./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI --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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- 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-5e519f3 [2022-11-03 02:44:07,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:44:07,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:44:07,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:44:07,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:44:07,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:44:07,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:44:07,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:44:07,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:44:07,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:44:07,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:44:07,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:44:07,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:44:07,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:44:07,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:44:07,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:44:07,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:44:07,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:44:07,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:44:07,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:44:07,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:44:07,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:44:07,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:44:07,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:44:07,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:44:07,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:44:07,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:44:07,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:44:07,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:44:07,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:44:07,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:44:07,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:44:07,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:44:07,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:44:07,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:44:07,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:44:07,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:44:07,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:44:07,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:44:07,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:44:07,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:44:07,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 02:44:07,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:44:07,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:44:07,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:44:07,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:44:07,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:44:07,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:44:07,282 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:44:07,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:44:07,283 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:44:07,283 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:44:07,284 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:44:07,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:44:07,285 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:44:07,285 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:44:07,285 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:44:07,285 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:44:07,286 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:44:07,286 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:44:07,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:44:07,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:44:07,287 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:44:07,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:44:07,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:44:07,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:44:07,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:44:07,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:44:07,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:44:07,289 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 02:44:07,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:44:07,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:44:07,289 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:44:07,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:44:07,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:44:07,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:44:07,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:07,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:44:07,291 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:44:07,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:44:07,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:44:07,291 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:44:07,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:44:07,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:44:07,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:44:07,292 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_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-11-03 02:44:07,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:44:07,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:44:07,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:44:07,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:44:07,587 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:44:07,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-03 02:44:07,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/data/09de22bf9/e64aa9173dcb41e7af4b581d810662b5/FLAGeda434467 [2022-11-03 02:44:08,298 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:44:08,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-03 02:44:08,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/data/09de22bf9/e64aa9173dcb41e7af4b581d810662b5/FLAGeda434467 [2022-11-03 02:44:08,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/data/09de22bf9/e64aa9173dcb41e7af4b581d810662b5 [2022-11-03 02:44:08,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:44:08,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:44:08,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:08,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:44:08,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:44:08,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:08" (1/1) ... [2022-11-03 02:44:08,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4480d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:08, skipping insertion in model container [2022-11-03 02:44:08,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:08" (1/1) ... [2022-11-03 02:44:08,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:44:08,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:44:09,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:09,257 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:44:09,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:09,373 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:44:09,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09 WrapperNode [2022-11-03 02:44:09,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:09,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:09,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:44:09,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:44:09,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,459 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-11-03 02:44:09,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:09,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:44:09,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:44:09,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:44:09,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:44:09,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:44:09,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:44:09,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:44:09,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (1/1) ... [2022-11-03 02:44:09,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:09,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:09,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:44:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:44:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:44:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:44:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:44:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:44:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 02:44:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:44:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-03 02:44:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-03 02:44:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:44:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:44:09,626 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:44:09,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:44:09,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:44:10,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:44:10,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:44:10,122 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:44:10,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:44:10 BoogieIcfgContainer [2022-11-03 02:44:10,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:44:10,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:44:10,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:44:10,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:44:10,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:44:08" (1/3) ... [2022-11-03 02:44:10,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d89a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:44:10, skipping insertion in model container [2022-11-03 02:44:10,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:09" (2/3) ... [2022-11-03 02:44:10,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d89a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:44:10, skipping insertion in model container [2022-11-03 02:44:10,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:44:10" (3/3) ... [2022-11-03 02:44:10,145 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-11-03 02:44:10,160 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:44:10,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:44:10,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-03 02:44:10,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:44:10,292 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-03 02:44:10,337 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:44:10,352 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 103 transitions, 211 flow [2022-11-03 02:44:10,355 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 103 transitions, 211 flow [2022-11-03 02:44:10,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 211 flow [2022-11-03 02:44:10,413 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-11-03 02:44:10,413 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-03 02:44:10,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-03 02:44:10,420 INFO L118 LiptonReduction]: Number of co-enabled transitions 2220 [2022-11-03 02:44:13,020 INFO L133 LiptonReduction]: Checked pairs total: 7545 [2022-11-03 02:44:13,020 INFO L135 LiptonReduction]: Total number of compositions: 74 [2022-11-03 02:44:13,029 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 79 flow [2022-11-03 02:44:13,075 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 288 states, 280 states have (on average 1.9285714285714286) internal successors, (540), 287 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:13,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:44:13,113 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;@7d27ffc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:44:13,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-03 02:44:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 280 states have (on average 1.9285714285714286) internal successors, (540), 287 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:44:13,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:13,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:13,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -490078447, now seen corresponding path program 1 times [2022-11-03 02:44:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:13,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068231983] [2022-11-03 02:44:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:13,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:13,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068231983] [2022-11-03 02:44:13,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068231983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:13,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:13,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:44:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299974970] [2022-11-03 02:44:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:13,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:44:13,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:44:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:44:13,533 INFO L87 Difference]: Start difference. First operand has 288 states, 280 states have (on average 1.9285714285714286) internal successors, (540), 287 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:13,634 INFO L93 Difference]: Finished difference Result 289 states and 541 transitions. [2022-11-03 02:44:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:44:13,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:44:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:13,659 INFO L225 Difference]: With dead ends: 289 [2022-11-03 02:44:13,661 INFO L226 Difference]: Without dead ends: 289 [2022-11-03 02:44:13,662 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 [2022-11-03 02:44:13,667 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:13,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:44:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-03 02:44:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-03 02:44:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 281 states have (on average 1.9252669039145907) internal successors, (541), 288 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 541 transitions. [2022-11-03 02:44:13,788 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 541 transitions. Word has length 10 [2022-11-03 02:44:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:13,789 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 541 transitions. [2022-11-03 02:44:13,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 541 transitions. [2022-11-03 02:44:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:44:13,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:13,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:13,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:44:13,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash -481273659, now seen corresponding path program 1 times [2022-11-03 02:44:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:13,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113601513] [2022-11-03 02:44:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:13,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:13,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:13,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113601513] [2022-11-03 02:44:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113601513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:44:13,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276791783] [2022-11-03 02:44:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:13,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:13,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:44:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:14,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:44:14,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:14,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:14,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276791783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1548486926] [2022-11-03 02:44:14,180 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:336) 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) [2022-11-03 02:44:14,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:44:14,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:44:14,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787667036] [2022-11-03 02:44:14,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:44:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:44:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:44:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:44:14,195 INFO L87 Difference]: Start difference. First operand 289 states and 541 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:14,257 INFO L93 Difference]: Finished difference Result 292 states and 544 transitions. [2022-11-03 02:44:14,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:44:14,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:44:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:14,261 INFO L225 Difference]: With dead ends: 292 [2022-11-03 02:44:14,261 INFO L226 Difference]: Without dead ends: 292 [2022-11-03 02:44:14,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:44:14,268 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:14,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:44:14,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-03 02:44:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-11-03 02:44:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 284 states have (on average 1.9154929577464788) internal successors, (544), 291 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 544 transitions. [2022-11-03 02:44:14,297 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 544 transitions. Word has length 11 [2022-11-03 02:44:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:14,298 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 544 transitions. [2022-11-03 02:44:14,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 544 transitions. [2022-11-03 02:44:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:44:14,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:14,300 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:14,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:14,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:14,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -26424303, now seen corresponding path program 2 times [2022-11-03 02:44:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:14,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759341939] [2022-11-03 02:44:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:44:14,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:14,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759341939] [2022-11-03 02:44:14,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759341939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:14,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:14,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:44:14,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999120425] [2022-11-03 02:44:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:44:14,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:44:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:14,996 INFO L87 Difference]: Start difference. First operand 292 states and 544 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:15,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:15,370 INFO L93 Difference]: Finished difference Result 401 states and 741 transitions. [2022-11-03 02:44:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:44:15,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:44:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:15,374 INFO L225 Difference]: With dead ends: 401 [2022-11-03 02:44:15,374 INFO L226 Difference]: Without dead ends: 401 [2022-11-03 02:44:15,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:15,376 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:15,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 16 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:44:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-03 02:44:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 310. [2022-11-03 02:44:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 303 states have (on average 1.900990099009901) internal successors, (576), 309 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 576 transitions. [2022-11-03 02:44:15,391 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 576 transitions. Word has length 14 [2022-11-03 02:44:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:15,391 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 576 transitions. [2022-11-03 02:44:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 576 transitions. [2022-11-03 02:44:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:44:15,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:15,393 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:15,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:44:15,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:15,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1119512220, now seen corresponding path program 1 times [2022-11-03 02:44:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:15,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799936009] [2022-11-03 02:44:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:15,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:44:15,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:15,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799936009] [2022-11-03 02:44:15,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799936009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:15,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:15,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:44:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068559327] [2022-11-03 02:44:15,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:15,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:44:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:44:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:15,700 INFO L87 Difference]: Start difference. First operand 310 states and 576 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:15,995 INFO L93 Difference]: Finished difference Result 420 states and 775 transitions. [2022-11-03 02:44:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:44:15,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:44:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:15,998 INFO L225 Difference]: With dead ends: 420 [2022-11-03 02:44:15,998 INFO L226 Difference]: Without dead ends: 420 [2022-11-03 02:44:15,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:15,999 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:16,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 16 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:44:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-03 02:44:16,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 329. [2022-11-03 02:44:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 322 states have (on average 1.8944099378881987) internal successors, (610), 328 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 610 transitions. [2022-11-03 02:44:16,010 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 610 transitions. Word has length 14 [2022-11-03 02:44:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:16,010 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 610 transitions. [2022-11-03 02:44:16,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 610 transitions. [2022-11-03 02:44:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:44:16,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:16,012 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:16,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:44:16,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:16,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1615740064, now seen corresponding path program 1 times [2022-11-03 02:44:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:16,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596562399] [2022-11-03 02:44:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:16,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:16,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596562399] [2022-11-03 02:44:16,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596562399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:44:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706712373] [2022-11-03 02:44:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:16,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:16,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:16,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:16,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:44:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:16,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:44:16,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:16,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:16,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706712373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1947133144] [2022-11-03 02:44:16,303 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:336) 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) [2022-11-03 02:44:16,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:44:16,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 02:44:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989714742] [2022-11-03 02:44:16,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:44:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:44:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:16,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:44:16,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:16,306 INFO L87 Difference]: Start difference. First operand 329 states and 610 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:16,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:16,384 INFO L93 Difference]: Finished difference Result 335 states and 616 transitions. [2022-11-03 02:44:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:44:16,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-03 02:44:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:16,386 INFO L225 Difference]: With dead ends: 335 [2022-11-03 02:44:16,386 INFO L226 Difference]: Without dead ends: 335 [2022-11-03 02:44:16,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:16,387 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:16,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:44:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-03 02:44:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-03 02:44:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 328 states have (on average 1.8780487804878048) internal successors, (616), 334 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 616 transitions. [2022-11-03 02:44:16,398 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 616 transitions. Word has length 20 [2022-11-03 02:44:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:16,398 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 616 transitions. [2022-11-03 02:44:16,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 616 transitions. [2022-11-03 02:44:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:44:16,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:16,400 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:16,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:16,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:16,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2076270560, now seen corresponding path program 2 times [2022-11-03 02:44:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:16,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366504226] [2022-11-03 02:44:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:16,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:17,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:17,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366504226] [2022-11-03 02:44:17,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366504226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:17,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:17,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:44:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745305705] [2022-11-03 02:44:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:17,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:44:17,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:44:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:17,061 INFO L87 Difference]: Start difference. First operand 335 states and 616 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:17,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:17,380 INFO L93 Difference]: Finished difference Result 514 states and 949 transitions. [2022-11-03 02:44:17,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:44:17,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-03 02:44:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:17,383 INFO L225 Difference]: With dead ends: 514 [2022-11-03 02:44:17,384 INFO L226 Difference]: Without dead ends: 488 [2022-11-03 02:44:17,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:17,385 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:17,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 16 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:44:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-03 02:44:17,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 353. [2022-11-03 02:44:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 346 states have (on average 1.8670520231213872) internal successors, (646), 352 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 646 transitions. [2022-11-03 02:44:17,398 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 646 transitions. Word has length 26 [2022-11-03 02:44:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:17,398 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 646 transitions. [2022-11-03 02:44:17,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 646 transitions. [2022-11-03 02:44:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:44:17,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:17,400 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:44:17,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1749134019, now seen corresponding path program 1 times [2022-11-03 02:44:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:17,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701427517] [2022-11-03 02:44:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:17,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:17,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701427517] [2022-11-03 02:44:17,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701427517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:17,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:17,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:44:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491981688] [2022-11-03 02:44:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:17,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:44:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:44:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:17,806 INFO L87 Difference]: Start difference. First operand 353 states and 646 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:18,102 INFO L93 Difference]: Finished difference Result 500 states and 905 transitions. [2022-11-03 02:44:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:44:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-03 02:44:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:18,105 INFO L225 Difference]: With dead ends: 500 [2022-11-03 02:44:18,105 INFO L226 Difference]: Without dead ends: 474 [2022-11-03 02:44:18,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:18,106 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:18,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 16 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:44:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-03 02:44:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 362. [2022-11-03 02:44:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 355 states have (on average 1.8422535211267606) internal successors, (654), 361 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 654 transitions. [2022-11-03 02:44:18,117 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 654 transitions. Word has length 26 [2022-11-03 02:44:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:18,118 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 654 transitions. [2022-11-03 02:44:18,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 654 transitions. [2022-11-03 02:44:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:18,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:18,119 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:18,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:44:18,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash 582696095, now seen corresponding path program 1 times [2022-11-03 02:44:18,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:18,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436538458] [2022-11-03 02:44:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:18,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:18,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436538458] [2022-11-03 02:44:18,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436538458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:18,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:18,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:18,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671823384] [2022-11-03 02:44:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:18,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:18,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:18,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:18,862 INFO L87 Difference]: Start difference. First operand 362 states and 654 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:19,540 INFO L93 Difference]: Finished difference Result 774 states and 1402 transitions. [2022-11-03 02:44:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:44:19,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:19,544 INFO L225 Difference]: With dead ends: 774 [2022-11-03 02:44:19,544 INFO L226 Difference]: Without dead ends: 752 [2022-11-03 02:44:19,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:44:19,545 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 108 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:19,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 8 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:44:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-03 02:44:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 538. [2022-11-03 02:44:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 531 states have (on average 1.8851224105461393) internal successors, (1001), 537 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1001 transitions. [2022-11-03 02:44:19,563 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1001 transitions. Word has length 29 [2022-11-03 02:44:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:19,563 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 1001 transitions. [2022-11-03 02:44:19,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1001 transitions. [2022-11-03 02:44:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:19,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:19,565 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:19,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:44:19,566 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash -896251371, now seen corresponding path program 1 times [2022-11-03 02:44:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:19,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825989491] [2022-11-03 02:44:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:20,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825989491] [2022-11-03 02:44:20,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825989491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:20,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:20,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669153755] [2022-11-03 02:44:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:20,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:20,171 INFO L87 Difference]: Start difference. First operand 538 states and 1001 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:20,806 INFO L93 Difference]: Finished difference Result 720 states and 1299 transitions. [2022-11-03 02:44:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:44:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:20,810 INFO L225 Difference]: With dead ends: 720 [2022-11-03 02:44:20,810 INFO L226 Difference]: Without dead ends: 708 [2022-11-03 02:44:20,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:44:20,811 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 98 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:20,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 8 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:44:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-11-03 02:44:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 540. [2022-11-03 02:44:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 533 states have (on average 1.8780487804878048) internal successors, (1001), 539 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1001 transitions. [2022-11-03 02:44:20,827 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1001 transitions. Word has length 29 [2022-11-03 02:44:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:20,828 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 1001 transitions. [2022-11-03 02:44:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1001 transitions. [2022-11-03 02:44:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:20,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:20,829 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:20,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:44:20,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash -472774625, now seen corresponding path program 2 times [2022-11-03 02:44:20,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:20,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812966064] [2022-11-03 02:44:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:20,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:21,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:21,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812966064] [2022-11-03 02:44:21,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812966064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:21,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:21,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711565415] [2022-11-03 02:44:21,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:21,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:21,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:21,410 INFO L87 Difference]: Start difference. First operand 540 states and 1001 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:22,070 INFO L93 Difference]: Finished difference Result 739 states and 1348 transitions. [2022-11-03 02:44:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:44:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:22,078 INFO L225 Difference]: With dead ends: 739 [2022-11-03 02:44:22,078 INFO L226 Difference]: Without dead ends: 719 [2022-11-03 02:44:22,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:44:22,080 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:22,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 8 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:44:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-11-03 02:44:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 534. [2022-11-03 02:44:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 527 states have (on average 1.8766603415559773) internal successors, (989), 533 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 989 transitions. [2022-11-03 02:44:22,098 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 989 transitions. Word has length 29 [2022-11-03 02:44:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:22,099 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 989 transitions. [2022-11-03 02:44:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 989 transitions. [2022-11-03 02:44:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:22,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:22,100 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:44:22,101 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1946773431, now seen corresponding path program 3 times [2022-11-03 02:44:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:22,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889748831] [2022-11-03 02:44:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:22,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:22,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889748831] [2022-11-03 02:44:22,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889748831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:22,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:22,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841905567] [2022-11-03 02:44:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:22,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:22,683 INFO L87 Difference]: Start difference. First operand 534 states and 989 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:23,448 INFO L93 Difference]: Finished difference Result 715 states and 1297 transitions. [2022-11-03 02:44:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:44:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:23,451 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:44:23,451 INFO L226 Difference]: Without dead ends: 700 [2022-11-03 02:44:23,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:44:23,452 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:23,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 8 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:44:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-03 02:44:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 533. [2022-11-03 02:44:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 526 states have (on average 1.876425855513308) internal successors, (987), 532 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 987 transitions. [2022-11-03 02:44:23,470 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 987 transitions. Word has length 29 [2022-11-03 02:44:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:23,470 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 987 transitions. [2022-11-03 02:44:23,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 987 transitions. [2022-11-03 02:44:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:23,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:23,472 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:23,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:44:23,472 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2108567391, now seen corresponding path program 4 times [2022-11-03 02:44:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:23,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707083107] [2022-11-03 02:44:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:23,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:23,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:23,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707083107] [2022-11-03 02:44:23,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707083107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:23,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:23,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:23,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679006585] [2022-11-03 02:44:23,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:23,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:23,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:23,988 INFO L87 Difference]: Start difference. First operand 533 states and 987 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:24,765 INFO L93 Difference]: Finished difference Result 732 states and 1329 transitions. [2022-11-03 02:44:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:44:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:24,769 INFO L225 Difference]: With dead ends: 732 [2022-11-03 02:44:24,769 INFO L226 Difference]: Without dead ends: 716 [2022-11-03 02:44:24,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:44:24,770 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:24,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 8 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:44:24,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-03 02:44:24,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 533. [2022-11-03 02:44:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 526 states have (on average 1.876425855513308) internal successors, (987), 532 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 987 transitions. [2022-11-03 02:44:24,786 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 987 transitions. Word has length 29 [2022-11-03 02:44:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 987 transitions. [2022-11-03 02:44:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 987 transitions. [2022-11-03 02:44:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:24,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:24,787 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:24,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:44:24,788 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash -995652461, now seen corresponding path program 5 times [2022-11-03 02:44:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:24,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700360530] [2022-11-03 02:44:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:25,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:25,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700360530] [2022-11-03 02:44:25,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700360530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:25,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:25,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347477204] [2022-11-03 02:44:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:25,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:25,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:25,359 INFO L87 Difference]: Start difference. First operand 533 states and 987 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:26,056 INFO L93 Difference]: Finished difference Result 723 states and 1309 transitions. [2022-11-03 02:44:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:44:26,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:26,059 INFO L225 Difference]: With dead ends: 723 [2022-11-03 02:44:26,059 INFO L226 Difference]: Without dead ends: 705 [2022-11-03 02:44:26,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:26,060 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:26,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 8 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:44:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-03 02:44:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 521. [2022-11-03 02:44:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 514 states have (on average 1.8735408560311284) internal successors, (963), 520 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 963 transitions. [2022-11-03 02:44:26,077 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 963 transitions. Word has length 29 [2022-11-03 02:44:26,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:26,077 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 963 transitions. [2022-11-03 02:44:26,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 963 transitions. [2022-11-03 02:44:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:26,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:26,079 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:26,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:44:26,079 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:26,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1341343057, now seen corresponding path program 1 times [2022-11-03 02:44:26,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:26,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639054461] [2022-11-03 02:44:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:26,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:26,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:26,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639054461] [2022-11-03 02:44:26,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639054461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:26,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:26,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:26,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838047304] [2022-11-03 02:44:26,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:26,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:26,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:26,810 INFO L87 Difference]: Start difference. First operand 521 states and 963 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:27,352 INFO L93 Difference]: Finished difference Result 661 states and 1224 transitions. [2022-11-03 02:44:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:44:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:27,355 INFO L225 Difference]: With dead ends: 661 [2022-11-03 02:44:27,355 INFO L226 Difference]: Without dead ends: 659 [2022-11-03 02:44:27,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:44:27,356 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:27,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 8 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:44:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-03 02:44:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 533. [2022-11-03 02:44:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 526 states have (on average 1.8745247148288973) internal successors, (986), 532 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 986 transitions. [2022-11-03 02:44:27,373 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 986 transitions. Word has length 29 [2022-11-03 02:44:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:27,374 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 986 transitions. [2022-11-03 02:44:27,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 986 transitions. [2022-11-03 02:44:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:27,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:27,377 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:27,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:44:27,377 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1063494021, now seen corresponding path program 2 times [2022-11-03 02:44:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600998217] [2022-11-03 02:44:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:28,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600998217] [2022-11-03 02:44:28,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600998217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:28,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:28,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:28,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184068507] [2022-11-03 02:44:28,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:28,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:28,137 INFO L87 Difference]: Start difference. First operand 533 states and 986 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:28,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:28,805 INFO L93 Difference]: Finished difference Result 693 states and 1284 transitions. [2022-11-03 02:44:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:44:28,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:28,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:28,809 INFO L225 Difference]: With dead ends: 693 [2022-11-03 02:44:28,809 INFO L226 Difference]: Without dead ends: 689 [2022-11-03 02:44:28,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:44:28,810 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:28,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 8 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:44:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-03 02:44:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 545. [2022-11-03 02:44:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.8754646840148699) internal successors, (1009), 544 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1009 transitions. [2022-11-03 02:44:28,834 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1009 transitions. Word has length 29 [2022-11-03 02:44:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:28,835 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 1009 transitions. [2022-11-03 02:44:28,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1009 transitions. [2022-11-03 02:44:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:28,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:28,836 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:28,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:44:28,836 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:28,837 INFO L85 PathProgramCache]: Analyzing trace with hash 344276433, now seen corresponding path program 3 times [2022-11-03 02:44:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:28,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776518272] [2022-11-03 02:44:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:28,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:29,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:29,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776518272] [2022-11-03 02:44:29,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776518272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:29,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:29,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473458816] [2022-11-03 02:44:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:29,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:29,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:29,599 INFO L87 Difference]: Start difference. First operand 545 states and 1009 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:30,320 INFO L93 Difference]: Finished difference Result 715 states and 1330 transitions. [2022-11-03 02:44:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:44:30,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:30,325 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:44:30,325 INFO L226 Difference]: Without dead ends: 709 [2022-11-03 02:44:30,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:30,326 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:30,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 8 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:44:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-03 02:44:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 559. [2022-11-03 02:44:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 552 states have (on average 1.8768115942028984) internal successors, (1036), 558 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1036 transitions. [2022-11-03 02:44:30,352 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1036 transitions. Word has length 29 [2022-11-03 02:44:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:30,352 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 1036 transitions. [2022-11-03 02:44:30,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1036 transitions. [2022-11-03 02:44:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:30,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:30,353 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:30,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:44:30,354 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:30,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2124178907, now seen corresponding path program 4 times [2022-11-03 02:44:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:30,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793256519] [2022-11-03 02:44:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:30,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:36,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:36,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793256519] [2022-11-03 02:44:36,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793256519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:44:36,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333049656] [2022-11-03 02:44:36,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:44:36,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:36,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:36,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:36,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:44:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:37,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:44:37,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:37,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:44:37,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:44:37,285 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 02:44:37,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-03 02:44:37,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-03 02:44:37,350 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:44:37,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-03 02:44:37,380 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:44:37,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-03 02:44:37,449 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:44:37,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 71 [2022-11-03 02:44:37,526 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:44:37,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-03 02:44:37,655 INFO L356 Elim1Store]: treesize reduction 181, result has 21.0 percent of original size [2022-11-03 02:44:37,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 76 treesize of output 87 [2022-11-03 02:44:37,756 INFO L356 Elim1Store]: treesize reduction 181, result has 21.0 percent of original size [2022-11-03 02:44:37,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 76 treesize of output 87 [2022-11-03 02:44:38,037 INFO L356 Elim1Store]: treesize reduction 289, result has 14.2 percent of original size [2022-11-03 02:44:38,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 99 treesize of output 116 [2022-11-03 02:44:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-03 02:44:42,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:44:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333049656] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:44:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:44:43,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 13] total 32 [2022-11-03 02:44:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031326858] [2022-11-03 02:44:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:44:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:44:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=927, Unknown=4, NotChecked=0, Total=1056 [2022-11-03 02:44:43,129 INFO L87 Difference]: Start difference. First operand 559 states and 1036 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:44,000 INFO L93 Difference]: Finished difference Result 704 states and 1312 transitions. [2022-11-03 02:44:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:44:44,001 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:44:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:44,004 INFO L225 Difference]: With dead ends: 704 [2022-11-03 02:44:44,006 INFO L226 Difference]: Without dead ends: 696 [2022-11-03 02:44:44,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=130, Invalid=988, Unknown=4, NotChecked=0, Total=1122 [2022-11-03 02:44:44,007 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:44,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 16 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 680 Invalid, 0 Unknown, 30 Unchecked, 0.8s Time] [2022-11-03 02:44:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-11-03 02:44:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 575. [2022-11-03 02:44:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 568 states have (on average 1.8785211267605635) internal successors, (1067), 574 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1067 transitions. [2022-11-03 02:44:44,037 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1067 transitions. Word has length 29 [2022-11-03 02:44:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:44,037 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 1067 transitions. [2022-11-03 02:44:44,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1067 transitions. [2022-11-03 02:44:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:44:44,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:44,039 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:44,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:44:44,255 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:44:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1600893673, now seen corresponding path program 5 times [2022-11-03 02:44:44,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:44,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757627128] [2022-11-03 02:44:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:44,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:45,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:45,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757627128] [2022-11-03 02:48:45,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757627128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:48:45,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156329655] [2022-11-03 02:48:45,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:48:45,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:45,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:45,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:48:45,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:48:45,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:48:45,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 02:48:45,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:45,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:48:45,655 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 02:48:45,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-03 02:48:45,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:48:45,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-03 02:48:45,699 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:48:45,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-03 02:48:45,724 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:48:45,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-03 02:48:45,780 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:48:45,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 71 [2022-11-03 02:48:45,853 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:48:45,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-03 02:48:45,913 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:48:45,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-03 02:48:45,972 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:48:45,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-03 02:48:46,220 INFO L356 Elim1Store]: treesize reduction 343, result has 12.3 percent of original size [2022-11-03 02:48:46,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 110 treesize of output 119 [2022-11-03 02:48:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:48:48,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:48:48,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156329655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:48,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:48:48,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 23 [2022-11-03 02:48:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230691231] [2022-11-03 02:48:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:48:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:48:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=477, Unknown=3, NotChecked=0, Total=552 [2022-11-03 02:48:48,764 INFO L87 Difference]: Start difference. First operand 575 states and 1067 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:52,529 INFO L93 Difference]: Finished difference Result 716 states and 1304 transitions. [2022-11-03 02:48:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:48:52,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:48:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:52,533 INFO L225 Difference]: With dead ends: 716 [2022-11-03 02:48:52,533 INFO L226 Difference]: Without dead ends: 708 [2022-11-03 02:48:52,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=164, Invalid=822, Unknown=6, NotChecked=0, Total=992 [2022-11-03 02:48:52,534 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 105 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:52,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 8 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 440 Invalid, 0 Unknown, 86 Unchecked, 0.5s Time] [2022-11-03 02:48:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-11-03 02:48:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 559. [2022-11-03 02:48:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 552 states have (on average 1.8731884057971016) internal successors, (1034), 558 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1034 transitions. [2022-11-03 02:48:52,552 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1034 transitions. Word has length 29 [2022-11-03 02:48:52,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:52,552 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 1034 transitions. [2022-11-03 02:48:52,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1034 transitions. [2022-11-03 02:48:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:48:52,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:52,554 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:52,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:52,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 02:48:52,770 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:48:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash -388831718, now seen corresponding path program 1 times [2022-11-03 02:48:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:52,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368366004] [2022-11-03 02:48:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:48:53,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:53,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368366004] [2022-11-03 02:48:53,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368366004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:53,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:53,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:48:53,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255282746] [2022-11-03 02:48:53,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:53,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:48:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:48:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:48:53,191 INFO L87 Difference]: Start difference. First operand 559 states and 1034 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:53,984 INFO L93 Difference]: Finished difference Result 705 states and 1271 transitions. [2022-11-03 02:48:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:48:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:48:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:53,987 INFO L225 Difference]: With dead ends: 705 [2022-11-03 02:48:53,987 INFO L226 Difference]: Without dead ends: 538 [2022-11-03 02:48:53,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:48:53,988 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 111 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:53,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 5 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:48:53,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-03 02:48:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 409. [2022-11-03 02:48:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 402 states have (on average 1.8233830845771144) internal successors, (733), 408 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 733 transitions. [2022-11-03 02:48:54,001 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 733 transitions. Word has length 29 [2022-11-03 02:48:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:54,001 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 733 transitions. [2022-11-03 02:48:54,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 733 transitions. [2022-11-03 02:48:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:48:54,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:54,003 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:54,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:48:54,003 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:48:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1990052625, now seen corresponding path program 6 times [2022-11-03 02:48:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:54,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069163355] [2022-11-03 02:48:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:54,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:48:58,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:58,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069163355] [2022-11-03 02:48:58,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069163355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:48:58,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562127568] [2022-11-03 02:48:58,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:48:58,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:58,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:58,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:58,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:48:58,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:48:58,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:48:58,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 02:48:58,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:58,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 02:48:58,959 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 02:48:58,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-03 02:48:58,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:48:59,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-03 02:48:59,020 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:48:59,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-03 02:48:59,040 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:48:59,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-03 02:48:59,092 INFO L356 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-03 02:48:59,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 71 [2022-11-03 02:48:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:48:59,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:48:59,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562127568] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:48:59,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:48:59,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18, 16] total 29 [2022-11-03 02:48:59,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864083782] [2022-11-03 02:48:59,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:48:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:59,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:48:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:48:59,272 INFO L87 Difference]: Start difference. First operand 409 states and 733 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:59,685 INFO L93 Difference]: Finished difference Result 396 states and 701 transitions. [2022-11-03 02:48:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:48:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 02:48:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:59,688 INFO L225 Difference]: With dead ends: 396 [2022-11-03 02:48:59,688 INFO L226 Difference]: Without dead ends: 374 [2022-11-03 02:48:59,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:48:59,689 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 82 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:59,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 0 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:48:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-03 02:48:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 337. [2022-11-03 02:48:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 1.7897897897897899) internal successors, (596), 336 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:59,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 596 transitions. [2022-11-03 02:48:59,698 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 596 transitions. Word has length 29 [2022-11-03 02:48:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:59,698 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 596 transitions. [2022-11-03 02:48:59,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 596 transitions. [2022-11-03 02:48:59,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:48:59,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:59,699 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:59,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 02:48:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797c6cd4-a4cc-4e12-b7fc-05d9d0675bd7/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:59,913 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-03 02:48:59,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash 511105159, now seen corresponding path program 2 times [2022-11-03 02:48:59,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:59,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992424459] [2022-11-03 02:48:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:59,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat