./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/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_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 --- 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 05:16:53,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:16:53,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:16:53,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:16:53,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:16:53,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:16:53,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:16:53,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:16:53,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:16:53,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:16:53,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:16:53,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:16:53,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:16:53,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:16:53,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:16:53,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:16:53,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:16:53,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:16:53,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:16:53,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:16:53,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:16:53,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:16:53,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:16:53,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:16:53,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:16:53,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:16:53,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:16:53,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:16:53,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:16:53,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:16:53,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:16:53,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:16:53,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:16:53,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:16:53,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:16:53,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:16:53,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:16:53,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:16:53,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:16:53,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:16:53,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:16:53,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 05:16:53,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:16:53,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:16:53,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:16:53,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:16:53,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:16:53,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:16:53,632 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:16:53,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:16:53,632 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:16:53,632 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:16:53,633 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:16:53,633 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:16:53,633 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:16:53,633 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:16:53,633 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:16:53,633 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:16:53,634 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:16:53,634 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:16:53,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:16:53,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:16:53,635 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:16:53,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:16:53,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:16:53,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:16:53,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:16:53,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:16:53,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:16:53,636 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 05:16:53,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:16:53,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:16:53,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:16:53,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:16:53,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:16:53,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:16:53,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:16:53,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:16:53,638 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:16:53,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:16:53,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:16:53,638 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:16:53,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:16:53,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:16:53,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:16:53,639 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_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 [2022-12-14 05:16:53,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:16:53,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:16:53,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:16:53,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:16:53,825 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:16:53,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/reorder_2.i [2022-12-14 05:16:56,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:16:56,691 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:16:56,692 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/sv-benchmarks/c/pthread/reorder_2.i [2022-12-14 05:16:56,703 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/data/9591fd5bb/e1f0671fdfd04679b64b94cbdea5c3f7/FLAG4846a5aec [2022-12-14 05:16:56,714 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/data/9591fd5bb/e1f0671fdfd04679b64b94cbdea5c3f7 [2022-12-14 05:16:56,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:16:56,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:16:56,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:16:56,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:16:56,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:16:56,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:16:56" (1/1) ... [2022-12-14 05:16:56,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3fa656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:56, skipping insertion in model container [2022-12-14 05:16:56,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:16:56" (1/1) ... [2022-12-14 05:16:56,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:16:56,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:16:57,159 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,170 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,173 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,176 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,177 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,181 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,182 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_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2022-12-14 05:16:57,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:16:57,190 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:16:57,230 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,236 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,238 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,240 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,242 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,244 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 05:16:57,245 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_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2022-12-14 05:16:57,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:16:57,310 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:16:57,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57 WrapperNode [2022-12-14 05:16:57,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:16:57,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:16:57,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:16:57,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:16:57,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,351 INFO L138 Inliner]: procedures = 370, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 222 [2022-12-14 05:16:57,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:16:57,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:16:57,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:16:57,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:16:57,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:16:57,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:16:57,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:16:57,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:16:57,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (1/1) ... [2022-12-14 05:16:57,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:16:57,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:57,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:16:57,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37dd3b3-912d-4d9f-b2dd-d758f7167be1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-14 05:16:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-14 05:16:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-14 05:16:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:16:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:16:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:16:57,440 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 05:16:57,545 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:16:57,547 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:16:57,904 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:16:57,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:16:57,913 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 05:16:57,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:16:57 BoogieIcfgContainer [2022-12-14 05:16:57,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:16:57,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:16:57,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:16:57,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:16:57,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:16:56" (1/3) ... [2022-12-14 05:16:57,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ec663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:16:57, skipping insertion in model container [2022-12-14 05:16:57,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:16:57" (2/3) ... [2022-12-14 05:16:57,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ec663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:16:57, skipping insertion in model container [2022-12-14 05:16:57,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:16:57" (3/3) ... [2022-12-14 05:16:57,922 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-12-14 05:16:57,929 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 05:16:57,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:16:57,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-14 05:16:57,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 05:16:58,000 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 05:16:58,026 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 05:16:58,036 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 305 transitions, 632 flow [2022-12-14 05:16:58,038 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 305 transitions, 632 flow [2022-12-14 05:16:58,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 305 transitions, 632 flow [2022-12-14 05:16:58,159 INFO L130 PetriNetUnfolder]: 43/624 cut-off events. [2022-12-14 05:16:58,159 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-14 05:16:58,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 624 events. 43/624 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2647 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 339. Up to 8 conditions per place. [2022-12-14 05:16:58,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 14204 [2022-12-14 05:17:38,770 WARN L233 SmtUtils]: Spent 19.70s on a formula simplification. DAG size of input: 251 DAG size of output: 240 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:17:48,751 WARN L233 SmtUtils]: Spent 9.98s on a formula simplification that was a NOOP. DAG size: 240 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:18:03,223 WARN L233 SmtUtils]: Spent 14.47s on a formula simplification. DAG size of input: 264 DAG size of output: 253 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:18:11,062 WARN L233 SmtUtils]: Spent 7.84s on a formula simplification that was a NOOP. DAG size: 253 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:18:11,179 INFO L134 LiptonReduction]: Checked pairs total: 35535 [2022-12-14 05:18:11,179 INFO L136 LiptonReduction]: Total number of compositions: 340 [2022-12-14 05:18:11,185 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 69 transitions, 160 flow [2022-12-14 05:18:11,272 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3208 states, 2920 states have (on average 3.022945205479452) internal successors, (8827), 3207 states have internal predecessors, (8827), 0 states have call successors, (0), 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 05:18:11,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:18:11,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ededba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:18:11,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-14 05:18:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 3208 states, 2920 states have (on average 3.022945205479452) internal successors, (8827), 3207 states have internal predecessors, (8827), 0 states have call successors, (0), 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 05:18:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 05:18:11,299 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:11,300 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 05:18:11,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-12-14 05:18:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1119, now seen corresponding path program 1 times [2022-12-14 05:18:11,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:11,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18687923] [2022-12-14 05:18:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:11,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:11,397 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 05:18:11,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:18:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18687923] [2022-12-14 05:18:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18687923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:18:11,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:18:11,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 05:18:11,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366953655] [2022-12-14 05:18:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:18:11,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:18:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:18:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:18:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:18:11,425 INFO L87 Difference]: Start difference. First operand has 3208 states, 2920 states have (on average 3.022945205479452) internal successors, (8827), 3207 states have internal predecessors, (8827), 0 states have call successors, (0), 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 05:18:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:18:11,543 INFO L93 Difference]: Finished difference Result 1840 states and 5015 transitions. [2022-12-14 05:18:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:18:11,545 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 05:18:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:18:11,563 INFO L225 Difference]: With dead ends: 1840 [2022-12-14 05:18:11,563 INFO L226 Difference]: Without dead ends: 1781 [2022-12-14 05:18:11,563 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 05:18:11,565 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:18:11,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:18:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-12-14 05:18:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1781. [2022-12-14 05:18:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1710 states have (on average 2.8362573099415203) internal successors, (4850), 1780 states have internal predecessors, (4850), 0 states have call successors, (0), 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 05:18:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 4850 transitions. [2022-12-14 05:18:11,646 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 4850 transitions. Word has length 1 [2022-12-14 05:18:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:18:11,647 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 4850 transitions. [2022-12-14 05:18:11,647 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 05:18:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 4850 transitions. [2022-12-14 05:18:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:18:11,647 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:11,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:18:11,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:18:11,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-12-14 05:18:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1413133121, now seen corresponding path program 1 times [2022-12-14 05:18:11,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:11,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516544800] [2022-12-14 05:18:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:11,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:11,805 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 05:18:11,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:18:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516544800] [2022-12-14 05:18:11,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516544800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:18:11,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:18:11,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:18:11,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238839664] [2022-12-14 05:18:11,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:18:11,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:18:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:18:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:18:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:18:11,808 INFO L87 Difference]: Start difference. First operand 1781 states and 4850 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 05:18:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:18:11,994 INFO L93 Difference]: Finished difference Result 2839 states and 7747 transitions. [2022-12-14 05:18:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:18:11,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 05:18:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:18:12,005 INFO L225 Difference]: With dead ends: 2839 [2022-12-14 05:18:12,005 INFO L226 Difference]: Without dead ends: 2839 [2022-12-14 05:18:12,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:18:12,006 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:18:12,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 30 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:18:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2022-12-14 05:18:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 1881. [2022-12-14 05:18:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1812 states have (on average 2.8543046357615895) internal successors, (5172), 1880 states have internal predecessors, (5172), 0 states have call successors, (0), 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 05:18:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 5172 transitions. [2022-12-14 05:18:12,081 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 5172 transitions. Word has length 6 [2022-12-14 05:18:12,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:18:12,081 INFO L495 AbstractCegarLoop]: Abstraction has 1881 states and 5172 transitions. [2022-12-14 05:18:12,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 05:18:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 5172 transitions. [2022-12-14 05:18:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:18:12,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:12,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:18:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:18:12,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting setThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-12-14 05:18:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1432584239, now seen corresponding path program 1 times [2022-12-14 05:18:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:12,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385622967] [2022-12-14 05:18:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:18:12,155 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 05:18:12,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:18:12,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385622967] [2022-12-14 05:18:12,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385622967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:18:12,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:18:12,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:18:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068017730] [2022-12-14 05:18:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:18:12,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:18:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:18:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:18:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:18:12,157 INFO L87 Difference]: Start difference. First operand 1881 states and 5172 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 05:18:12,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:18:12,344 INFO L93 Difference]: Finished difference Result 2100 states and 5813 transitions. [2022-12-14 05:18:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:18:12,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 05:18:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:18:12,353 INFO L225 Difference]: With dead ends: 2100 [2022-12-14 05:18:12,353 INFO L226 Difference]: Without dead ends: 2100 [2022-12-14 05:18:12,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:18:12,354 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:18:12,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 38 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:18:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-12-14 05:18:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1956. [2022-12-14 05:18:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1896 states have (on average 2.840717299578059) internal successors, (5386), 1955 states have internal predecessors, (5386), 0 states have call successors, (0), 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 05:18:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 5386 transitions. [2022-12-14 05:18:12,401 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 5386 transitions. Word has length 6 [2022-12-14 05:18:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:18:12,401 INFO L495 AbstractCegarLoop]: Abstraction has 1956 states and 5386 transitions. [2022-12-14 05:18:12,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 05:18:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 5386 transitions. [2022-12-14 05:18:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:18:12,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:18:12,402 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 05:18:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:18:12,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-12-14 05:18:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:18:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1432404261, now seen corresponding path program 1 times [2022-12-14 05:18:12,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:18:12,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229177668] [2022-12-14 05:18:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:18:12,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:18:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:18:12,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:18:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:18:12,503 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 05:18:12,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:18:12,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-12-14 05:18:12,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-12-14 05:18:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-12-14 05:18:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-12-14 05:18:12,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-12-14 05:18:12,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr4ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-12-14 05:18:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:18:12,510 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 05:18:12,512 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 05:18:12,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 05:18:12,537 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-14 05:18:12,540 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 05:18:12,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 348 places, 367 transitions, 782 flow [2022-12-14 05:18:12,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 348 places, 367 transitions, 782 flow [2022-12-14 05:18:12,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 367 transitions, 782 flow [2022-12-14 05:18:12,789 INFO L130 PetriNetUnfolder]: 167/1912 cut-off events. [2022-12-14 05:18:12,789 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-14 05:18:12,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 1912 events. 167/1912 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 11617 event pairs, 2 based on Foata normal form. 0/1603 useless extension candidates. Maximal degree in co-relation 1103. Up to 32 conditions per place. [2022-12-14 05:18:12,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 35748 [2022-12-14 05:18:57,537 WARN L233 SmtUtils]: Spent 25.40s on a formula simplification. DAG size of input: 242 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:19:08,386 WARN L233 SmtUtils]: Spent 10.85s on a formula simplification that was a NOOP. DAG size: 231 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:19:36,428 WARN L233 SmtUtils]: Spent 28.04s on a formula simplification. DAG size of input: 255 DAG size of output: 244 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:19:50,328 WARN L233 SmtUtils]: Spent 13.90s on a formula simplification that was a NOOP. DAG size: 244 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:19:50,338 INFO L134 LiptonReduction]: Checked pairs total: 130610 [2022-12-14 05:19:50,339 INFO L136 LiptonReduction]: Total number of compositions: 372 [2022-12-14 05:19:50,340 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 106 transitions, 260 flow [2022-12-14 05:20:05,824 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 665789 states, 658688 states have (on average 4.6981621040614066) internal successors, (3094623), 665788 states have internal predecessors, (3094623), 0 states have call successors, (0), 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 05:20:05,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:20:05,826 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ededba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:20:05,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-12-14 05:20:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 665789 states, 658688 states have (on average 4.6981621040614066) internal successors, (3094623), 665788 states have internal predecessors, (3094623), 0 states have call successors, (0), 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 05:20:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 05:20:06,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:06,727 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 05:20:06,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-14 05:20:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1906, now seen corresponding path program 1 times [2022-12-14 05:20:06,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:06,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885737166] [2022-12-14 05:20:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:06,739 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 05:20:06,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:06,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885737166] [2022-12-14 05:20:06,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885737166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:06,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:20:06,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 05:20:06,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200323997] [2022-12-14 05:20:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:06,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:20:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:20:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:20:07,891 INFO L87 Difference]: Start difference. First operand has 665789 states, 658688 states have (on average 4.6981621040614066) internal successors, (3094623), 665788 states have internal predecessors, (3094623), 0 states have call successors, (0), 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 05:20:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:12,967 INFO L93 Difference]: Finished difference Result 374521 states and 1739256 transitions. [2022-12-14 05:20:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:20:12,968 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 05:20:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:15,632 INFO L225 Difference]: With dead ends: 374521 [2022-12-14 05:20:15,632 INFO L226 Difference]: Without dead ends: 373982 [2022-12-14 05:20:15,633 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 05:20:15,634 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 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 05:20:15,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:20:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373982 states. [2022-12-14 05:20:26,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373982 to 373982. [2022-12-14 05:20:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373982 states, 372640 states have (on average 4.660600042936883) internal successors, (1736726), 373981 states have internal predecessors, (1736726), 0 states have call successors, (0), 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 05:20:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373982 states to 373982 states and 1736726 transitions. [2022-12-14 05:20:29,463 INFO L78 Accepts]: Start accepts. Automaton has 373982 states and 1736726 transitions. Word has length 1 [2022-12-14 05:20:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:20:29,463 INFO L495 AbstractCegarLoop]: Abstraction has 373982 states and 1736726 transitions. [2022-12-14 05:20:29,463 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 05:20:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 373982 states and 1736726 transitions. [2022-12-14 05:20:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:20:29,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:20:29,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:20:29,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:20:29,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-14 05:20:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:20:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash 775956304, now seen corresponding path program 1 times [2022-12-14 05:20:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:20:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138373893] [2022-12-14 05:20:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:20:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:20:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:20:29,517 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 05:20:29,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:20:29,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138373893] [2022-12-14 05:20:29,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138373893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:20:29,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:20:29,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:20:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139649191] [2022-12-14 05:20:29,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:20:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:20:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:20:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:20:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:20:29,519 INFO L87 Difference]: Start difference. First operand 373982 states and 1736726 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 05:20:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:20:37,069 INFO L93 Difference]: Finished difference Result 713990 states and 3255082 transitions. [2022-12-14 05:20:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:20:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 05:20:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:20:42,671 INFO L225 Difference]: With dead ends: 713990 [2022-12-14 05:20:42,671 INFO L226 Difference]: Without dead ends: 713990 [2022-12-14 05:20:42,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:20:42,672 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 68 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:20:42,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 58 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:20:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713990 states. [2022-12-14 05:21:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713990 to 440538. [2022-12-14 05:21:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440538 states, 439212 states have (on average 4.70532681256432) internal successors, (2066636), 440537 states have internal predecessors, (2066636), 0 states have call successors, (0), 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 05:21:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440538 states to 440538 states and 2066636 transitions. [2022-12-14 05:21:04,132 INFO L78 Accepts]: Start accepts. Automaton has 440538 states and 2066636 transitions. Word has length 6 [2022-12-14 05:21:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:21:04,132 INFO L495 AbstractCegarLoop]: Abstraction has 440538 states and 2066636 transitions. [2022-12-14 05:21:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 05:21:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 440538 states and 2066636 transitions. [2022-12-14 05:21:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:21:04,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:21:04,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:21:04,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:21:04,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting setThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-14 05:21:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:21:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash 738855497, now seen corresponding path program 1 times [2022-12-14 05:21:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:21:04,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485827839] [2022-12-14 05:21:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:21:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:21:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:21:04,183 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 05:21:04,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:21:04,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485827839] [2022-12-14 05:21:04,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485827839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:21:04,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:21:04,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:21:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368775140] [2022-12-14 05:21:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:21:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:21:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:21:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:21:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:21:04,185 INFO L87 Difference]: Start difference. First operand 440538 states and 2066636 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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)