739415, now seen corresponding path program 1 times [2022-12-14 12:37:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:31,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003318254] [2022-12-14 12:37:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:31,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:31,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003318254] [2022-12-14 12:37:31,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003318254] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:37:31,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433226288] [2022-12-14 12:37:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:37:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:31,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:37:31,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:37:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:31,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 12:37:31,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:37:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:37:32,099 INFO L321 Elim1Store]: treesize reduction 411, result has 13.3 percent of original size [2022-12-14 12:37:32,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 11 case distinctions, treesize of input 417 treesize of output 436 [2022-12-14 12:37:32,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:37:32,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-14 12:37:32,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 12:37:32,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 12:37:32,733 INFO L321 Elim1Store]: treesize reduction 221, result has 23.5 percent of original size [2022-12-14 12:37:32,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 55 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 303 treesize of output 322 [2022-12-14 12:37:33,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:37:33,160 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:37:33,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 56 [2022-12-14 12:37:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:33,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:37:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:33,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433226288] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:37:33,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1314898228] [2022-12-14 12:37:33,840 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-12-14 12:37:33,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:37:33,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-12-14 12:37:33,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803724848] [2022-12-14 12:37:33,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:37:33,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 12:37:33,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 12:37:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:37:33,841 INFO L87 Difference]: Start difference. First operand 3385 states and 10201 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:35,252 INFO L93 Difference]: Finished difference Result 3427 states and 10240 transitions. [2022-12-14 12:37:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 12:37:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 12:37:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:35,261 INFO L225 Difference]: With dead ends: 3427 [2022-12-14 12:37:35,261 INFO L226 Difference]: Without dead ends: 3389 [2022-12-14 12:37:35,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-12-14 12:37:35,261 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 192 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:35,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 63 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:37:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-12-14 12:37:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3375. [2022-12-14 12:37:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3253 states have (on average 3.126037503842607) internal successors, (10169), 3374 states have internal predecessors, (10169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 10169 transitions. [2022-12-14 12:37:35,317 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 10169 transitions. Word has length 7 [2022-12-14 12:37:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:35,317 INFO L495 AbstractCegarLoop]: Abstraction has 3375 states and 10169 transitions. [2022-12-14 12:37:35,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 10169 transitions. [2022-12-14 12:37:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:37:35,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:35,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:37:35,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:37:35,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 12:37:35,519 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash -616817978, now seen corresponding path program 1 times [2022-12-14 12:37:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:35,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879377520] [2022-12-14 12:37:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:35,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:35,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:35,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879377520] [2022-12-14 12:37:35,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879377520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:37:35,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664684265] [2022-12-14 12:37:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:35,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:37:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:35,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:37:35,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:37:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:35,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 12:37:35,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:37:36,242 INFO L321 Elim1Store]: treesize reduction 293, result has 27.7 percent of original size [2022-12-14 12:37:36,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 401 treesize of output 464 [2022-12-14 12:37:36,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2022-12-14 12:37:36,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 12:37:36,538 INFO L321 Elim1Store]: treesize reduction 48, result has 46.1 percent of original size [2022-12-14 12:37:36,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 11 case distinctions, treesize of input 61 treesize of output 77 [2022-12-14 12:37:36,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-12-14 12:37:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:37,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:37:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:37,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664684265] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:37:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [375161561] [2022-12-14 12:37:37,324 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-12-14 12:37:37,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:37:37,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2022-12-14 12:37:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293319964] [2022-12-14 12:37:37,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:37:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:37:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:37:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=89, Unknown=1, NotChecked=0, Total=132 [2022-12-14 12:37:37,326 INFO L87 Difference]: Start difference. First operand 3375 states and 10169 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:37,812 INFO L93 Difference]: Finished difference Result 3431 states and 10251 transitions. [2022-12-14 12:37:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:37:37,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 12:37:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:37,819 INFO L225 Difference]: With dead ends: 3431 [2022-12-14 12:37:37,819 INFO L226 Difference]: Without dead ends: 3318 [2022-12-14 12:37:37,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=115, Unknown=1, NotChecked=0, Total=182 [2022-12-14 12:37:37,820 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 184 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:37,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 28 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:37:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2022-12-14 12:37:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 3318. [2022-12-14 12:37:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3198 states have (on average 3.1388367729831144) internal successors, (10038), 3317 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 10038 transitions. [2022-12-14 12:37:37,868 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 10038 transitions. Word has length 7 [2022-12-14 12:37:37,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:37,868 INFO L495 AbstractCegarLoop]: Abstraction has 3318 states and 10038 transitions. [2022-12-14 12:37:37,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 10038 transitions. [2022-12-14 12:37:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:37:37,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:37,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:37:37,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 12:37:38,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 12:37:38,070 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -577986830, now seen corresponding path program 1 times [2022-12-14 12:37:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:38,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120309651] [2022-12-14 12:37:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:38,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:37:38,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120309651] [2022-12-14 12:37:38,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120309651] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:37:38,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137702557] [2022-12-14 12:37:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:38,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:37:38,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:38,162 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:37:38,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:37:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:37:38,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 12:37:38,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:37:38,267 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-14 12:37:38,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-12-14 12:37:38,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 12:37:38,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 12:37:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:37:38,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:37:38,336 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_418 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_418) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) 0)) is different from false [2022-12-14 12:37:38,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-12-14 12:37:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-14 12:37:38,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137702557] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:37:38,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1760374325] [2022-12-14 12:37:38,358 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java: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) [2022-12-14 12:37:38,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:37:38,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-12-14 12:37:38,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821133407] [2022-12-14 12:37:38,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:37:38,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 12:37:38,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 12:37:38,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2022-12-14 12:37:38,359 INFO L87 Difference]: Start difference. First operand 3318 states and 10038 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:37:38,568 INFO L93 Difference]: Finished difference Result 3290 states and 9983 transitions. [2022-12-14 12:37:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:37:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:37:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:37:38,578 INFO L225 Difference]: With dead ends: 3290 [2022-12-14 12:37:38,578 INFO L226 Difference]: Without dead ends: 3284 [2022-12-14 12:37:38,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=124, Unknown=1, NotChecked=24, Total=210 [2022-12-14 12:37:38,579 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:37:38,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 285 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-12-14 12:37:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-12-14 12:37:38,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 3284. [2022-12-14 12:37:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 3164 states have (on average 3.151706700379267) internal successors, (9972), 3283 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 9972 transitions. [2022-12-14 12:37:38,661 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 9972 transitions. Word has length 8 [2022-12-14 12:37:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:37:38,661 INFO L495 AbstractCegarLoop]: Abstraction has 3284 states and 9972 transitions. [2022-12-14 12:37:38,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:37:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 9972 transitions. [2022-12-14 12:37:38,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:37:38,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:37:38,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:37:38,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:37:38,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 12:37:38,863 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-14 12:37:38,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:37:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1130551261, now seen corresponding path program 1 times [2022-12-14 12:37:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:37:38,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500603399] [2022-12-14 12:37:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:37:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:37:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:37:38,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:37:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:37:38,945 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:37:38,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:37:38,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (33 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (32 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 34 remaining) [2022-12-14 12:37:38,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 34 remaining) [2022-12-14 12:37:38,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 34 remaining) [2022-12-14 12:37:38,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 34 remaining) [2022-12-14 12:37:38,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (3 of 34 remaining) [2022-12-14 12:37:38,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 34 remaining) [2022-12-14 12:37:38,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 34 remaining) [2022-12-14 12:37:38,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 34 remaining) [2022-12-14 12:37:38,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 12:37:38,948 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:37:38,951 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-12-14 12:37:38,951 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:37:38,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:37:38 BasicIcfg [2022-12-14 12:37:38,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:37:38,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:37:38,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:37:38,984 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:37:38,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:37:01" (3/4) ... [2022-12-14 12:37:38,987 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 12:37:38,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:37:38,987 INFO L158 Benchmark]: Toolchain (without parser) took 38086.65ms. Allocated memory was 151.0MB in the beginning and 998.2MB in the end (delta: 847.2MB). Free memory was 114.8MB in the beginning and 749.2MB in the end (delta: -634.4MB). Peak memory consumption was 214.4MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,987 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory was 120.2MB in the beginning and 120.0MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.51ms. Allocated memory is still 151.0MB. Free memory was 114.8MB in the beginning and 75.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.03ms. Allocated memory is still 151.0MB. Free memory was 75.0MB in the beginning and 72.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,988 INFO L158 Benchmark]: Boogie Preprocessor took 21.35ms. Allocated memory is still 151.0MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,988 INFO L158 Benchmark]: RCFGBuilder took 468.93ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 70.3MB in the beginning and 148.2MB in the end (delta: -77.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,989 INFO L158 Benchmark]: TraceAbstraction took 36994.40ms. Allocated memory was 184.5MB in the beginning and 998.2MB in the end (delta: 813.7MB). Free memory was 147.2MB in the beginning and 749.2MB in the end (delta: -602.0MB). Peak memory consumption was 212.7MB. Max. memory is 16.1GB. [2022-12-14 12:37:38,989 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 998.2MB. Free memory is still 749.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:37:38,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory was 120.2MB in the beginning and 120.0MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.51ms. Allocated memory is still 151.0MB. Free memory was 114.8MB in the beginning and 75.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.03ms. Allocated memory is still 151.0MB. Free memory was 75.0MB in the beginning and 72.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.35ms. Allocated memory is still 151.0MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.93ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 70.3MB in the beginning and 148.2MB in the end (delta: -77.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * TraceAbstraction took 36994.40ms. Allocated memory was 184.5MB in the beginning and 998.2MB in the end (delta: 813.7MB). Free memory was 147.2MB in the beginning and 749.2MB in the end (delta: -602.0MB). Peak memory consumption was 212.7MB. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 998.2MB. Free memory is still 749.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5s, 193 PlacesBefore, 57 PlacesAfterwards, 205 TransitionsBefore, 56 TransitionsAfterwards, 2694 CoEnabledTransitionPairs, 8 FixpointIterations, 102 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 27 ConcurrentYvCompositions, 13 ChoiceCompositions, 236 TotalNumberOfCompositions, 5004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4049, independent: 4003, independent conditional: 0, independent unconditional: 4003, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2167, independent: 2150, independent conditional: 0, independent unconditional: 2150, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2167, independent: 2150, independent conditional: 0, independent unconditional: 2150, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4049, independent: 1853, independent conditional: 0, independent unconditional: 1853, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 2167, unknown conditional: 0, unknown unconditional: 2167] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.0s, 212 PlacesBefore, 69 PlacesAfterwards, 225 TransitionsBefore, 68 TransitionsAfterwards, 6052 CoEnabledTransitionPairs, 8 FixpointIterations, 105 TrivialSequentialCompositions, 105 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 27 ConcurrentYvCompositions, 14 ChoiceCompositions, 252 TotalNumberOfCompositions, 13029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8928, independent: 8836, independent conditional: 0, independent unconditional: 8836, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4412, independent: 4386, independent conditional: 0, independent unconditional: 4386, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4412, independent: 4382, independent conditional: 0, independent unconditional: 4382, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8928, independent: 4450, independent conditional: 0, independent unconditional: 4450, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 4412, unknown conditional: 0, unknown unconditional: 4412] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1287]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1287. Possible FailurePath: [L1227] 0 static int iSet = 4; [L1228] 0 static int iCheck = 1; [L1229] 0 static int a = 0; [L1230] 0 static int b = 0; [L1237] 0 int i, err; [L1238] COND TRUE 0 argc != 1 [L1239] COND FALSE 0 !(argc != 3) [L1247] EXPR 0 \read(iSet) [L1247] 0 iSet > 100000 || iCheck > 100000 [L1247] EXPR 0 \read(iCheck) [L1247] 0 iSet > 100000 || iCheck > 100000 [L1247] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1250] EXPR 0 \read(iSet) [L1250] 0 pthread_t setPool[iSet]; [L1251] EXPR 0 \read(iCheck) [L1251] 0 pthread_t checkPool[iCheck]; [L1252] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, i=0, iCheck={11:0}, iSet={10:0}, setPool={15:0}] [L1252] EXPR 0 \read(iSet) [L1252] COND TRUE 0 i < iSet [L1253] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-2, setPool={15:0}] [L1253] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=0, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-2, setPool={15:0}] [L1280] 1 a = 1 VAL [a=1, b=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}] [L1253] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1252] 0 i++ VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=1, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=51, i=1, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, setPool={15:0}] [L1252] EXPR 0 \read(iSet) [L1252] COND FALSE 0 !(i < iSet) [L1258] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=1, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=51, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, setPool={15:0}] [L1258] EXPR 0 \read(iCheck) [L1258] COND TRUE 0 i < iCheck [L1259-L1260] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=1, \read(iSet)=1, a=1, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=51, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=-1, setPool={15:0}] [L1285] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1287] 2 reach_error() VAL [a=1, b=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1236]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1253]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1259]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 204 locations, 33 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 320 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 710 IncrementalHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 70 mSDtfsCounter, 710 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 32 ConstructedInterpolants, 1 QuantifiedInterpolants, 580 SizeOfPredicates, 2 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 219 locations, 34 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 852 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 852 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 54 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1761 IncrementalHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 117 mSDtfsCounter, 1761 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5850occurred in iteration=0, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 192 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 87 ConstructedInterpolants, 10 QuantifiedInterpolants, 3254 SizeOfPredicates, 45 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 22 InterpolantComputations, 12 PerfectInterpolantSequences, 1/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 12:37:39,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:37:40,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:37:40,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:37:40,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:37:40,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:37:40,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:37:40,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:37:40,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:37:40,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:37:40,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:37:40,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:37:40,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:37:40,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:37:40,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:37:40,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:37:40,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:37:40,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:37:40,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:37:40,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:37:40,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:37:40,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:37:40,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:37:40,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:37:40,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:37:40,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:37:40,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:37:40,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:37:40,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:37:40,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:37:40,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:37:40,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:37:40,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:37:40,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:37:40,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:37:40,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:37:40,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:37:40,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:37:40,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:37:40,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:37:40,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:37:40,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:37:40,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 12:37:40,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:37:40,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:37:40,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:37:40,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:37:40,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:37:40,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:37:40,665 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:37:40,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:37:40,666 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:37:40,666 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:37:40,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:37:40,666 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:37:40,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:37:40,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:37:40,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:37:40,667 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:37:40,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:37:40,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:37:40,668 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:37:40,669 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:37:40,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:37:40,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:37:40,669 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 [2022-12-14 12:37:40,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:37:40,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:37:40,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:37:40,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:37:40,894 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:37:40,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/reorder_5.i [2022-12-14 12:37:43,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:37:43,672 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:37:43,672 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/sv-benchmarks/c/pthread/reorder_5.i [2022-12-14 12:37:43,683 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data/77ba20d14/3a09f903372e43c68771271c0c39557d/FLAG4226ad176 [2022-12-14 12:37:44,010 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/data/77ba20d14/3a09f903372e43c68771271c0c39557d [2022-12-14 12:37:44,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:37:44,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:37:44,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:37:44,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:37:44,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:37:44,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db1cf89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44, skipping insertion in model container [2022-12-14 12:37:44,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:37:44,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:37:44,644 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,652 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,655 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,657 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,658 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,661 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,662 WARN L237 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_9e0299ba-2820-43f9-a4f0-f1542a27be4a/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-14 12:37:44,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:37:44,675 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:37:44,715 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,718 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,720 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,722 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,723 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,725 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 12:37:44,726 WARN L237 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_9e0299ba-2820-43f9-a4f0-f1542a27be4a/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-14 12:37:44,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:37:44,804 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:37:44,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44 WrapperNode [2022-12-14 12:37:44,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:37:44,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:37:44,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:37:44,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:37:44,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,859 INFO L138 Inliner]: procedures = 373, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2022-12-14 12:37:44,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:37:44,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:37:44,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:37:44,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:37:44,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:37:44,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:37:44,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:37:44,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:37:44,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (1/1) ... [2022-12-14 12:37:44,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:37:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:37:44,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:37:44,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:37:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-14 12:37:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:37:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-14 12:37:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-14 12:37:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:37:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:37:44,957 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 12:37:45,086 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:37:45,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:37:45,428 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:37:45,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:37:45,435 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:37:45,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:37:45 BoogieIcfgContainer [2022-12-14 12:37:45,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:37:45,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:37:45,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:37:45,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:37:45,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:37:44" (1/3) ... [2022-12-14 12:37:45,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8179b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:37:45, skipping insertion in model container [2022-12-14 12:37:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:37:44" (2/3) ... [2022-12-14 12:37:45,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8179b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:37:45, skipping insertion in model container [2022-12-14 12:37:45,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:37:45" (3/3) ... [2022-12-14 12:37:45,446 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-12-14 12:37:45,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:37:45,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-14 12:37:45,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:37:45,507 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 12:37:45,531 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:37:45,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 204 transitions, 430 flow [2022-12-14 12:37:45,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 204 transitions, 430 flow [2022-12-14 12:37:45,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 204 transitions, 430 flow [2022-12-14 12:37:45,618 INFO L130 PetriNetUnfolder]: 37/429 cut-off events. [2022-12-14 12:37:45,619 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-14 12:37:45,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 429 events. 37/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1717 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2022-12-14 12:37:45,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 2694 [2022-12-14 12:38:31,096 WARN L233 SmtUtils]: Spent 22.37s on a formula simplification. DAG size of input: 203 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 12:38:43,086 WARN L233 SmtUtils]: Spent 11.99s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 12:38:46,663 INFO L134 LiptonReduction]: Checked pairs total: 4994 [2022-12-14 12:38:46,664 INFO L136 LiptonReduction]: Total number of compositions: 245 [2022-12-14 12:38:46,671 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 56 transitions, 134 flow [2022-12-14 12:38:46,698 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 414 states, 302 states have (on average 2.6456953642384105) internal successors, (799), 413 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:46,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:38:46,717 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7fed124c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:38:46,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-14 12:38:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 302 states have (on average 2.6456953642384105) internal successors, (799), 413 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 12:38:46,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:38:46,722 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 12:38:46,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:38:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:38:46,726 INFO L85 PathProgramCache]: Analyzing trace with hash 767, now seen corresponding path program 1 times [2022-12-14 12:38:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:38:46,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400793355] [2022-12-14 12:38:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:38:46,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:38:46,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:38:46,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:38:46,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 12:38:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:38:46,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 12:38:46,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:38:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:38:46,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:38:46,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:38:46,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400793355] [2022-12-14 12:38:46,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400793355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:38:46,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:38:46,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 12:38:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449050675] [2022-12-14 12:38:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:38:46,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:38:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:38:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:38:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:38:46,845 INFO L87 Difference]: Start difference. First operand has 414 states, 302 states have (on average 2.6456953642384105) internal successors, (799), 413 states have internal predecessors, (799), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:38:46,975 INFO L93 Difference]: Finished difference Result 402 states and 787 transitions. [2022-12-14 12:38:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:38:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-12-14 12:38:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:38:46,986 INFO L225 Difference]: With dead ends: 402 [2022-12-14 12:38:46,987 INFO L226 Difference]: Without dead ends: 393 [2022-12-14 12:38:46,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:38:46,989 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:38:46,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:38:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-12-14 12:38:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-12-14 12:38:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 298 states have (on average 2.5838926174496644) internal successors, (770), 392 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 770 transitions. [2022-12-14 12:38:47,041 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 770 transitions. Word has length 1 [2022-12-14 12:38:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:38:47,042 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 770 transitions. [2022-12-14 12:38:47,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 770 transitions. [2022-12-14 12:38:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:38:47,042 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:38:47,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:38:47,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:38:47,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:38:47,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:38:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:38:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash 23975, now seen corresponding path program 1 times [2022-12-14 12:38:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:38:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521190932] [2022-12-14 12:38:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:38:47,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:38:47,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:38:47,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:38:47,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 12:38:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:38:47,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:38:47,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:38:47,469 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-12-14 12:38:47,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-12-14 12:38:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:38:47,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:38:47,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:38:47,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521190932] [2022-12-14 12:38:47,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521190932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:38:47,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:38:47,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:38:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410953009] [2022-12-14 12:38:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:38:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:38:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:38:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:38:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:38:47,518 INFO L87 Difference]: Start difference. First operand 393 states and 770 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:38:47,678 INFO L93 Difference]: Finished difference Result 373 states and 732 transitions. [2022-12-14 12:38:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:38:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-12-14 12:38:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:38:47,681 INFO L225 Difference]: With dead ends: 373 [2022-12-14 12:38:47,681 INFO L226 Difference]: Without dead ends: 373 [2022-12-14 12:38:47,681 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:38:47,682 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:38:47,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:38:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-12-14 12:38:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-12-14 12:38:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 2.5594405594405596) internal successors, (732), 372 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 732 transitions. [2022-12-14 12:38:47,696 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 732 transitions. Word has length 2 [2022-12-14 12:38:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:38:47,697 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 732 transitions. [2022-12-14 12:38:47,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:38:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 732 transitions. [2022-12-14 12:38:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:38:47,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:38:47,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:38:47,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 12:38:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:38:47,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-14 12:38:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:38:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash 23976, now seen corresponding path program 1 times [2022-12-14 12:38:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:38:47,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91857594] [2022-12-14 12:38:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:38:47,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:38:47,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:38:47,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:38:47,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e0299ba-2820-43f9-a4f0-f1542a27be4a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 12:38:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:38:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:38:48,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:38:48,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:38:48,978 INFO L321 Elim1Store]: treesize reduction 520, result has 10.5 percent of original size [2022-12-14 12:38:48,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 56 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 468 treesize of output 483 [2022-12-14 12:38:49,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-12-14 12:38:49,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 12:38:49,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 12:38:49,436 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-12-14 12:38:49,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 354 treesize of output 326 [2022-12-14 12:38:51,623 INFO L321 Elim1Store]: treesize reduction 110, result has 83.1 percent of original size [2022-12-14 12:38:51,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 55 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 65 case distinctions, treesize of input 335 treesize of output 821