./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs --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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:58:47,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:58:47,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:58:47,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:58:47,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:58:47,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:58:47,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:58:47,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:58:47,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:58:47,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:58:47,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:58:47,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:58:47,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:58:48,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:58:48,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:58:48,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:58:48,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:58:48,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:58:48,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:58:48,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:58:48,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:58:48,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:58:48,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:58:48,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:58:48,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:58:48,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:58:48,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:58:48,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:58:48,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:58:48,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:58:48,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:58:48,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:58:48,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:58:48,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:58:48,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:58:48,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:58:48,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:58:48,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:58:48,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:58:48,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:58:48,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:58:48,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/config/svcomp-DataRace-32bit-Taipan_Default.epf [2021-11-19 13:58:48,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:58:48,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:58:48,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:58:48,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:58:48,121 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:58:48,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:58:48,121 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:58:48,122 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:58:48,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:58:48,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:58:48,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:58:48,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:58:48,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:58:48,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:58:48,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:58:48,126 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:58:48,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:58:48,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:58:48,128 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:58:48,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:58:48,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:58:48,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:58:48,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:58:48,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:58:48,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:58:48,130 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-19 13:58:48,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:58:48,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:58:48,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:58:48,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:58:48,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:58:48,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:58:48,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:58:48,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:58:48,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:58:48,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:58:48,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:58:48,136 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:58:48,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:58:48,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:58:48,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:58:48,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:58:48,138 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2021-11-19 13:58:48,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:58:48,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:58:48,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:58:48,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:58:48,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:58:48,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2021-11-19 13:58:48,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/data/5b69048f0/f8408bf32c4e44fb952882898682d1f1/FLAGbef03a0a4 [2021-11-19 13:58:49,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:58:49,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2021-11-19 13:58:49,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/data/5b69048f0/f8408bf32c4e44fb952882898682d1f1/FLAGbef03a0a4 [2021-11-19 13:58:49,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/data/5b69048f0/f8408bf32c4e44fb952882898682d1f1 [2021-11-19 13:58:49,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:58:49,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:58:49,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:58:49,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:58:49,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:58:49,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:49" (1/1) ... [2021-11-19 13:58:49,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56267306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:49, skipping insertion in model container [2021-11-19 13:58:49,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:58:49" (1/1) ... [2021-11-19 13:58:49,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:58:49,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:58:50,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:58:50,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:58:50,353 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:58:50,430 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:58:50,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50 WrapperNode [2021-11-19 13:58:50,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:58:50,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:58:50,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:58:50,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:58:50,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,498 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2021-11-19 13:58:50,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:58:50,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:58:50,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:58:50,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:58:50,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:58:50,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:58:50,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:58:50,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:58:50,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (1/1) ... [2021-11-19 13:58:50,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:58:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:58:50,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:58:50,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:58:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:58:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:58:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:58:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:58:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-19 13:58:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-19 13:58:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-19 13:58:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:58:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:58:50,665 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:58:50,792 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:58:50,794 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:58:51,060 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:58:51,069 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:58:51,069 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:58:51,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:58:51 BoogieIcfgContainer [2021-11-19 13:58:51,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:58:51,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:58:51,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:58:51,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:58:51,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:58:49" (1/3) ... [2021-11-19 13:58:51,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439c842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:58:51, skipping insertion in model container [2021-11-19 13:58:51,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:58:50" (2/3) ... [2021-11-19 13:58:51,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439c842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:58:51, skipping insertion in model container [2021-11-19 13:58:51,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:58:51" (3/3) ... [2021-11-19 13:58:51,098 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2021-11-19 13:58:51,104 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:58:51,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:58:51,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 13:58:51,105 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:58:51,158 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,159 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,159 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,159 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,160 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,160 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,160 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,160 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,161 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,161 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,161 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,162 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,162 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,162 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,162 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,163 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,163 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,163 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,164 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,164 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,164 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,164 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,165 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,165 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,165 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,167 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,168 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,168 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,169 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,169 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,169 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,170 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,170 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,170 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,170 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,171 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,171 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,172 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,172 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,175 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,176 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,176 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,177 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,177 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,178 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,178 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,178 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,178 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,179 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,179 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,180 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,180 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,180 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,180 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,180 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,180 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,181 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,181 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,181 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,181 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,181 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,182 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,182 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,182 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,182 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,183 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,183 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,183 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,183 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,184 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,184 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,184 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,184 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,184 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,185 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,185 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,185 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,185 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,185 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,186 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,186 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,186 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,187 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,187 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,187 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,187 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,188 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,188 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,188 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,188 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,188 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,189 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,189 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,189 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,189 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,190 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,190 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,190 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,190 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,191 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,191 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,191 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,191 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,192 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,192 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,192 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,192 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,193 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,193 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,193 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,193 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,194 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,195 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,195 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,195 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,195 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,196 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,197 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,198 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,198 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,198 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,199 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,199 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,199 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,199 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,200 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,201 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,202 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,202 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,205 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,206 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,207 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet35#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,208 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~p~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,209 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~mem33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:58:51,232 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 13:58:51,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:58:51,294 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:58:51,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-19 13:58:51,310 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:58:51,325 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 105 transitions, 215 flow [2021-11-19 13:58:51,329 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 105 transitions, 215 flow [2021-11-19 13:58:51,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 105 transitions, 215 flow [2021-11-19 13:58:51,390 INFO L129 PetriNetUnfolder]: 4/104 cut-off events. [2021-11-19 13:58:51,390 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-19 13:58:51,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 4/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-11-19 13:58:51,400 INFO L116 LiptonReduction]: Number of co-enabled transitions 2400 [2021-11-19 13:58:54,537 INFO L131 LiptonReduction]: Checked pairs total: 8243 [2021-11-19 13:58:54,538 INFO L133 LiptonReduction]: Total number of compositions: 79 [2021-11-19 13:58:54,550 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 79 flow [2021-11-19 13:58:54,601 INFO L133 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) [2021-11-19 13:58:54,609 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) [2021-11-19 13:58:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 13:58:54,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:54,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:54,620 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1323467954, now seen corresponding path program 1 times [2021-11-19 13:58:54,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:54,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043167506] [2021-11-19 13:58:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:54,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:54,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:54,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043167506] [2021-11-19 13:58:54,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043167506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:58:54,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:58:54,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:58:54,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467030952] [2021-11-19 13:58:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:58:54,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:58:54,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:58:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:58:54,954 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) [2021-11-19 13:58:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:55,062 INFO L93 Difference]: Finished difference Result 289 states and 541 transitions. [2021-11-19 13:58:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:58:55,065 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 [2021-11-19 13:58:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:55,091 INFO L225 Difference]: With dead ends: 289 [2021-11-19 13:58:55,095 INFO L226 Difference]: Without dead ends: 289 [2021-11-19 13:58:55,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:58:55,107 INFO L933 BasicCegarLoop]: 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 [2021-11-19 13:58:55,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:58:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-19 13:58:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-19 13:58:55,223 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) [2021-11-19 13:58:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 541 transitions. [2021-11-19 13:58:55,235 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 541 transitions. Word has length 10 [2021-11-19 13:58:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:55,243 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 541 transitions. [2021-11-19 13:58:55,243 INFO L471 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) [2021-11-19 13:58:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 541 transitions. [2021-11-19 13:58:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:58:55,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:55,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:55,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:58:55,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1750039180, now seen corresponding path program 1 times [2021-11-19 13:58:55,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:55,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542186061] [2021-11-19 13:58:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:55,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:55,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542186061] [2021-11-19 13:58:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542186061] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:58:55,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475172956] [2021-11-19 13:58:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:55,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:58:55,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:58:55,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:58:55,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:58:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:55,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:58:55,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:58:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:55,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:58:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:55,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475172956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:58:55,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2746951] [2021-11-19 13:58:55,676 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:58:55,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:58:55,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-19 13:58:55,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611715835] [2021-11-19 13:58:55,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:58:55,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:58:55,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:55,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:58:55,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:55,705 INFO L87 Difference]: Start difference. First operand 289 states and 541 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:58:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:55,802 INFO L93 Difference]: Finished difference Result 292 states and 544 transitions. [2021-11-19 13:58:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:58:55,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 [2021-11-19 13:58:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:55,806 INFO L225 Difference]: With dead ends: 292 [2021-11-19 13:58:55,806 INFO L226 Difference]: Without dead ends: 292 [2021-11-19 13:58:55,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:55,808 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:58:55,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:58:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-19 13:58:55,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-11-19 13:58:55,827 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) [2021-11-19 13:58:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 544 transitions. [2021-11-19 13:58:55,829 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 544 transitions. Word has length 11 [2021-11-19 13:58:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:55,830 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 544 transitions. [2021-11-19 13:58:55,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:58:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 544 transitions. [2021-11-19 13:58:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:58:55,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:55,832 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:55,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:58:56,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-19 13:58:56,054 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1117902030, now seen corresponding path program 2 times [2021-11-19 13:58:56,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:56,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48652670] [2021-11-19 13:58:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:56,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 13:58:56,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:56,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48652670] [2021-11-19 13:58:56,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48652670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:58:56,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:58:56,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:58:56,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800289363] [2021-11-19 13:58:56,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:58:56,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:58:56,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:58:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:56,337 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) [2021-11-19 13:58:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:56,690 INFO L93 Difference]: Finished difference Result 324 states and 602 transitions. [2021-11-19 13:58:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:58:56,691 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 [2021-11-19 13:58:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:56,693 INFO L225 Difference]: With dead ends: 324 [2021-11-19 13:58:56,694 INFO L226 Difference]: Without dead ends: 324 [2021-11-19 13:58:56,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:56,696 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:58:56,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:58:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-19 13:58:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 310. [2021-11-19 13:58:56,728 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) [2021-11-19 13:58:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 576 transitions. [2021-11-19 13:58:56,730 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 576 transitions. Word has length 14 [2021-11-19 13:58:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:56,732 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 576 transitions. [2021-11-19 13:58:56,732 INFO L471 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) [2021-11-19 13:58:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 576 transitions. [2021-11-19 13:58:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:58:56,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:56,735 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:56,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:58:56,736 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:56,737 INFO L85 PathProgramCache]: Analyzing trace with hash 817141843, now seen corresponding path program 1 times [2021-11-19 13:58:56,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:56,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759866347] [2021-11-19 13:58:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:56,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 13:58:56,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:56,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759866347] [2021-11-19 13:58:56,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759866347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:58:56,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:58:56,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:58:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782311102] [2021-11-19 13:58:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:58:56,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:58:56,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:58:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:56,950 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) [2021-11-19 13:58:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:57,296 INFO L93 Difference]: Finished difference Result 343 states and 636 transitions. [2021-11-19 13:58:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:58:57,297 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 [2021-11-19 13:58:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:57,300 INFO L225 Difference]: With dead ends: 343 [2021-11-19 13:58:57,300 INFO L226 Difference]: Without dead ends: 343 [2021-11-19 13:58:57,301 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:58:57,303 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:58:57,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 16 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:58:57,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-19 13:58:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 329. [2021-11-19 13:58:57,318 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) [2021-11-19 13:58:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 610 transitions. [2021-11-19 13:58:57,321 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 610 transitions. Word has length 14 [2021-11-19 13:58:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:57,322 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 610 transitions. [2021-11-19 13:58:57,322 INFO L471 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) [2021-11-19 13:58:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 610 transitions. [2021-11-19 13:58:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:58:57,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:57,324 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:57,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:58:57,325 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -423561383, now seen corresponding path program 1 times [2021-11-19 13:58:57,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:57,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390627555] [2021-11-19 13:58:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:57,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:57,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:57,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390627555] [2021-11-19 13:58:57,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390627555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:58:57,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288802053] [2021-11-19 13:58:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:57,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:58:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:58:57,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:58:57,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:58:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:57,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:58:57,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:58:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:57,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:58:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:58:57,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288802053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:58:57,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [349755715] [2021-11-19 13:58:57,683 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:58:57,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:58:57,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-19 13:58:57,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524574885] [2021-11-19 13:58:57,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:58:57,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:58:57,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:58:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:58:57,689 INFO L87 Difference]: Start difference. First operand 329 states and 610 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:58:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:57,739 INFO L93 Difference]: Finished difference Result 335 states and 616 transitions. [2021-11-19 13:58:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:58:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-19 13:58:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:57,747 INFO L225 Difference]: With dead ends: 335 [2021-11-19 13:58:57,747 INFO L226 Difference]: Without dead ends: 335 [2021-11-19 13:58:57,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:58:57,753 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:58:57,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:58:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-19 13:58:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-11-19 13:58:57,773 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) [2021-11-19 13:58:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 616 transitions. [2021-11-19 13:58:57,775 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 616 transitions. Word has length 20 [2021-11-19 13:58:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:57,776 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 616 transitions. [2021-11-19 13:58:57,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:58:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 616 transitions. [2021-11-19 13:58:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:58:57,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:57,807 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:57,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:58:58,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:58:58,015 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 877955353, now seen corresponding path program 2 times [2021-11-19 13:58:58,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:58,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126164981] [2021-11-19 13:58:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:58,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:58:58,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:58,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126164981] [2021-11-19 13:58:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126164981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:58:58,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:58:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:58:58,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215759309] [2021-11-19 13:58:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:58:58,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:58:58,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:58:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:58,200 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) [2021-11-19 13:58:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:58,557 INFO L93 Difference]: Finished difference Result 387 states and 714 transitions. [2021-11-19 13:58:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:58:58,558 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 [2021-11-19 13:58:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:58,562 INFO L225 Difference]: With dead ends: 387 [2021-11-19 13:58:58,563 INFO L226 Difference]: Without dead ends: 361 [2021-11-19 13:58:58,563 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:58:58,564 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:58:58,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 26 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:58:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-19 13:58:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-11-19 13:58:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 354 states have (on average 1.8700564971751412) internal successors, (662), 360 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:58:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 662 transitions. [2021-11-19 13:58:58,582 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 662 transitions. Word has length 26 [2021-11-19 13:58:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:58,582 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 662 transitions. [2021-11-19 13:58:58,583 INFO L471 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) [2021-11-19 13:58:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 662 transitions. [2021-11-19 13:58:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 13:58:58,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:58,584 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:58,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:58:58,585 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -526483714, now seen corresponding path program 1 times [2021-11-19 13:58:58,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:58,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130138521] [2021-11-19 13:58:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:58,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:58:58,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:58,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130138521] [2021-11-19 13:58:58,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130138521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:58:58,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:58:58,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:58:58,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172505798] [2021-11-19 13:58:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:58:58,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:58:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:58:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:58:58,701 INFO L87 Difference]: Start difference. First operand 361 states and 662 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) [2021-11-19 13:58:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:58:58,986 INFO L93 Difference]: Finished difference Result 420 states and 770 transitions. [2021-11-19 13:58:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:58:58,987 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 [2021-11-19 13:58:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:58:58,991 INFO L225 Difference]: With dead ends: 420 [2021-11-19 13:58:58,991 INFO L226 Difference]: Without dead ends: 394 [2021-11-19 13:58:58,991 INFO L932 BasicCegarLoop]: 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 [2021-11-19 13:58:58,992 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:58:58,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 16 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:58:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-19 13:58:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 386. [2021-11-19 13:58:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 379 states have (on average 1.8522427440633245) internal successors, (702), 385 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:58:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 702 transitions. [2021-11-19 13:58:59,010 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 702 transitions. Word has length 26 [2021-11-19 13:58:59,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:58:59,011 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 702 transitions. [2021-11-19 13:58:59,011 INFO L471 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) [2021-11-19 13:58:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 702 transitions. [2021-11-19 13:58:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:58:59,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:58:59,013 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:58:59,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:58:59,013 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:58:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:58:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1037894379, now seen corresponding path program 1 times [2021-11-19 13:58:59,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:58:59,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968301932] [2021-11-19 13:58:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:58:59,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:58:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:58:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:58:59,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:58:59,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968301932] [2021-11-19 13:58:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968301932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:58:59,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:58:59,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:58:59,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37710874] [2021-11-19 13:58:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:58:59,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:58:59,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:58:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:58:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:58:59,537 INFO L87 Difference]: Start difference. First operand 386 states and 702 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) [2021-11-19 13:59:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:00,201 INFO L93 Difference]: Finished difference Result 762 states and 1390 transitions. [2021-11-19 13:59:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:59:00,201 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 [2021-11-19 13:59:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:00,208 INFO L225 Difference]: With dead ends: 762 [2021-11-19 13:59:00,208 INFO L226 Difference]: Without dead ends: 762 [2021-11-19 13:59:00,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:59:00,209 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 99 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:00,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 15 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-11-19 13:59:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 438. [2021-11-19 13:59:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 431 states have (on average 1.8700696055684454) internal successors, (806), 437 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 806 transitions. [2021-11-19 13:59:00,232 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 806 transitions. Word has length 29 [2021-11-19 13:59:00,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:00,232 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 806 transitions. [2021-11-19 13:59:00,233 INFO L471 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) [2021-11-19 13:59:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 806 transitions. [2021-11-19 13:59:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:00,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:00,234 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:00,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 13:59:00,235 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:00,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash -354571102, now seen corresponding path program 1 times [2021-11-19 13:59:00,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:00,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197727095] [2021-11-19 13:59:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:00,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:00,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:00,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197727095] [2021-11-19 13:59:00,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197727095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:00,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:00,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:00,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220728930] [2021-11-19 13:59:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:00,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:00,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:00,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:00,429 INFO L87 Difference]: Start difference. First operand 438 states and 806 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) [2021-11-19 13:59:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:01,438 INFO L93 Difference]: Finished difference Result 742 states and 1357 transitions. [2021-11-19 13:59:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:59:01,439 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 [2021-11-19 13:59:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:01,445 INFO L225 Difference]: With dead ends: 742 [2021-11-19 13:59:01,445 INFO L226 Difference]: Without dead ends: 742 [2021-11-19 13:59:01,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:59:01,447 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 113 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:01,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 19 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:59:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-19 13:59:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 459. [2021-11-19 13:59:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 452 states have (on average 1.8761061946902655) internal successors, (848), 458 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:01,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 848 transitions. [2021-11-19 13:59:01,475 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 848 transitions. Word has length 29 [2021-11-19 13:59:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:01,475 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 848 transitions. [2021-11-19 13:59:01,475 INFO L471 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) [2021-11-19 13:59:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 848 transitions. [2021-11-19 13:59:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:01,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:01,478 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:01,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 13:59:01,479 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -435006802, now seen corresponding path program 2 times [2021-11-19 13:59:01,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:01,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789824392] [2021-11-19 13:59:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:01,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:01,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:01,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789824392] [2021-11-19 13:59:01,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789824392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:01,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:01,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:01,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353570137] [2021-11-19 13:59:01,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:01,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:01,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:01,793 INFO L87 Difference]: Start difference. First operand 459 states and 848 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) [2021-11-19 13:59:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:02,529 INFO L93 Difference]: Finished difference Result 756 states and 1382 transitions. [2021-11-19 13:59:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:02,530 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 [2021-11-19 13:59:02,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:02,536 INFO L225 Difference]: With dead ends: 756 [2021-11-19 13:59:02,536 INFO L226 Difference]: Without dead ends: 756 [2021-11-19 13:59:02,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:59:02,538 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 97 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:02,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 19 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-19 13:59:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 468. [2021-11-19 13:59:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 461 states have (on average 1.880694143167028) internal successors, (867), 467 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 867 transitions. [2021-11-19 13:59:02,562 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 867 transitions. Word has length 29 [2021-11-19 13:59:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:02,563 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 867 transitions. [2021-11-19 13:59:02,563 INFO L471 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) [2021-11-19 13:59:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 867 transitions. [2021-11-19 13:59:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:02,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:02,565 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:02,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:59:02,565 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -438206932, now seen corresponding path program 3 times [2021-11-19 13:59:02,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:02,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133720093] [2021-11-19 13:59:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:02,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:02,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:02,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133720093] [2021-11-19 13:59:02,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133720093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:02,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:02,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:02,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155578919] [2021-11-19 13:59:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:02,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:02,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:02,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:02,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:02,875 INFO L87 Difference]: Start difference. First operand 468 states and 867 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) [2021-11-19 13:59:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:03,740 INFO L93 Difference]: Finished difference Result 750 states and 1370 transitions. [2021-11-19 13:59:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:03,740 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 [2021-11-19 13:59:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:03,747 INFO L225 Difference]: With dead ends: 750 [2021-11-19 13:59:03,747 INFO L226 Difference]: Without dead ends: 750 [2021-11-19 13:59:03,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:59:03,749 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 94 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:03,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 19 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:59:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-19 13:59:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 475. [2021-11-19 13:59:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 468 states have (on average 1.8846153846153846) internal successors, (882), 474 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 882 transitions. [2021-11-19 13:59:03,772 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 882 transitions. Word has length 29 [2021-11-19 13:59:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:03,773 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 882 transitions. [2021-11-19 13:59:03,773 INFO L471 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) [2021-11-19 13:59:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 882 transitions. [2021-11-19 13:59:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:03,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:03,775 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:03,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 13:59:03,775 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:03,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash -438258082, now seen corresponding path program 4 times [2021-11-19 13:59:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:03,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403324640] [2021-11-19 13:59:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:03,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:04,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:04,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403324640] [2021-11-19 13:59:04,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403324640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:04,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:04,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:04,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544125999] [2021-11-19 13:59:04,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:04,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:04,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:04,192 INFO L87 Difference]: Start difference. First operand 475 states and 882 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) [2021-11-19 13:59:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:04,898 INFO L93 Difference]: Finished difference Result 746 states and 1362 transitions. [2021-11-19 13:59:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:04,899 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 [2021-11-19 13:59:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:04,905 INFO L225 Difference]: With dead ends: 746 [2021-11-19 13:59:04,905 INFO L226 Difference]: Without dead ends: 746 [2021-11-19 13:59:04,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:59:04,907 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 97 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:04,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 18 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-19 13:59:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 482. [2021-11-19 13:59:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.8757894736842105) internal successors, (891), 481 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 891 transitions. [2021-11-19 13:59:04,928 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 891 transitions. Word has length 29 [2021-11-19 13:59:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:04,929 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 891 transitions. [2021-11-19 13:59:04,929 INFO L471 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) [2021-11-19 13:59:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 891 transitions. [2021-11-19 13:59:04,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:04,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:04,931 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:04,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 13:59:04,931 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 709297808, now seen corresponding path program 5 times [2021-11-19 13:59:04,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:04,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200006789] [2021-11-19 13:59:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:04,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:05,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:05,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200006789] [2021-11-19 13:59:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200006789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:05,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:05,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:05,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028700282] [2021-11-19 13:59:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:05,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:05,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:05,160 INFO L87 Difference]: Start difference. First operand 482 states and 891 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) [2021-11-19 13:59:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:05,936 INFO L93 Difference]: Finished difference Result 507 states and 938 transitions. [2021-11-19 13:59:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:59:05,937 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 [2021-11-19 13:59:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:05,941 INFO L225 Difference]: With dead ends: 507 [2021-11-19 13:59:05,941 INFO L226 Difference]: Without dead ends: 507 [2021-11-19 13:59:05,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:59:05,942 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:05,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 41 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-19 13:59:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 484. [2021-11-19 13:59:05,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 477 states have (on average 1.8763102725366876) internal successors, (895), 483 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 895 transitions. [2021-11-19 13:59:05,959 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 895 transitions. Word has length 29 [2021-11-19 13:59:05,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:05,960 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 895 transitions. [2021-11-19 13:59:05,960 INFO L471 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) [2021-11-19 13:59:05,960 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 895 transitions. [2021-11-19 13:59:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:05,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:05,961 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:05,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 13:59:05,962 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash 706097678, now seen corresponding path program 6 times [2021-11-19 13:59:05,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:05,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903888932] [2021-11-19 13:59:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:05,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:06,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:06,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903888932] [2021-11-19 13:59:06,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903888932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:06,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:06,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:06,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782680579] [2021-11-19 13:59:06,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:06,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:06,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:06,218 INFO L87 Difference]: Start difference. First operand 484 states and 895 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) [2021-11-19 13:59:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:06,704 INFO L93 Difference]: Finished difference Result 518 states and 957 transitions. [2021-11-19 13:59:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:06,704 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 [2021-11-19 13:59:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:06,709 INFO L225 Difference]: With dead ends: 518 [2021-11-19 13:59:06,709 INFO L226 Difference]: Without dead ends: 518 [2021-11-19 13:59:06,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:59:06,710 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:06,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 32 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:59:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-19 13:59:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 488. [2021-11-19 13:59:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 481 states have (on average 1.8773388773388773) internal successors, (903), 487 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 903 transitions. [2021-11-19 13:59:06,730 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 903 transitions. Word has length 29 [2021-11-19 13:59:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:06,730 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 903 transitions. [2021-11-19 13:59:06,730 INFO L471 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) [2021-11-19 13:59:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 903 transitions. [2021-11-19 13:59:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:06,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:06,732 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:06,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 13:59:06,732 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash 706046528, now seen corresponding path program 7 times [2021-11-19 13:59:06,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:06,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863349176] [2021-11-19 13:59:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:06,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:07,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:07,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863349176] [2021-11-19 13:59:07,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863349176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:07,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:07,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:07,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069321202] [2021-11-19 13:59:07,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:07,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:07,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:07,123 INFO L87 Difference]: Start difference. First operand 488 states and 903 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) [2021-11-19 13:59:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:07,620 INFO L93 Difference]: Finished difference Result 516 states and 953 transitions. [2021-11-19 13:59:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:07,620 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 [2021-11-19 13:59:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:07,624 INFO L225 Difference]: With dead ends: 516 [2021-11-19 13:59:07,624 INFO L226 Difference]: Without dead ends: 516 [2021-11-19 13:59:07,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:59:07,625 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:07,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:59:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-19 13:59:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2021-11-19 13:59:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.8757894736842105) internal successors, (891), 481 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 891 transitions. [2021-11-19 13:59:07,641 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 891 transitions. Word has length 29 [2021-11-19 13:59:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:07,642 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 891 transitions. [2021-11-19 13:59:07,642 INFO L471 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) [2021-11-19 13:59:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 891 transitions. [2021-11-19 13:59:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:07,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:07,644 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:07,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 13:59:07,644 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1036126962, now seen corresponding path program 8 times [2021-11-19 13:59:07,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:07,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740332110] [2021-11-19 13:59:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:07,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:07,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:07,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740332110] [2021-11-19 13:59:07,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740332110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:07,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:07,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:07,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039905432] [2021-11-19 13:59:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:07,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:07,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:07,876 INFO L87 Difference]: Start difference. First operand 482 states and 891 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) [2021-11-19 13:59:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:08,417 INFO L93 Difference]: Finished difference Result 497 states and 918 transitions. [2021-11-19 13:59:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:08,418 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 [2021-11-19 13:59:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:08,421 INFO L225 Difference]: With dead ends: 497 [2021-11-19 13:59:08,421 INFO L226 Difference]: Without dead ends: 497 [2021-11-19 13:59:08,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:59:08,422 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:08,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 39 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:59:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-19 13:59:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 484. [2021-11-19 13:59:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 477 states have (on average 1.8763102725366876) internal successors, (895), 483 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 895 transitions. [2021-11-19 13:59:08,439 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 895 transitions. Word has length 29 [2021-11-19 13:59:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:08,439 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 895 transitions. [2021-11-19 13:59:08,440 INFO L471 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) [2021-11-19 13:59:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 895 transitions. [2021-11-19 13:59:08,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:08,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:08,441 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:08,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 13:59:08,442 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:08,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:08,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1036178112, now seen corresponding path program 9 times [2021-11-19 13:59:08,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:08,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024400347] [2021-11-19 13:59:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:08,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:08,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:08,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024400347] [2021-11-19 13:59:08,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024400347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:08,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:08,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:08,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055582839] [2021-11-19 13:59:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:08,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:08,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:08,761 INFO L87 Difference]: Start difference. First operand 484 states and 895 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) [2021-11-19 13:59:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:09,662 INFO L93 Difference]: Finished difference Result 496 states and 916 transitions. [2021-11-19 13:59:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:09,662 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 [2021-11-19 13:59:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:09,666 INFO L225 Difference]: With dead ends: 496 [2021-11-19 13:59:09,666 INFO L226 Difference]: Without dead ends: 496 [2021-11-19 13:59:09,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:59:09,668 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:09,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 41 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:59:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-19 13:59:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 482. [2021-11-19 13:59:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.8757894736842105) internal successors, (891), 481 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 891 transitions. [2021-11-19 13:59:09,685 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 891 transitions. Word has length 29 [2021-11-19 13:59:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:09,686 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 891 transitions. [2021-11-19 13:59:09,686 INFO L471 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) [2021-11-19 13:59:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 891 transitions. [2021-11-19 13:59:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:09,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:09,687 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:09,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 13:59:09,689 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash 542499302, now seen corresponding path program 10 times [2021-11-19 13:59:09,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:09,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744925521] [2021-11-19 13:59:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:09,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:09,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:09,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744925521] [2021-11-19 13:59:09,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744925521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:09,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:09,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:09,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294134916] [2021-11-19 13:59:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:09,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:09,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:09,953 INFO L87 Difference]: Start difference. First operand 482 states and 891 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) [2021-11-19 13:59:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:10,842 INFO L93 Difference]: Finished difference Result 506 states and 933 transitions. [2021-11-19 13:59:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:59:10,842 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 [2021-11-19 13:59:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:10,846 INFO L225 Difference]: With dead ends: 506 [2021-11-19 13:59:10,846 INFO L226 Difference]: Without dead ends: 506 [2021-11-19 13:59:10,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:59:10,847 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 46 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:10,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 44 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:59:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-19 13:59:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 484. [2021-11-19 13:59:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 477 states have (on average 1.8763102725366876) internal successors, (895), 483 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 895 transitions. [2021-11-19 13:59:10,862 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 895 transitions. Word has length 29 [2021-11-19 13:59:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:10,863 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 895 transitions. [2021-11-19 13:59:10,863 INFO L471 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) [2021-11-19 13:59:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 895 transitions. [2021-11-19 13:59:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:10,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:10,864 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:10,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 13:59:10,865 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash 542448152, now seen corresponding path program 11 times [2021-11-19 13:59:10,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:10,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858035610] [2021-11-19 13:59:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:10,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:11,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:11,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858035610] [2021-11-19 13:59:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858035610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:11,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:11,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:11,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251415237] [2021-11-19 13:59:11,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:11,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:11,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:11,159 INFO L87 Difference]: Start difference. First operand 484 states and 895 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) [2021-11-19 13:59:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:11,703 INFO L93 Difference]: Finished difference Result 505 states and 931 transitions. [2021-11-19 13:59:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:11,704 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 [2021-11-19 13:59:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:11,706 INFO L225 Difference]: With dead ends: 505 [2021-11-19 13:59:11,706 INFO L226 Difference]: Without dead ends: 505 [2021-11-19 13:59:11,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:59:11,707 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:11,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 35 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:59:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-19 13:59:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 480. [2021-11-19 13:59:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 473 states have (on average 1.8752642706131077) internal successors, (887), 479 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 887 transitions. [2021-11-19 13:59:11,722 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 887 transitions. Word has length 29 [2021-11-19 13:59:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:11,722 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 887 transitions. [2021-11-19 13:59:11,722 INFO L471 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) [2021-11-19 13:59:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 887 transitions. [2021-11-19 13:59:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:11,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:11,724 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:11,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 13:59:11,724 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:11,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1307059754, now seen corresponding path program 1 times [2021-11-19 13:59:11,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:11,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513965117] [2021-11-19 13:59:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:11,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:12,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:12,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513965117] [2021-11-19 13:59:12,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513965117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:12,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:12,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:12,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006923056] [2021-11-19 13:59:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:12,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:12,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:12,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:12,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:12,331 INFO L87 Difference]: Start difference. First operand 480 states and 887 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) [2021-11-19 13:59:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:12,798 INFO L93 Difference]: Finished difference Result 534 states and 986 transitions. [2021-11-19 13:59:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:12,799 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 [2021-11-19 13:59:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:12,802 INFO L225 Difference]: With dead ends: 534 [2021-11-19 13:59:12,802 INFO L226 Difference]: Without dead ends: 532 [2021-11-19 13:59:12,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:12,803 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:12,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 41 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:59:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-19 13:59:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 492. [2021-11-19 13:59:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 485 states have (on average 1.8762886597938144) internal successors, (910), 491 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 910 transitions. [2021-11-19 13:59:12,820 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 910 transitions. Word has length 29 [2021-11-19 13:59:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:12,820 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 910 transitions. [2021-11-19 13:59:12,821 INFO L471 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) [2021-11-19 13:59:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 910 transitions. [2021-11-19 13:59:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:12,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:12,822 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:12,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 13:59:12,823 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1089416730, now seen corresponding path program 2 times [2021-11-19 13:59:12,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:12,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092241898] [2021-11-19 13:59:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:12,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:13,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:13,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092241898] [2021-11-19 13:59:13,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092241898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:13,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:13,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:13,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522307758] [2021-11-19 13:59:13,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:13,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:13,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:13,582 INFO L87 Difference]: Start difference. First operand 492 states and 910 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) [2021-11-19 13:59:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:14,362 INFO L93 Difference]: Finished difference Result 575 states and 1064 transitions. [2021-11-19 13:59:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:14,363 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 [2021-11-19 13:59:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:14,366 INFO L225 Difference]: With dead ends: 575 [2021-11-19 13:59:14,366 INFO L226 Difference]: Without dead ends: 571 [2021-11-19 13:59:14,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:59:14,367 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:14,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 37 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:14,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-19 13:59:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 507. [2021-11-19 13:59:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 500 states have (on average 1.878) internal successors, (939), 506 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 939 transitions. [2021-11-19 13:59:14,384 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 939 transitions. Word has length 29 [2021-11-19 13:59:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:14,384 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 939 transitions. [2021-11-19 13:59:14,385 INFO L471 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) [2021-11-19 13:59:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 939 transitions. [2021-11-19 13:59:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:14,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:14,386 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:14,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 13:59:14,387 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -157627034, now seen corresponding path program 3 times [2021-11-19 13:59:14,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:14,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146848301] [2021-11-19 13:59:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:14,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:15,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:15,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146848301] [2021-11-19 13:59:15,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146848301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:15,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:15,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:15,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750908221] [2021-11-19 13:59:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:15,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:15,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:15,119 INFO L87 Difference]: Start difference. First operand 507 states and 939 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) [2021-11-19 13:59:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:16,041 INFO L93 Difference]: Finished difference Result 611 states and 1133 transitions. [2021-11-19 13:59:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:16,042 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 [2021-11-19 13:59:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:16,045 INFO L225 Difference]: With dead ends: 611 [2021-11-19 13:59:16,045 INFO L226 Difference]: Without dead ends: 605 [2021-11-19 13:59:16,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:59:16,047 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:16,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 35 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:59:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-19 13:59:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 522. [2021-11-19 13:59:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 515 states have (on average 1.879611650485437) internal successors, (968), 521 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 968 transitions. [2021-11-19 13:59:16,064 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 968 transitions. Word has length 29 [2021-11-19 13:59:16,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:16,064 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 968 transitions. [2021-11-19 13:59:16,065 INFO L471 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) [2021-11-19 13:59:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 968 transitions. [2021-11-19 13:59:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:16,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:16,066 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:16,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 13:59:16,067 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1711000886, now seen corresponding path program 4 times [2021-11-19 13:59:16,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:16,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541013998] [2021-11-19 13:59:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:16,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:16,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:16,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541013998] [2021-11-19 13:59:16,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541013998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:16,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:16,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:16,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907117694] [2021-11-19 13:59:16,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:16,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:16,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:16,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:16,823 INFO L87 Difference]: Start difference. First operand 522 states and 968 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) [2021-11-19 13:59:17,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:17,749 INFO L93 Difference]: Finished difference Result 647 states and 1202 transitions. [2021-11-19 13:59:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:17,749 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 [2021-11-19 13:59:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:17,754 INFO L225 Difference]: With dead ends: 647 [2021-11-19 13:59:17,754 INFO L226 Difference]: Without dead ends: 639 [2021-11-19 13:59:17,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:59:17,755 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:17,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 30 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:59:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-19 13:59:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 537. [2021-11-19 13:59:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 530 states have (on average 1.881132075471698) internal successors, (997), 536 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 997 transitions. [2021-11-19 13:59:17,773 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 997 transitions. Word has length 29 [2021-11-19 13:59:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:17,774 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 997 transitions. [2021-11-19 13:59:17,774 INFO L471 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) [2021-11-19 13:59:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 997 transitions. [2021-11-19 13:59:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:17,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:17,775 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:17,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 13:59:17,776 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:17,777 INFO L85 PathProgramCache]: Analyzing trace with hash 132337118, now seen corresponding path program 5 times [2021-11-19 13:59:17,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:17,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517613144] [2021-11-19 13:59:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:17,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:18,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:18,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517613144] [2021-11-19 13:59:18,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517613144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:18,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:18,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:18,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252096145] [2021-11-19 13:59:18,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:18,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:18,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:18,540 INFO L87 Difference]: Start difference. First operand 537 states and 997 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) [2021-11-19 13:59:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:19,288 INFO L93 Difference]: Finished difference Result 795 states and 1453 transitions. [2021-11-19 13:59:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:59:19,288 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 [2021-11-19 13:59:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:19,293 INFO L225 Difference]: With dead ends: 795 [2021-11-19 13:59:19,293 INFO L226 Difference]: Without dead ends: 787 [2021-11-19 13:59:19,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:59:19,294 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 101 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:19,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 18 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-19 13:59:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 514. [2021-11-19 13:59:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 507 states have (on average 1.8757396449704142) internal successors, (951), 513 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 951 transitions. [2021-11-19 13:59:19,314 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 951 transitions. Word has length 29 [2021-11-19 13:59:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:19,314 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 951 transitions. [2021-11-19 13:59:19,315 INFO L471 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) [2021-11-19 13:59:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 951 transitions. [2021-11-19 13:59:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:19,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:19,316 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:19,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 13:59:19,317 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1760145204, now seen corresponding path program 1 times [2021-11-19 13:59:19,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:19,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836568931] [2021-11-19 13:59:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:19,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:19,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:19,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836568931] [2021-11-19 13:59:19,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836568931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:19,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:19,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:19,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996947884] [2021-11-19 13:59:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:19,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:19,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:19,639 INFO L87 Difference]: Start difference. First operand 514 states and 951 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) [2021-11-19 13:59:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:20,232 INFO L93 Difference]: Finished difference Result 707 states and 1286 transitions. [2021-11-19 13:59:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:59:20,233 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 [2021-11-19 13:59:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:20,238 INFO L225 Difference]: With dead ends: 707 [2021-11-19 13:59:20,239 INFO L226 Difference]: Without dead ends: 707 [2021-11-19 13:59:20,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:59:20,256 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 85 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:20,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 18 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-19 13:59:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 524. [2021-11-19 13:59:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 517 states have (on average 1.8684719535783365) internal successors, (966), 523 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 966 transitions. [2021-11-19 13:59:20,304 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 966 transitions. Word has length 29 [2021-11-19 13:59:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:20,304 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 966 transitions. [2021-11-19 13:59:20,305 INFO L471 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) [2021-11-19 13:59:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 966 transitions. [2021-11-19 13:59:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:20,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:20,305 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:20,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 13:59:20,306 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1034315567, now seen corresponding path program 2 times [2021-11-19 13:59:20,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:20,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563521639] [2021-11-19 13:59:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:20,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:20,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:20,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563521639] [2021-11-19 13:59:20,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563521639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:20,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:20,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:20,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706541567] [2021-11-19 13:59:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:20,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:20,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:20,707 INFO L87 Difference]: Start difference. First operand 524 states and 966 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) [2021-11-19 13:59:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:21,188 INFO L93 Difference]: Finished difference Result 756 states and 1380 transitions. [2021-11-19 13:59:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:21,189 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 [2021-11-19 13:59:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:21,192 INFO L225 Difference]: With dead ends: 756 [2021-11-19 13:59:21,193 INFO L226 Difference]: Without dead ends: 756 [2021-11-19 13:59:21,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:21,194 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:21,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 8 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:59:21,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-19 13:59:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 557. [2021-11-19 13:59:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 550 states have (on average 1.8763636363636365) internal successors, (1032), 556 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1032 transitions. [2021-11-19 13:59:21,212 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1032 transitions. Word has length 29 [2021-11-19 13:59:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:21,212 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 1032 transitions. [2021-11-19 13:59:21,212 INFO L471 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) [2021-11-19 13:59:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1032 transitions. [2021-11-19 13:59:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:21,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:21,214 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:21,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 13:59:21,214 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash 165921536, now seen corresponding path program 12 times [2021-11-19 13:59:21,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:21,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546573319] [2021-11-19 13:59:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:21,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:21,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:21,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546573319] [2021-11-19 13:59:21,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546573319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:21,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:21,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:21,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16429055] [2021-11-19 13:59:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:21,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:21,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:21,393 INFO L87 Difference]: Start difference. First operand 557 states and 1032 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) [2021-11-19 13:59:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:22,212 INFO L93 Difference]: Finished difference Result 744 states and 1363 transitions. [2021-11-19 13:59:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:59:22,212 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 [2021-11-19 13:59:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:22,216 INFO L225 Difference]: With dead ends: 744 [2021-11-19 13:59:22,216 INFO L226 Difference]: Without dead ends: 744 [2021-11-19 13:59:22,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:59:22,217 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:22,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 5 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-11-19 13:59:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 555. [2021-11-19 13:59:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 548 states have (on average 1.8759124087591241) internal successors, (1028), 554 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1028 transitions. [2021-11-19 13:59:22,233 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1028 transitions. Word has length 29 [2021-11-19 13:59:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:22,234 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1028 transitions. [2021-11-19 13:59:22,234 INFO L471 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) [2021-11-19 13:59:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1028 transitions. [2021-11-19 13:59:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:22,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:22,236 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:22,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 13:59:22,236 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash 85485836, now seen corresponding path program 13 times [2021-11-19 13:59:22,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:22,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266231977] [2021-11-19 13:59:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:22,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:22,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:22,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266231977] [2021-11-19 13:59:22,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266231977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:22,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:22,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:22,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350134617] [2021-11-19 13:59:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:22,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:22,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:22,460 INFO L87 Difference]: Start difference. First operand 555 states and 1028 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) [2021-11-19 13:59:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:23,050 INFO L93 Difference]: Finished difference Result 731 states and 1337 transitions. [2021-11-19 13:59:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:23,051 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 [2021-11-19 13:59:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:23,058 INFO L225 Difference]: With dead ends: 731 [2021-11-19 13:59:23,058 INFO L226 Difference]: Without dead ends: 731 [2021-11-19 13:59:23,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:59:23,059 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:23,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 8 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-19 13:59:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 553. [2021-11-19 13:59:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 546 states have (on average 1.8754578754578755) internal successors, (1024), 552 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1024 transitions. [2021-11-19 13:59:23,079 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1024 transitions. Word has length 29 [2021-11-19 13:59:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:23,080 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 1024 transitions. [2021-11-19 13:59:23,080 INFO L471 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) [2021-11-19 13:59:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1024 transitions. [2021-11-19 13:59:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:23,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:23,082 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:23,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 13:59:23,082 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash 82285706, now seen corresponding path program 14 times [2021-11-19 13:59:23,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:23,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007605621] [2021-11-19 13:59:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:23,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:23,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:23,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007605621] [2021-11-19 13:59:23,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007605621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:23,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:23,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:23,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232124851] [2021-11-19 13:59:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:23,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:23,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:23,410 INFO L87 Difference]: Start difference. First operand 553 states and 1024 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) [2021-11-19 13:59:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:24,069 INFO L93 Difference]: Finished difference Result 725 states and 1325 transitions. [2021-11-19 13:59:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:24,070 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 [2021-11-19 13:59:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:24,091 INFO L225 Difference]: With dead ends: 725 [2021-11-19 13:59:24,091 INFO L226 Difference]: Without dead ends: 725 [2021-11-19 13:59:24,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:24,092 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 71 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:24,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 8 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-19 13:59:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 550. [2021-11-19 13:59:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 543 states have (on average 1.8747697974217312) internal successors, (1018), 549 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1018 transitions. [2021-11-19 13:59:24,108 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1018 transitions. Word has length 29 [2021-11-19 13:59:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:24,109 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 1018 transitions. [2021-11-19 13:59:24,109 INFO L471 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) [2021-11-19 13:59:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1018 transitions. [2021-11-19 13:59:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:24,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:24,111 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:24,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 13:59:24,111 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 82234556, now seen corresponding path program 15 times [2021-11-19 13:59:24,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:24,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820492278] [2021-11-19 13:59:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:24,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:24,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:24,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820492278] [2021-11-19 13:59:24,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820492278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:24,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:24,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:24,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791399082] [2021-11-19 13:59:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:24,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:24,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:24,443 INFO L87 Difference]: Start difference. First operand 550 states and 1018 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) [2021-11-19 13:59:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:24,865 INFO L93 Difference]: Finished difference Result 721 states and 1317 transitions. [2021-11-19 13:59:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:59:24,866 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 [2021-11-19 13:59:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:24,871 INFO L225 Difference]: With dead ends: 721 [2021-11-19 13:59:24,871 INFO L226 Difference]: Without dead ends: 721 [2021-11-19 13:59:24,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:24,872 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:24,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 8 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:59:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-11-19 13:59:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 528. [2021-11-19 13:59:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 521 states have (on average 1.873320537428023) internal successors, (976), 527 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 976 transitions. [2021-11-19 13:59:24,888 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 976 transitions. Word has length 29 [2021-11-19 13:59:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:24,889 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 976 transitions. [2021-11-19 13:59:24,889 INFO L471 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) [2021-11-19 13:59:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 976 transitions. [2021-11-19 13:59:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:24,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:24,890 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:24,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 13:59:24,891 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 129882652, now seen corresponding path program 6 times [2021-11-19 13:59:24,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:24,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179940012] [2021-11-19 13:59:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:24,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:25,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:25,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179940012] [2021-11-19 13:59:25,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179940012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:25,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:25,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:25,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060244551] [2021-11-19 13:59:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:25,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:25,821 INFO L87 Difference]: Start difference. First operand 528 states and 976 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) [2021-11-19 13:59:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:26,351 INFO L93 Difference]: Finished difference Result 726 states and 1324 transitions. [2021-11-19 13:59:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:59:26,351 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 [2021-11-19 13:59:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:26,355 INFO L225 Difference]: With dead ends: 726 [2021-11-19 13:59:26,355 INFO L226 Difference]: Without dead ends: 718 [2021-11-19 13:59:26,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:26,356 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 90 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:26,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 8 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-19 13:59:26,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 469. [2021-11-19 13:59:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 464 states have (on average 1.8620689655172413) internal successors, (864), 468 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 864 transitions. [2021-11-19 13:59:26,372 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 864 transitions. Word has length 29 [2021-11-19 13:59:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:26,373 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 864 transitions. [2021-11-19 13:59:26,373 INFO L471 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) [2021-11-19 13:59:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 864 transitions. [2021-11-19 13:59:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:26,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:26,374 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:26,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 13:59:26,375 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1757690738, now seen corresponding path program 2 times [2021-11-19 13:59:26,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:26,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878669679] [2021-11-19 13:59:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:26,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:26,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:26,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878669679] [2021-11-19 13:59:26,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878669679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:26,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:26,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:26,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441502872] [2021-11-19 13:59:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:26,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:26,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:26,788 INFO L87 Difference]: Start difference. First operand 469 states and 864 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) [2021-11-19 13:59:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:27,344 INFO L93 Difference]: Finished difference Result 710 states and 1292 transitions. [2021-11-19 13:59:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:27,345 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 [2021-11-19 13:59:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:27,348 INFO L225 Difference]: With dead ends: 710 [2021-11-19 13:59:27,348 INFO L226 Difference]: Without dead ends: 710 [2021-11-19 13:59:27,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:27,349 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 70 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:27,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 8 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-19 13:59:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 393. [2021-11-19 13:59:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 388 states have (on average 1.842783505154639) internal successors, (715), 392 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 715 transitions. [2021-11-19 13:59:27,362 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 715 transitions. Word has length 29 [2021-11-19 13:59:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:27,363 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 715 transitions. [2021-11-19 13:59:27,363 INFO L471 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) [2021-11-19 13:59:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 715 transitions. [2021-11-19 13:59:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:27,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:27,364 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:27,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 13:59:27,365 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash -146127091, now seen corresponding path program 3 times [2021-11-19 13:59:27,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:27,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105300052] [2021-11-19 13:59:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:27,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:28,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:28,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105300052] [2021-11-19 13:59:28,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105300052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:28,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:28,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:28,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047137415] [2021-11-19 13:59:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:28,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:28,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:28,224 INFO L87 Difference]: Start difference. First operand 393 states and 715 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) [2021-11-19 13:59:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:28,874 INFO L93 Difference]: Finished difference Result 536 states and 981 transitions. [2021-11-19 13:59:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:28,874 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 [2021-11-19 13:59:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:28,877 INFO L225 Difference]: With dead ends: 536 [2021-11-19 13:59:28,877 INFO L226 Difference]: Without dead ends: 528 [2021-11-19 13:59:28,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:28,878 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 61 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:28,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 8 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-19 13:59:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 439. [2021-11-19 13:59:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 434 states have (on average 1.8525345622119815) internal successors, (804), 438 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 804 transitions. [2021-11-19 13:59:28,890 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 804 transitions. Word has length 29 [2021-11-19 13:59:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:28,890 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 804 transitions. [2021-11-19 13:59:28,891 INFO L471 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) [2021-11-19 13:59:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 804 transitions. [2021-11-19 13:59:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:28,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:28,892 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:28,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 13:59:28,892 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1471555917, now seen corresponding path program 4 times [2021-11-19 13:59:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:28,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429093639] [2021-11-19 13:59:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:28,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:29,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:29,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429093639] [2021-11-19 13:59:29,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429093639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:29,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:29,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:29,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384876378] [2021-11-19 13:59:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:29,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:29,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:29,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:29,801 INFO L87 Difference]: Start difference. First operand 439 states and 804 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) [2021-11-19 13:59:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:30,502 INFO L93 Difference]: Finished difference Result 554 states and 1016 transitions. [2021-11-19 13:59:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:30,503 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 [2021-11-19 13:59:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:30,506 INFO L225 Difference]: With dead ends: 554 [2021-11-19 13:59:30,506 INFO L226 Difference]: Without dead ends: 548 [2021-11-19 13:59:30,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:30,507 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:30,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 8 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-19 13:59:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 429. [2021-11-19 13:59:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 424 states have (on average 1.849056603773585) internal successors, (784), 428 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 784 transitions. [2021-11-19 13:59:30,519 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 784 transitions. Word has length 29 [2021-11-19 13:59:30,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:30,519 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 784 transitions. [2021-11-19 13:59:30,519 INFO L471 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) [2021-11-19 13:59:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 784 transitions. [2021-11-19 13:59:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:30,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:30,521 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:30,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 13:59:30,521 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1101795157, now seen corresponding path program 5 times [2021-11-19 13:59:30,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:30,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711537540] [2021-11-19 13:59:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:30,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:31,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:31,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711537540] [2021-11-19 13:59:31,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711537540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:31,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:31,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:31,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363304641] [2021-11-19 13:59:31,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:31,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:31,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:31,386 INFO L87 Difference]: Start difference. First operand 429 states and 784 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) [2021-11-19 13:59:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:32,056 INFO L93 Difference]: Finished difference Result 511 states and 932 transitions. [2021-11-19 13:59:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:32,057 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 [2021-11-19 13:59:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:32,059 INFO L225 Difference]: With dead ends: 511 [2021-11-19 13:59:32,059 INFO L226 Difference]: Without dead ends: 507 [2021-11-19 13:59:32,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:32,060 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 70 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:32,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 8 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:59:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-19 13:59:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 418. [2021-11-19 13:59:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 413 states have (on average 1.8450363196125907) internal successors, (762), 417 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:32,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 762 transitions. [2021-11-19 13:59:32,070 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 762 transitions. Word has length 29 [2021-11-19 13:59:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:32,070 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 762 transitions. [2021-11-19 13:59:32,071 INFO L471 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) [2021-11-19 13:59:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 762 transitions. [2021-11-19 13:59:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:32,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:32,072 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:32,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 13:59:32,072 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1327906197, now seen corresponding path program 6 times [2021-11-19 13:59:32,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:32,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300491861] [2021-11-19 13:59:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:32,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:33,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:33,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300491861] [2021-11-19 13:59:33,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300491861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:33,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:33,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518764417] [2021-11-19 13:59:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:33,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:33,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:33,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:33,018 INFO L87 Difference]: Start difference. First operand 418 states and 762 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) [2021-11-19 13:59:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:33,646 INFO L93 Difference]: Finished difference Result 462 states and 841 transitions. [2021-11-19 13:59:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:33,646 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 [2021-11-19 13:59:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:33,650 INFO L225 Difference]: With dead ends: 462 [2021-11-19 13:59:33,650 INFO L226 Difference]: Without dead ends: 460 [2021-11-19 13:59:33,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:33,651 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 63 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:33,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 8 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-19 13:59:33,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 408. [2021-11-19 13:59:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 403 states have (on average 1.8411910669975187) internal successors, (742), 407 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 742 transitions. [2021-11-19 13:59:33,663 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 742 transitions. Word has length 29 [2021-11-19 13:59:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:33,663 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 742 transitions. [2021-11-19 13:59:33,663 INFO L471 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) [2021-11-19 13:59:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 742 transitions. [2021-11-19 13:59:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:33,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:33,665 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:33,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 13:59:33,665 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:33,666 INFO L85 PathProgramCache]: Analyzing trace with hash 802660946, now seen corresponding path program 3 times [2021-11-19 13:59:33,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:33,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919077632] [2021-11-19 13:59:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:33,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:34,082 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:34,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919077632] [2021-11-19 13:59:34,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919077632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:34,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:34,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:34,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98422713] [2021-11-19 13:59:34,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:34,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:34,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:34,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:34,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:34,083 INFO L87 Difference]: Start difference. First operand 408 states and 742 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) [2021-11-19 13:59:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:34,494 INFO L93 Difference]: Finished difference Result 422 states and 763 transitions. [2021-11-19 13:59:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:34,494 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 [2021-11-19 13:59:34,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:34,497 INFO L225 Difference]: With dead ends: 422 [2021-11-19 13:59:34,497 INFO L226 Difference]: Without dead ends: 422 [2021-11-19 13:59:34,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:34,498 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:34,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 8 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:59:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-19 13:59:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 408. [2021-11-19 13:59:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 403 states have (on average 1.8411910669975187) internal successors, (742), 407 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 742 transitions. [2021-11-19 13:59:34,508 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 742 transitions. Word has length 29 [2021-11-19 13:59:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:34,509 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 742 transitions. [2021-11-19 13:59:34,509 INFO L471 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) [2021-11-19 13:59:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 742 transitions. [2021-11-19 13:59:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:34,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:34,517 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:34,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 13:59:34,518 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:34,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash 746355956, now seen corresponding path program 4 times [2021-11-19 13:59:34,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:34,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436737140] [2021-11-19 13:59:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:34,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:34,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:34,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436737140] [2021-11-19 13:59:34,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436737140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:34,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:34,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:34,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779926505] [2021-11-19 13:59:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:34,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:34,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:35,000 INFO L87 Difference]: Start difference. First operand 408 states and 742 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) [2021-11-19 13:59:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:35,582 INFO L93 Difference]: Finished difference Result 417 states and 754 transitions. [2021-11-19 13:59:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:35,583 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 [2021-11-19 13:59:35,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:35,585 INFO L225 Difference]: With dead ends: 417 [2021-11-19 13:59:35,585 INFO L226 Difference]: Without dead ends: 417 [2021-11-19 13:59:35,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:35,586 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:35,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 8 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:59:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-19 13:59:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 408. [2021-11-19 13:59:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 403 states have (on average 1.8411910669975187) internal successors, (742), 407 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 742 transitions. [2021-11-19 13:59:35,614 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 742 transitions. Word has length 29 [2021-11-19 13:59:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:35,615 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 742 transitions. [2021-11-19 13:59:35,625 INFO L471 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) [2021-11-19 13:59:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 742 transitions. [2021-11-19 13:59:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:35,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:35,626 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:35,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 13:59:35,627 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1719146030, now seen corresponding path program 5 times [2021-11-19 13:59:35,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:35,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489633131] [2021-11-19 13:59:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:35,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:36,046 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:36,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489633131] [2021-11-19 13:59:36,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489633131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:36,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:36,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:36,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134933379] [2021-11-19 13:59:36,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:36,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:36,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:36,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:36,048 INFO L87 Difference]: Start difference. First operand 408 states and 742 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) [2021-11-19 13:59:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:36,446 INFO L93 Difference]: Finished difference Result 427 states and 773 transitions. [2021-11-19 13:59:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:36,446 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 [2021-11-19 13:59:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:36,449 INFO L225 Difference]: With dead ends: 427 [2021-11-19 13:59:36,449 INFO L226 Difference]: Without dead ends: 427 [2021-11-19 13:59:36,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:36,450 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:36,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:59:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-19 13:59:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 408. [2021-11-19 13:59:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 403 states have (on average 1.8411910669975187) internal successors, (742), 407 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 742 transitions. [2021-11-19 13:59:36,461 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 742 transitions. Word has length 29 [2021-11-19 13:59:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:36,461 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 742 transitions. [2021-11-19 13:59:36,462 INFO L471 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) [2021-11-19 13:59:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 742 transitions. [2021-11-19 13:59:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 13:59:36,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:36,463 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:36,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 13:59:36,464 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1726876428, now seen corresponding path program 6 times [2021-11-19 13:59:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:36,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675997295] [2021-11-19 13:59:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:36,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:36,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:59:36,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675997295] [2021-11-19 13:59:36,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675997295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:36,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:36,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:59:36,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672785432] [2021-11-19 13:59:36,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:36,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:59:36,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:59:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:59:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:59:36,839 INFO L87 Difference]: Start difference. First operand 408 states and 742 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) [2021-11-19 13:59:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:37,166 INFO L93 Difference]: Finished difference Result 420 states and 762 transitions. [2021-11-19 13:59:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:59:37,167 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 [2021-11-19 13:59:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:37,168 INFO L225 Difference]: With dead ends: 420 [2021-11-19 13:59:37,169 INFO L226 Difference]: Without dead ends: 420 [2021-11-19 13:59:37,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:37,170 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:37,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:59:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-19 13:59:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 395. [2021-11-19 13:59:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 390 states have (on average 1.8435897435897435) internal successors, (719), 394 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:59:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 719 transitions. [2021-11-19 13:59:37,178 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 719 transitions. Word has length 29 [2021-11-19 13:59:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:37,179 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 719 transitions. [2021-11-19 13:59:37,179 INFO L471 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) [2021-11-19 13:59:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 719 transitions. [2021-11-19 13:59:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 13:59:37,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:37,180 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:37,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 13:59:37,180 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 13:59:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2109957341, now seen corresponding path program 1 times [2021-11-19 13:59:37,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:59:37,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408435165] [2021-11-19 13:59:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:37,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:59:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:02:40,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:02:40,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408435165] [2021-11-19 14:02:40,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408435165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:40,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197882144] [2021-11-19 14:02:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:40,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:02:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:02:40,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:02:40,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 14:02:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 14:02:40,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 14:02:40,750 INFO L354 Elim1Store]: treesize reduction 7, result has 53.3 percent of original size [2021-11-19 14:02:40,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2021-11-19 14:02:40,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-19 14:02:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:40,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-19 14:02:40,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-19 14:02:41,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-19 14:02:41,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:02:41,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2021-11-19 14:02:41,463 INFO L354 Elim1Store]: treesize reduction 280, result has 14.1 percent of original size [2021-11-19 14:02:41,464 INFO L388 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 15 case distinctions, treesize of input 76 treesize of output 87 [2021-11-19 14:02:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:02:51,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:55,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:55,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:55,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:55,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:55,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:55,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:02:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:02:55,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197882144] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:55,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:02:55,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 14] total 40 [2021-11-19 14:02:55,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201318001] [2021-11-19 14:02:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:55,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:02:55,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:02:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:02:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1452, Unknown=5, NotChecked=0, Total=1640 [2021-11-19 14:02:55,688 INFO L87 Difference]: Start difference. First operand 395 states and 719 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:00,479 INFO L93 Difference]: Finished difference Result 779 states and 1443 transitions. [2021-11-19 14:03:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:03:00,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:03:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:00,482 INFO L225 Difference]: With dead ends: 779 [2021-11-19 14:03:00,482 INFO L226 Difference]: Without dead ends: 779 [2021-11-19 14:03:00,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=205, Invalid=1768, Unknown=7, NotChecked=0, Total=1980 [2021-11-19 14:03:00,484 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:00,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 25 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 245 Invalid, 0 Unknown, 335 Unchecked, 0.3s Time] [2021-11-19 14:03:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-11-19 14:03:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 409. [2021-11-19 14:03:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 404 states have (on average 1.849009900990099) internal successors, (747), 408 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 747 transitions. [2021-11-19 14:03:00,499 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 747 transitions. Word has length 30 [2021-11-19 14:03:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:00,500 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 747 transitions. [2021-11-19 14:03:00,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 747 transitions. [2021-11-19 14:03:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:03:00,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:00,501 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:00,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:00,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:00,714 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:03:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2109351911, now seen corresponding path program 2 times [2021-11-19 14:03:00,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:00,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058486988] [2021-11-19 14:03:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:00,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:03:01,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:01,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058486988] [2021-11-19 14:03:01,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058486988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:01,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:01,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:03:01,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077796278] [2021-11-19 14:03:01,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:01,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:03:01,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:03:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:03:01,121 INFO L87 Difference]: Start difference. First operand 409 states and 747 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:01,881 INFO L93 Difference]: Finished difference Result 739 states and 1345 transitions. [2021-11-19 14:03:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:03:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:03:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:01,883 INFO L225 Difference]: With dead ends: 739 [2021-11-19 14:03:01,883 INFO L226 Difference]: Without dead ends: 739 [2021-11-19 14:03:01,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:03:01,884 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 93 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:01,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 14 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:03:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-11-19 14:03:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 453. [2021-11-19 14:03:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 448 states have (on average 1.8638392857142858) internal successors, (835), 452 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 835 transitions. [2021-11-19 14:03:01,897 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 835 transitions. Word has length 30 [2021-11-19 14:03:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:01,898 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 835 transitions. [2021-11-19 14:03:01,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 835 transitions. [2021-11-19 14:03:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:03:01,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:01,899 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:01,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 14:03:01,900 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:03:01,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1455309653, now seen corresponding path program 1 times [2021-11-19 14:03:01,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:01,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840288633] [2021-11-19 14:03:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:01,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:03:02,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840288633] [2021-11-19 14:03:02,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840288633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:03:02,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146328187] [2021-11-19 14:03:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:02,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:02,033 INFO L87 Difference]: Start difference. First operand 453 states and 835 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:02,445 INFO L93 Difference]: Finished difference Result 488 states and 902 transitions. [2021-11-19 14:03:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:03:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:03:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:02,446 INFO L225 Difference]: With dead ends: 488 [2021-11-19 14:03:02,446 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 14:03:02,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:02,447 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:02,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 5 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:03:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 14:03:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 454. [2021-11-19 14:03:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 449 states have (on average 1.864142538975501) internal successors, (837), 453 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 837 transitions. [2021-11-19 14:03:02,459 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 837 transitions. Word has length 30 [2021-11-19 14:03:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:02,459 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 837 transitions. [2021-11-19 14:03:02,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 837 transitions. [2021-11-19 14:03:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:03:02,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:02,461 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:02,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 14:03:02,461 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:03:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1536639083, now seen corresponding path program 2 times [2021-11-19 14:03:02,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:02,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111037047] [2021-11-19 14:03:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:02,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:03:02,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:02,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111037047] [2021-11-19 14:03:02,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111037047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:02,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:02,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:03:02,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102749887] [2021-11-19 14:03:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:02,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:03:02,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:03:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:03:02,651 INFO L87 Difference]: Start difference. First operand 454 states and 837 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:03,167 INFO L93 Difference]: Finished difference Result 747 states and 1364 transitions. [2021-11-19 14:03:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:03:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:03:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:03,169 INFO L225 Difference]: With dead ends: 747 [2021-11-19 14:03:03,169 INFO L226 Difference]: Without dead ends: 747 [2021-11-19 14:03:03,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:03:03,170 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 99 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:03,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 17 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:03:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-19 14:03:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 500. [2021-11-19 14:03:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 495 states have (on average 1.8767676767676769) internal successors, (929), 499 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 929 transitions. [2021-11-19 14:03:03,184 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 929 transitions. Word has length 30 [2021-11-19 14:03:03,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:03,185 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 929 transitions. [2021-11-19 14:03:03,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 929 transitions. [2021-11-19 14:03:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:03:03,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:03,186 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:03,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 14:03:03,187 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:03:03,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:03,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1539868043, now seen corresponding path program 3 times [2021-11-19 14:03:03,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:03,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840428279] [2021-11-19 14:03:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:03,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:03:03,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:03,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840428279] [2021-11-19 14:03:03,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840428279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:03,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:03,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:03:03,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493891721] [2021-11-19 14:03:03,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:03,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:03:03,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:03:03,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:03:03,454 INFO L87 Difference]: Start difference. First operand 500 states and 929 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:04,131 INFO L93 Difference]: Finished difference Result 735 states and 1340 transitions. [2021-11-19 14:03:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:03:04,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:03:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:04,133 INFO L225 Difference]: With dead ends: 735 [2021-11-19 14:03:04,133 INFO L226 Difference]: Without dead ends: 735 [2021-11-19 14:03:04,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:03:04,134 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 99 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:04,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 17 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:03:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-19 14:03:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 509. [2021-11-19 14:03:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 504 states have (on average 1.880952380952381) internal successors, (948), 508 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 948 transitions. [2021-11-19 14:03:04,149 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 948 transitions. Word has length 30 [2021-11-19 14:03:04,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:04,150 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 948 transitions. [2021-11-19 14:03:04,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 948 transitions. [2021-11-19 14:03:04,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:03:04,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:04,152 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:04,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 14:03:04,152 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:03:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1539920123, now seen corresponding path program 4 times [2021-11-19 14:03:04,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:04,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277936716] [2021-11-19 14:03:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:04,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:03:04,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:03:04,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277936716] [2021-11-19 14:03:04,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277936716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:03:04,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:03:04,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:03:04,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784860371] [2021-11-19 14:03:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:04,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:03:04,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:03:04,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:03:04,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:03:04,511 INFO L87 Difference]: Start difference. First operand 509 states and 948 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:05,204 INFO L93 Difference]: Finished difference Result 721 states and 1312 transitions. [2021-11-19 14:03:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:03:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:03:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:05,206 INFO L225 Difference]: With dead ends: 721 [2021-11-19 14:03:05,207 INFO L226 Difference]: Without dead ends: 721 [2021-11-19 14:03:05,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:03:05,208 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 91 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:05,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 17 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:03:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-11-19 14:03:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 520. [2021-11-19 14:03:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 515 states have (on average 1.8854368932038834) internal successors, (971), 519 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 971 transitions. [2021-11-19 14:03:05,226 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 971 transitions. Word has length 30 [2021-11-19 14:03:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:05,227 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 971 transitions. [2021-11-19 14:03:05,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:03:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 971 transitions. [2021-11-19 14:03:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:03:05,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:05,229 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:05,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 14:03:05,229 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:03:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash -701096967, now seen corresponding path program 5 times [2021-11-19 14:03:05,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:03:05,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468785614] [2021-11-19 14:03:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:05,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:03:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:06:18,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:18,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468785614] [2021-11-19 14:06:18,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468785614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 14:06:18,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635411084] [2021-11-19 14:06:18,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:06:18,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:06:18,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:06:18,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:06:18,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 14:06:19,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 14:06:19,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:06:19,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:06:19,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:19,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 14:06:19,139 INFO L354 Elim1Store]: treesize reduction 7, result has 53.3 percent of original size [2021-11-19 14:06:19,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2021-11-19 14:06:19,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-19 14:06:19,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-11-19 14:06:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2021-11-19 14:06:19,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2021-11-19 14:06:19,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:06:19,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2021-11-19 14:06:19,685 INFO L354 Elim1Store]: treesize reduction 405, result has 13.1 percent of original size [2021-11-19 14:06:19,686 INFO L388 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 15 case distinctions, treesize of input 91 treesize of output 102 [2021-11-19 14:06:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:19,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:20,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:06:20,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:06:20,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:06:20,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:06:20,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:06:20,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:06:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:20,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635411084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:20,915 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:06:20,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 36 [2021-11-19 14:06:20,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263018723] [2021-11-19 14:06:20,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:20,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:06:20,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:20,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:06:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1165, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 14:06:20,917 INFO L87 Difference]: Start difference. First operand 520 states and 971 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:22,363 INFO L93 Difference]: Finished difference Result 781 states and 1415 transitions. [2021-11-19 14:06:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:22,363 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 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 30 [2021-11-19 14:06:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:22,365 INFO L225 Difference]: With dead ends: 781 [2021-11-19 14:06:22,365 INFO L226 Difference]: Without dead ends: 754 [2021-11-19 14:06:22,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=275, Invalid=1617, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 14:06:22,367 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 147 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:22,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 18 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 619 Invalid, 0 Unknown, 119 Unchecked, 1.2s Time] [2021-11-19 14:06:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-19 14:06:22,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 567. [2021-11-19 14:06:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 562 states have (on average 1.8843416370106763) internal successors, (1059), 566 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1059 transitions. [2021-11-19 14:06:22,385 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1059 transitions. Word has length 30 [2021-11-19 14:06:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:22,386 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1059 transitions. [2021-11-19 14:06:22,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1059 transitions. [2021-11-19 14:06:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:22,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:22,388 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:22,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:06:22,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f8af5b-1a20-4477-81d4-a3c32a63c95c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-19 14:06:22,602 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1203452871, now seen corresponding path program 6 times [2021-11-19 14:06:22,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:22,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401301927] [2021-11-19 14:06:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:22,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:22,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:22,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401301927] [2021-11-19 14:06:22,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401301927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:22,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:22,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:22,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956501115] [2021-11-19 14:06:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:22,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:22,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:22,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:22,769 INFO L87 Difference]: Start difference. First operand 567 states and 1059 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:23,209 INFO L93 Difference]: Finished difference Result 661 states and 1233 transitions. [2021-11-19 14:06:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:23,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:23,211 INFO L225 Difference]: With dead ends: 661 [2021-11-19 14:06:23,211 INFO L226 Difference]: Without dead ends: 661 [2021-11-19 14:06:23,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:06:23,212 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:23,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 36 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:06:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-11-19 14:06:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 569. [2021-11-19 14:06:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 564 states have (on average 1.8847517730496455) internal successors, (1063), 568 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1063 transitions. [2021-11-19 14:06:23,228 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1063 transitions. Word has length 30 [2021-11-19 14:06:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:23,228 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1063 transitions. [2021-11-19 14:06:23,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1063 transitions. [2021-11-19 14:06:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:23,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:23,230 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:23,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 14:06:23,231 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1288011261, now seen corresponding path program 7 times [2021-11-19 14:06:23,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:23,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393867976] [2021-11-19 14:06:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:23,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:23,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:23,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393867976] [2021-11-19 14:06:23,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393867976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:23,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:23,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:23,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287877365] [2021-11-19 14:06:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:23,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:23,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:23,454 INFO L87 Difference]: Start difference. First operand 569 states and 1063 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:23,869 INFO L93 Difference]: Finished difference Result 678 states and 1263 transitions. [2021-11-19 14:06:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:23,871 INFO L225 Difference]: With dead ends: 678 [2021-11-19 14:06:23,871 INFO L226 Difference]: Without dead ends: 678 [2021-11-19 14:06:23,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:23,871 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:23,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 32 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:06:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-19 14:06:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 572. [2021-11-19 14:06:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 567 states have (on average 1.8853615520282188) internal successors, (1069), 571 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1069 transitions. [2021-11-19 14:06:23,883 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1069 transitions. Word has length 30 [2021-11-19 14:06:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1069 transitions. [2021-11-19 14:06:23,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1069 transitions. [2021-11-19 14:06:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:23,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:23,885 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:23,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 14:06:23,886 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1288063341, now seen corresponding path program 8 times [2021-11-19 14:06:23,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:23,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982550189] [2021-11-19 14:06:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:23,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:24,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:24,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982550189] [2021-11-19 14:06:24,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982550189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:24,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:24,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:24,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210147435] [2021-11-19 14:06:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:24,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:24,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:24,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:24,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:24,261 INFO L87 Difference]: Start difference. First operand 572 states and 1069 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:24,878 INFO L93 Difference]: Finished difference Result 670 states and 1247 transitions. [2021-11-19 14:06:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:24,880 INFO L225 Difference]: With dead ends: 670 [2021-11-19 14:06:24,880 INFO L226 Difference]: Without dead ends: 670 [2021-11-19 14:06:24,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:24,881 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:24,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 32 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-19 14:06:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 577. [2021-11-19 14:06:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 572 states have (on average 1.8863636363636365) internal successors, (1079), 576 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1079 transitions. [2021-11-19 14:06:24,896 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1079 transitions. Word has length 30 [2021-11-19 14:06:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:24,896 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1079 transitions. [2021-11-19 14:06:24,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1079 transitions. [2021-11-19 14:06:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:24,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:24,898 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:24,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 14:06:24,898 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:24,899 INFO L85 PathProgramCache]: Analyzing trace with hash 412607575, now seen corresponding path program 9 times [2021-11-19 14:06:24,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:24,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898411572] [2021-11-19 14:06:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:24,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:25,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:25,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898411572] [2021-11-19 14:06:25,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898411572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:25,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:25,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:25,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096142934] [2021-11-19 14:06:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:25,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:25,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:25,417 INFO L87 Difference]: Start difference. First operand 577 states and 1079 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:25,940 INFO L93 Difference]: Finished difference Result 668 states and 1243 transitions. [2021-11-19 14:06:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:25,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:25,942 INFO L225 Difference]: With dead ends: 668 [2021-11-19 14:06:25,942 INFO L226 Difference]: Without dead ends: 668 [2021-11-19 14:06:25,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:25,943 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:25,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:06:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-19 14:06:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 580. [2021-11-19 14:06:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 575 states have (on average 1.8817391304347826) internal successors, (1082), 579 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1082 transitions. [2021-11-19 14:06:25,957 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1082 transitions. Word has length 30 [2021-11-19 14:06:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:25,957 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1082 transitions. [2021-11-19 14:06:25,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1082 transitions. [2021-11-19 14:06:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:25,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:25,960 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:25,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 14:06:25,960 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2055110983, now seen corresponding path program 10 times [2021-11-19 14:06:25,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:25,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697117743] [2021-11-19 14:06:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:25,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:26,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:26,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697117743] [2021-11-19 14:06:26,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697117743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:26,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:26,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:26,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381085712] [2021-11-19 14:06:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:26,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:26,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:26,216 INFO L87 Difference]: Start difference. First operand 580 states and 1082 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:26,831 INFO L93 Difference]: Finished difference Result 658 states and 1224 transitions. [2021-11-19 14:06:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:26,833 INFO L225 Difference]: With dead ends: 658 [2021-11-19 14:06:26,833 INFO L226 Difference]: Without dead ends: 658 [2021-11-19 14:06:26,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:06:26,834 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:26,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 43 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-11-19 14:06:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 582. [2021-11-19 14:06:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 577 states have (on average 1.882149046793761) internal successors, (1086), 581 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1086 transitions. [2021-11-19 14:06:26,845 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1086 transitions. Word has length 30 [2021-11-19 14:06:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:26,845 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 1086 transitions. [2021-11-19 14:06:26,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1086 transitions. [2021-11-19 14:06:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:26,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:26,847 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:26,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 14:06:26,848 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2056748713, now seen corresponding path program 11 times [2021-11-19 14:06:26,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:26,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077340370] [2021-11-19 14:06:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:26,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:27,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:27,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077340370] [2021-11-19 14:06:27,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077340370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:27,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:27,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:27,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172745268] [2021-11-19 14:06:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:27,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:27,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:27,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:27,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:27,237 INFO L87 Difference]: Start difference. First operand 582 states and 1086 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:28,065 INFO L93 Difference]: Finished difference Result 657 states and 1222 transitions. [2021-11-19 14:06:28,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:28,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:28,067 INFO L225 Difference]: With dead ends: 657 [2021-11-19 14:06:28,067 INFO L226 Difference]: Without dead ends: 657 [2021-11-19 14:06:28,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:06:28,067 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:28,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 39 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:06:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-19 14:06:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 580. [2021-11-19 14:06:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 575 states have (on average 1.8817391304347826) internal successors, (1082), 579 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1082 transitions. [2021-11-19 14:06:28,079 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1082 transitions. Word has length 30 [2021-11-19 14:06:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:28,079 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1082 transitions. [2021-11-19 14:06:28,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1082 transitions. [2021-11-19 14:06:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:28,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:28,081 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:28,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 14:06:28,081 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash -362337055, now seen corresponding path program 12 times [2021-11-19 14:06:28,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:28,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231468228] [2021-11-19 14:06:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:28,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:28,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:28,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231468228] [2021-11-19 14:06:28,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231468228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:28,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:28,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:28,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871186856] [2021-11-19 14:06:28,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:28,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:28,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:28,390 INFO L87 Difference]: Start difference. First operand 580 states and 1082 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:29,287 INFO L93 Difference]: Finished difference Result 674 states and 1252 transitions. [2021-11-19 14:06:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:06:29,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:29,289 INFO L225 Difference]: With dead ends: 674 [2021-11-19 14:06:29,289 INFO L226 Difference]: Without dead ends: 674 [2021-11-19 14:06:29,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:06:29,289 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:29,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 43 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:06:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-11-19 14:06:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 584. [2021-11-19 14:06:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 579 states have (on average 1.8825561312607946) internal successors, (1090), 583 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1090 transitions. [2021-11-19 14:06:29,300 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1090 transitions. Word has length 30 [2021-11-19 14:06:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:29,300 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1090 transitions. [2021-11-19 14:06:29,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1090 transitions. [2021-11-19 14:06:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:29,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:29,301 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:29,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 14:06:29,302 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash -363974785, now seen corresponding path program 13 times [2021-11-19 14:06:29,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:29,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808886403] [2021-11-19 14:06:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:29,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:29,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:29,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808886403] [2021-11-19 14:06:29,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808886403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:29,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:29,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:29,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614421719] [2021-11-19 14:06:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:29,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:29,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:29,656 INFO L87 Difference]: Start difference. First operand 584 states and 1090 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:30,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:30,347 INFO L93 Difference]: Finished difference Result 673 states and 1250 transitions. [2021-11-19 14:06:30,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:30,350 INFO L225 Difference]: With dead ends: 673 [2021-11-19 14:06:30,350 INFO L226 Difference]: Without dead ends: 673 [2021-11-19 14:06:30,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:06:30,351 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:30,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 36 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-19 14:06:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 580. [2021-11-19 14:06:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 575 states have (on average 1.8817391304347826) internal successors, (1082), 579 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1082 transitions. [2021-11-19 14:06:30,365 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1082 transitions. Word has length 30 [2021-11-19 14:06:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:30,366 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1082 transitions. [2021-11-19 14:06:30,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1082 transitions. [2021-11-19 14:06:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:30,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:30,368 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:30,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 14:06:30,368 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1975057339, now seen corresponding path program 3 times [2021-11-19 14:06:30,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:30,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500302936] [2021-11-19 14:06:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:30,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:30,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:30,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500302936] [2021-11-19 14:06:30,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500302936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:30,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:30,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:30,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748443004] [2021-11-19 14:06:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:30,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:30,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:30,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:30,785 INFO L87 Difference]: Start difference. First operand 580 states and 1082 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:31,342 INFO L93 Difference]: Finished difference Result 733 states and 1329 transitions. [2021-11-19 14:06:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:31,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:31,344 INFO L225 Difference]: With dead ends: 733 [2021-11-19 14:06:31,344 INFO L226 Difference]: Without dead ends: 733 [2021-11-19 14:06:31,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:31,345 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 91 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:31,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 15 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-11-19 14:06:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 572. [2021-11-19 14:06:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 567 states have (on average 1.8783068783068784) internal successors, (1065), 571 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1065 transitions. [2021-11-19 14:06:31,358 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1065 transitions. Word has length 30 [2021-11-19 14:06:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:31,358 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1065 transitions. [2021-11-19 14:06:31,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1065 transitions. [2021-11-19 14:06:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:31,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:31,360 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:31,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 14:06:31,360 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash -854944921, now seen corresponding path program 1 times [2021-11-19 14:06:31,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:31,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253591990] [2021-11-19 14:06:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:31,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:31,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:31,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253591990] [2021-11-19 14:06:31,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253591990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:31,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:31,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:31,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602556037] [2021-11-19 14:06:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:31,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:31,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:31,688 INFO L87 Difference]: Start difference. First operand 572 states and 1065 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:32,523 INFO L93 Difference]: Finished difference Result 716 states and 1296 transitions. [2021-11-19 14:06:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:06:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:32,525 INFO L225 Difference]: With dead ends: 716 [2021-11-19 14:06:32,525 INFO L226 Difference]: Without dead ends: 716 [2021-11-19 14:06:32,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:32,525 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:32,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 17 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:06:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-19 14:06:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 577. [2021-11-19 14:06:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 572 states have (on average 1.8758741258741258) internal successors, (1073), 576 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1073 transitions. [2021-11-19 14:06:32,535 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1073 transitions. Word has length 30 [2021-11-19 14:06:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:32,536 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 1073 transitions. [2021-11-19 14:06:32,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1073 transitions. [2021-11-19 14:06:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:32,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:32,537 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:32,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 14:06:32,538 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1270075063, now seen corresponding path program 2 times [2021-11-19 14:06:32,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:32,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109674724] [2021-11-19 14:06:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:32,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:32,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:32,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109674724] [2021-11-19 14:06:32,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109674724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:32,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:32,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:32,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821934790] [2021-11-19 14:06:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:32,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:32,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:32,975 INFO L87 Difference]: Start difference. First operand 577 states and 1073 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:33,590 INFO L93 Difference]: Finished difference Result 702 states and 1270 transitions. [2021-11-19 14:06:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:06:33,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:33,592 INFO L225 Difference]: With dead ends: 702 [2021-11-19 14:06:33,593 INFO L226 Difference]: Without dead ends: 702 [2021-11-19 14:06:33,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:33,593 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 81 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:33,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 18 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-19 14:06:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 582. [2021-11-19 14:06:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 577 states have (on average 1.8682842287694974) internal successors, (1078), 581 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1078 transitions. [2021-11-19 14:06:33,606 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1078 transitions. Word has length 30 [2021-11-19 14:06:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:33,607 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 1078 transitions. [2021-11-19 14:06:33,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1078 transitions. [2021-11-19 14:06:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:33,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:33,608 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:33,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 14:06:33,609 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1999008841, now seen corresponding path program 4 times [2021-11-19 14:06:33,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:33,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27062670] [2021-11-19 14:06:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:33,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:34,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:34,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27062670] [2021-11-19 14:06:34,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27062670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:34,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:34,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:34,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127251110] [2021-11-19 14:06:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:34,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:34,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:34,095 INFO L87 Difference]: Start difference. First operand 582 states and 1078 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:34,555 INFO L93 Difference]: Finished difference Result 720 states and 1300 transitions. [2021-11-19 14:06:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:34,557 INFO L225 Difference]: With dead ends: 720 [2021-11-19 14:06:34,557 INFO L226 Difference]: Without dead ends: 720 [2021-11-19 14:06:34,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:34,557 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:34,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 8 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-11-19 14:06:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 575. [2021-11-19 14:06:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 570 states have (on average 1.8666666666666667) internal successors, (1064), 574 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1064 transitions. [2021-11-19 14:06:34,569 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1064 transitions. Word has length 30 [2021-11-19 14:06:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:34,570 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 1064 transitions. [2021-11-19 14:06:34,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1064 transitions. [2021-11-19 14:06:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:34,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:34,572 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:34,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 14:06:34,572 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:34,572 INFO L85 PathProgramCache]: Analyzing trace with hash 132155681, now seen corresponding path program 14 times [2021-11-19 14:06:34,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:34,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539544079] [2021-11-19 14:06:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:34,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:34,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:34,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539544079] [2021-11-19 14:06:34,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539544079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:34,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:34,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:34,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527750842] [2021-11-19 14:06:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:34,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:34,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:34,785 INFO L87 Difference]: Start difference. First operand 575 states and 1064 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:35,522 INFO L93 Difference]: Finished difference Result 715 states and 1298 transitions. [2021-11-19 14:06:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:35,523 INFO L225 Difference]: With dead ends: 715 [2021-11-19 14:06:35,523 INFO L226 Difference]: Without dead ends: 715 [2021-11-19 14:06:35,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:35,524 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 72 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:35,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 8 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:06:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-19 14:06:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 572. [2021-11-19 14:06:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 567 states have (on average 1.8659611992945326) internal successors, (1058), 571 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1058 transitions. [2021-11-19 14:06:35,534 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1058 transitions. Word has length 30 [2021-11-19 14:06:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:35,534 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1058 transitions. [2021-11-19 14:06:35,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1058 transitions. [2021-11-19 14:06:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:35,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:35,536 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:35,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 14:06:35,536 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash 128926721, now seen corresponding path program 15 times [2021-11-19 14:06:35,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:35,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913966854] [2021-11-19 14:06:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:35,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:35,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:35,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913966854] [2021-11-19 14:06:35,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913966854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:35,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:35,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:35,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208133567] [2021-11-19 14:06:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:35,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:35,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:35,825 INFO L87 Difference]: Start difference. First operand 572 states and 1058 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:36,396 INFO L93 Difference]: Finished difference Result 701 states and 1270 transitions. [2021-11-19 14:06:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:36,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:36,398 INFO L225 Difference]: With dead ends: 701 [2021-11-19 14:06:36,398 INFO L226 Difference]: Without dead ends: 701 [2021-11-19 14:06:36,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:36,398 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:36,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 8 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-11-19 14:06:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 569. [2021-11-19 14:06:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 564 states have (on average 1.8652482269503545) internal successors, (1052), 568 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1052 transitions. [2021-11-19 14:06:36,407 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1052 transitions. Word has length 30 [2021-11-19 14:06:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:36,407 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1052 transitions. [2021-11-19 14:06:36,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1052 transitions. [2021-11-19 14:06:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:36,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:36,408 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:36,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 14:06:36,408 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash 128874641, now seen corresponding path program 16 times [2021-11-19 14:06:36,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:36,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677407700] [2021-11-19 14:06:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:36,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:36,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:36,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677407700] [2021-11-19 14:06:36,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677407700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:36,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:36,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:36,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890352365] [2021-11-19 14:06:36,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:36,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:36,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:36,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:36,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:36,764 INFO L87 Difference]: Start difference. First operand 569 states and 1052 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:37,395 INFO L93 Difference]: Finished difference Result 684 states and 1237 transitions. [2021-11-19 14:06:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:37,397 INFO L225 Difference]: With dead ends: 684 [2021-11-19 14:06:37,397 INFO L226 Difference]: Without dead ends: 684 [2021-11-19 14:06:37,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:37,398 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 71 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:37,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 8 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:06:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-19 14:06:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 563. [2021-11-19 14:06:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 558 states have (on average 1.863799283154122) internal successors, (1040), 562 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1040 transitions. [2021-11-19 14:06:37,411 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1040 transitions. Word has length 30 [2021-11-19 14:06:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:37,411 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 1040 transitions. [2021-11-19 14:06:37,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1040 transitions. [2021-11-19 14:06:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:37,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:37,412 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:37,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 14:06:37,413 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:37,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1745694373, now seen corresponding path program 17 times [2021-11-19 14:06:37,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:37,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053473783] [2021-11-19 14:06:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:37,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:37,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:37,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053473783] [2021-11-19 14:06:37,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053473783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:37,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:37,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:37,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513308734] [2021-11-19 14:06:37,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:37,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:37,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:37,901 INFO L87 Difference]: Start difference. First operand 563 states and 1040 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:38,381 INFO L93 Difference]: Finished difference Result 679 states and 1228 transitions. [2021-11-19 14:06:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:38,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:38,383 INFO L225 Difference]: With dead ends: 679 [2021-11-19 14:06:38,383 INFO L226 Difference]: Without dead ends: 679 [2021-11-19 14:06:38,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:38,384 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:38,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 8 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-19 14:06:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 555. [2021-11-19 14:06:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 550 states have (on average 1.8672727272727272) internal successors, (1027), 554 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1027 transitions. [2021-11-19 14:06:38,396 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1027 transitions. Word has length 30 [2021-11-19 14:06:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:38,396 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1027 transitions. [2021-11-19 14:06:38,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1027 transitions. [2021-11-19 14:06:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:38,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:38,398 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:38,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 14:06:38,398 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash 377869909, now seen corresponding path program 3 times [2021-11-19 14:06:38,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:38,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234295708] [2021-11-19 14:06:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:38,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:38,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:38,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234295708] [2021-11-19 14:06:38,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234295708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:38,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:38,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:38,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268215595] [2021-11-19 14:06:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:38,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:38,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:38,768 INFO L87 Difference]: Start difference. First operand 555 states and 1027 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:39,399 INFO L93 Difference]: Finished difference Result 710 states and 1283 transitions. [2021-11-19 14:06:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:39,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:39,401 INFO L225 Difference]: With dead ends: 710 [2021-11-19 14:06:39,401 INFO L226 Difference]: Without dead ends: 710 [2021-11-19 14:06:39,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:39,402 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:39,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 8 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:06:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-19 14:06:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 551. [2021-11-19 14:06:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 546 states have (on average 1.8663003663003663) internal successors, (1019), 550 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1019 transitions. [2021-11-19 14:06:39,413 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1019 transitions. Word has length 30 [2021-11-19 14:06:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:39,414 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 1019 transitions. [2021-11-19 14:06:39,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1019 transitions. [2021-11-19 14:06:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:39,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:39,415 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:39,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 14:06:39,416 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1346163509, now seen corresponding path program 4 times [2021-11-19 14:06:39,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:39,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193863966] [2021-11-19 14:06:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:39,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:39,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:39,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193863966] [2021-11-19 14:06:39,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193863966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:39,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:39,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:39,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791663598] [2021-11-19 14:06:39,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:39,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:39,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:39,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:39,815 INFO L87 Difference]: Start difference. First operand 551 states and 1019 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:40,210 INFO L93 Difference]: Finished difference Result 698 states and 1260 transitions. [2021-11-19 14:06:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:40,212 INFO L225 Difference]: With dead ends: 698 [2021-11-19 14:06:40,212 INFO L226 Difference]: Without dead ends: 698 [2021-11-19 14:06:40,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:40,213 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:40,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 8 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-19 14:06:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 547. [2021-11-19 14:06:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 542 states have (on average 1.8726937269372694) internal successors, (1015), 546 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1015 transitions. [2021-11-19 14:06:40,221 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1015 transitions. Word has length 30 [2021-11-19 14:06:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:40,221 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1015 transitions. [2021-11-19 14:06:40,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1015 transitions. [2021-11-19 14:06:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:40,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:40,223 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:40,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 14:06:40,223 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -887315989, now seen corresponding path program 5 times [2021-11-19 14:06:40,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:40,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873124519] [2021-11-19 14:06:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:40,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:40,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:40,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873124519] [2021-11-19 14:06:40,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873124519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:40,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:40,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:40,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408936461] [2021-11-19 14:06:40,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:40,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:40,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:40,771 INFO L87 Difference]: Start difference. First operand 547 states and 1015 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:41,416 INFO L93 Difference]: Finished difference Result 564 states and 1040 transitions. [2021-11-19 14:06:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:41,418 INFO L225 Difference]: With dead ends: 564 [2021-11-19 14:06:41,418 INFO L226 Difference]: Without dead ends: 564 [2021-11-19 14:06:41,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:41,419 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:41,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 8 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:06:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-19 14:06:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 547. [2021-11-19 14:06:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 542 states have (on average 1.8726937269372694) internal successors, (1015), 546 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1015 transitions. [2021-11-19 14:06:41,431 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1015 transitions. Word has length 30 [2021-11-19 14:06:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:41,431 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1015 transitions. [2021-11-19 14:06:41,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1015 transitions. [2021-11-19 14:06:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:41,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:41,433 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:41,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 14:06:41,433 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:41,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1662196617, now seen corresponding path program 6 times [2021-11-19 14:06:41,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:41,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407140000] [2021-11-19 14:06:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:41,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:42,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407140000] [2021-11-19 14:06:42,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407140000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:42,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:42,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:42,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475140386] [2021-11-19 14:06:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:42,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:42,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:42,053 INFO L87 Difference]: Start difference. First operand 547 states and 1015 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:42,587 INFO L93 Difference]: Finished difference Result 555 states and 1026 transitions. [2021-11-19 14:06:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:42,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:42,589 INFO L225 Difference]: With dead ends: 555 [2021-11-19 14:06:42,589 INFO L226 Difference]: Without dead ends: 555 [2021-11-19 14:06:42,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:42,590 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:42,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 8 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-19 14:06:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 547. [2021-11-19 14:06:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 542 states have (on average 1.8726937269372694) internal successors, (1015), 546 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1015 transitions. [2021-11-19 14:06:42,601 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1015 transitions. Word has length 30 [2021-11-19 14:06:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:42,601 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1015 transitions. [2021-11-19 14:06:42,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1015 transitions. [2021-11-19 14:06:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:42,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:42,603 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:42,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 14:06:42,603 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1753920917, now seen corresponding path program 7 times [2021-11-19 14:06:42,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:42,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208251361] [2021-11-19 14:06:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:42,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:43,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:43,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208251361] [2021-11-19 14:06:43,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208251361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:43,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:43,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:43,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97078751] [2021-11-19 14:06:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:43,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:43,070 INFO L87 Difference]: Start difference. First operand 547 states and 1015 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:43,489 INFO L93 Difference]: Finished difference Result 571 states and 1054 transitions. [2021-11-19 14:06:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:43,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:43,490 INFO L225 Difference]: With dead ends: 571 [2021-11-19 14:06:43,491 INFO L226 Difference]: Without dead ends: 571 [2021-11-19 14:06:43,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:43,491 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:43,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-19 14:06:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 547. [2021-11-19 14:06:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 542 states have (on average 1.8726937269372694) internal successors, (1015), 546 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1015 transitions. [2021-11-19 14:06:43,499 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1015 transitions. Word has length 30 [2021-11-19 14:06:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:43,500 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1015 transitions. [2021-11-19 14:06:43,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1015 transitions. [2021-11-19 14:06:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 14:06:43,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:43,501 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:43,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 14:06:43,501 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1993563255, now seen corresponding path program 8 times [2021-11-19 14:06:43,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:43,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866431756] [2021-11-19 14:06:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:43,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:43,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:43,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866431756] [2021-11-19 14:06:43,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866431756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:43,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:43,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:43,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256319444] [2021-11-19 14:06:43,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:43,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:43,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:43,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:43,932 INFO L87 Difference]: Start difference. First operand 547 states and 1015 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:44,353 INFO L93 Difference]: Finished difference Result 562 states and 1040 transitions. [2021-11-19 14:06:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:44,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-19 14:06:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:44,354 INFO L225 Difference]: With dead ends: 562 [2021-11-19 14:06:44,354 INFO L226 Difference]: Without dead ends: 562 [2021-11-19 14:06:44,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:44,355 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:44,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:44,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-19 14:06:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 530. [2021-11-19 14:06:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 525 states have (on average 1.8761904761904762) internal successors, (985), 529 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 985 transitions. [2021-11-19 14:06:44,365 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 985 transitions. Word has length 30 [2021-11-19 14:06:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:44,365 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 985 transitions. [2021-11-19 14:06:44,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 985 transitions. [2021-11-19 14:06:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:44,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:44,367 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:44,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 14:06:44,367 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:44,368 INFO L85 PathProgramCache]: Analyzing trace with hash -984171446, now seen corresponding path program 1 times [2021-11-19 14:06:44,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:44,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879153724] [2021-11-19 14:06:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:44,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:44,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:44,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879153724] [2021-11-19 14:06:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879153724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:44,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734014365] [2021-11-19 14:06:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:44,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:44,814 INFO L87 Difference]: Start difference. First operand 530 states and 985 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:45,381 INFO L93 Difference]: Finished difference Result 690 states and 1246 transitions. [2021-11-19 14:06:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:45,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:45,383 INFO L225 Difference]: With dead ends: 690 [2021-11-19 14:06:45,383 INFO L226 Difference]: Without dead ends: 690 [2021-11-19 14:06:45,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:45,383 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 91 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:45,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 15 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-19 14:06:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 538. [2021-11-19 14:06:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 533 states have (on average 1.876172607879925) internal successors, (1000), 537 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1000 transitions. [2021-11-19 14:06:45,391 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1000 transitions. Word has length 31 [2021-11-19 14:06:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:45,391 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1000 transitions. [2021-11-19 14:06:45,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1000 transitions. [2021-11-19 14:06:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:45,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:45,392 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:45,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 14:06:45,392 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1433202341, now seen corresponding path program 1 times [2021-11-19 14:06:45,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:45,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499899642] [2021-11-19 14:06:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:45,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:45,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:45,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499899642] [2021-11-19 14:06:45,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499899642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:45,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:45,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:45,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395650461] [2021-11-19 14:06:45,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:45,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:45,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:45,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:45,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:45,603 INFO L87 Difference]: Start difference. First operand 538 states and 1000 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:46,150 INFO L93 Difference]: Finished difference Result 641 states and 1190 transitions. [2021-11-19 14:06:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:46,153 INFO L225 Difference]: With dead ends: 641 [2021-11-19 14:06:46,153 INFO L226 Difference]: Without dead ends: 641 [2021-11-19 14:06:46,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:06:46,154 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:46,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 39 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:06:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-19 14:06:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 543. [2021-11-19 14:06:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 538 states have (on average 1.8773234200743494) internal successors, (1010), 542 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1010 transitions. [2021-11-19 14:06:46,165 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1010 transitions. Word has length 31 [2021-11-19 14:06:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:46,165 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 1010 transitions. [2021-11-19 14:06:46,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1010 transitions. [2021-11-19 14:06:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:46,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:46,167 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:46,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 14:06:46,167 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1347668381, now seen corresponding path program 2 times [2021-11-19 14:06:46,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:46,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893523769] [2021-11-19 14:06:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:46,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:46,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:46,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893523769] [2021-11-19 14:06:46,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893523769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:46,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:46,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:46,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411091556] [2021-11-19 14:06:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:46,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:46,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:46,549 INFO L87 Difference]: Start difference. First operand 543 states and 1010 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:47,176 INFO L93 Difference]: Finished difference Result 660 states and 1223 transitions. [2021-11-19 14:06:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:47,179 INFO L225 Difference]: With dead ends: 660 [2021-11-19 14:06:47,179 INFO L226 Difference]: Without dead ends: 660 [2021-11-19 14:06:47,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:47,180 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:47,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 32 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-19 14:06:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 547. [2021-11-19 14:06:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 542 states have (on average 1.878228782287823) internal successors, (1018), 546 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1018 transitions. [2021-11-19 14:06:47,193 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1018 transitions. Word has length 31 [2021-11-19 14:06:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:47,193 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 1018 transitions. [2021-11-19 14:06:47,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1018 transitions. [2021-11-19 14:06:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:47,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:47,197 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:47,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 14:06:47,198 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1275256189, now seen corresponding path program 3 times [2021-11-19 14:06:47,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:47,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986728698] [2021-11-19 14:06:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:47,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:47,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:47,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986728698] [2021-11-19 14:06:47,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986728698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:47,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:47,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:06:47,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447498117] [2021-11-19 14:06:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:47,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:06:47,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:06:47,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:47,725 INFO L87 Difference]: Start difference. First operand 547 states and 1018 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:48,572 INFO L93 Difference]: Finished difference Result 649 states and 1201 transitions. [2021-11-19 14:06:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:48,573 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:48,575 INFO L225 Difference]: With dead ends: 649 [2021-11-19 14:06:48,576 INFO L226 Difference]: Without dead ends: 649 [2021-11-19 14:06:48,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:06:48,576 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 77 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:48,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 82 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:06:48,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-11-19 14:06:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 550. [2021-11-19 14:06:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 545 states have (on average 1.8788990825688074) internal successors, (1024), 549 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1024 transitions. [2021-11-19 14:06:48,588 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1024 transitions. Word has length 31 [2021-11-19 14:06:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:48,588 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 1024 transitions. [2021-11-19 14:06:48,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1024 transitions. [2021-11-19 14:06:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:48,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:48,590 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:48,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 14:06:48,591 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash -94065345, now seen corresponding path program 4 times [2021-11-19 14:06:48,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:48,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917990930] [2021-11-19 14:06:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:48,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:49,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:49,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917990930] [2021-11-19 14:06:49,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917990930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:49,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:49,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:06:49,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692945979] [2021-11-19 14:06:49,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:49,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:06:49,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:49,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:06:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:49,191 INFO L87 Difference]: Start difference. First operand 550 states and 1024 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:49,877 INFO L93 Difference]: Finished difference Result 643 states and 1189 transitions. [2021-11-19 14:06:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:49,879 INFO L225 Difference]: With dead ends: 643 [2021-11-19 14:06:49,879 INFO L226 Difference]: Without dead ends: 643 [2021-11-19 14:06:49,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:06:49,879 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:49,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:06:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-19 14:06:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 554. [2021-11-19 14:06:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 549 states have (on average 1.872495446265938) internal successors, (1028), 553 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1028 transitions. [2021-11-19 14:06:49,888 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1028 transitions. Word has length 31 [2021-11-19 14:06:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:49,888 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1028 transitions. [2021-11-19 14:06:49,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1028 transitions. [2021-11-19 14:06:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:49,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:49,890 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:49,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 14:06:49,891 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash 716123695, now seen corresponding path program 5 times [2021-11-19 14:06:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:49,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082626985] [2021-11-19 14:06:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:49,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:50,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:50,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082626985] [2021-11-19 14:06:50,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082626985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:50,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:50,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:06:50,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598103839] [2021-11-19 14:06:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:50,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:06:50,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:06:50,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:50,365 INFO L87 Difference]: Start difference. First operand 554 states and 1028 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:51,350 INFO L93 Difference]: Finished difference Result 642 states and 1187 transitions. [2021-11-19 14:06:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:06:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:51,351 INFO L225 Difference]: With dead ends: 642 [2021-11-19 14:06:51,351 INFO L226 Difference]: Without dead ends: 642 [2021-11-19 14:06:51,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:06:51,352 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:51,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 70 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:06:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-19 14:06:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 556. [2021-11-19 14:06:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 551 states have (on average 1.8729582577132486) internal successors, (1032), 555 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1032 transitions. [2021-11-19 14:06:51,360 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1032 transitions. Word has length 31 [2021-11-19 14:06:51,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:51,360 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1032 transitions. [2021-11-19 14:06:51,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1032 transitions. [2021-11-19 14:06:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:51,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:51,361 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:51,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 14:06:51,362 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 665301055, now seen corresponding path program 6 times [2021-11-19 14:06:51,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:51,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792439180] [2021-11-19 14:06:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:51,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:51,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:51,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792439180] [2021-11-19 14:06:51,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792439180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:51,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:51,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:51,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142683541] [2021-11-19 14:06:51,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:51,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:51,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:51,731 INFO L87 Difference]: Start difference. First operand 556 states and 1032 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:52,572 INFO L93 Difference]: Finished difference Result 641 states and 1185 transitions. [2021-11-19 14:06:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:06:52,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:52,573 INFO L225 Difference]: With dead ends: 641 [2021-11-19 14:06:52,574 INFO L226 Difference]: Without dead ends: 641 [2021-11-19 14:06:52,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:06:52,574 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 39 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:52,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 43 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:06:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-11-19 14:06:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 554. [2021-11-19 14:06:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 549 states have (on average 1.872495446265938) internal successors, (1028), 553 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1028 transitions. [2021-11-19 14:06:52,584 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1028 transitions. Word has length 31 [2021-11-19 14:06:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:52,585 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1028 transitions. [2021-11-19 14:06:52,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1028 transitions. [2021-11-19 14:06:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:52,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:52,587 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:52,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 14:06:52,587 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1652507911, now seen corresponding path program 7 times [2021-11-19 14:06:52,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:52,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479795122] [2021-11-19 14:06:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:52,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:53,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:53,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479795122] [2021-11-19 14:06:53,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479795122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:53,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:53,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 14:06:53,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054548369] [2021-11-19 14:06:53,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:53,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:06:53,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:06:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:06:53,133 INFO L87 Difference]: Start difference. First operand 554 states and 1028 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:54,361 INFO L93 Difference]: Finished difference Result 619 states and 1141 transitions. [2021-11-19 14:06:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:06:54,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:54,363 INFO L225 Difference]: With dead ends: 619 [2021-11-19 14:06:54,363 INFO L226 Difference]: Without dead ends: 619 [2021-11-19 14:06:54,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:06:54,363 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:54,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 81 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:06:54,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-19 14:06:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 553. [2021-11-19 14:06:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 548 states have (on average 1.8722627737226278) internal successors, (1026), 552 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1026 transitions. [2021-11-19 14:06:54,375 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1026 transitions. Word has length 31 [2021-11-19 14:06:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:54,375 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 1026 transitions. [2021-11-19 14:06:54,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1026 transitions. [2021-11-19 14:06:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:54,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:54,376 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:54,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 14:06:54,377 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1601685271, now seen corresponding path program 8 times [2021-11-19 14:06:54,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:54,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489130404] [2021-11-19 14:06:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:54,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:54,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:54,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489130404] [2021-11-19 14:06:54,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489130404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:54,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:54,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:54,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295694939] [2021-11-19 14:06:54,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:54,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:54,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:54,915 INFO L87 Difference]: Start difference. First operand 553 states and 1026 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:55,625 INFO L93 Difference]: Finished difference Result 654 states and 1206 transitions. [2021-11-19 14:06:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:06:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:55,627 INFO L225 Difference]: With dead ends: 654 [2021-11-19 14:06:55,627 INFO L226 Difference]: Without dead ends: 654 [2021-11-19 14:06:55,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:06:55,627 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:55,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-19 14:06:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 549. [2021-11-19 14:06:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 544 states have (on average 1.8713235294117647) internal successors, (1018), 548 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1018 transitions. [2021-11-19 14:06:55,636 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1018 transitions. Word has length 31 [2021-11-19 14:06:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:55,636 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 1018 transitions. [2021-11-19 14:06:55,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1018 transitions. [2021-11-19 14:06:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:55,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:55,637 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:55,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 14:06:55,638 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash -885070118, now seen corresponding path program 1 times [2021-11-19 14:06:55,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:55,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193008612] [2021-11-19 14:06:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:55,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:55,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:55,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193008612] [2021-11-19 14:06:55,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193008612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:55,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:55,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 14:06:55,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219766952] [2021-11-19 14:06:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:55,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:06:55,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:55,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:06:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:55,851 INFO L87 Difference]: Start difference. First operand 549 states and 1018 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:56,400 INFO L93 Difference]: Finished difference Result 636 states and 1179 transitions. [2021-11-19 14:06:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:06:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:56,401 INFO L225 Difference]: With dead ends: 636 [2021-11-19 14:06:56,401 INFO L226 Difference]: Without dead ends: 636 [2021-11-19 14:06:56,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:56,402 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:56,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 8 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-19 14:06:56,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 561. [2021-11-19 14:06:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 556 states have (on average 1.8741007194244603) internal successors, (1042), 560 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1042 transitions. [2021-11-19 14:06:56,412 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1042 transitions. Word has length 31 [2021-11-19 14:06:56,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:56,412 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 1042 transitions. [2021-11-19 14:06:56,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1042 transitions. [2021-11-19 14:06:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:56,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:56,413 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:56,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 14:06:56,414 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:56,414 INFO L85 PathProgramCache]: Analyzing trace with hash -884147558, now seen corresponding path program 2 times [2021-11-19 14:06:56,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:56,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359570117] [2021-11-19 14:06:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:56,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:56,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:56,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359570117] [2021-11-19 14:06:56,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359570117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:56,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:56,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:56,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754700394] [2021-11-19 14:06:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:56,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:56,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:56,614 INFO L87 Difference]: Start difference. First operand 561 states and 1042 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:57,237 INFO L93 Difference]: Finished difference Result 724 states and 1305 transitions. [2021-11-19 14:06:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:06:57,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:57,238 INFO L225 Difference]: With dead ends: 724 [2021-11-19 14:06:57,238 INFO L226 Difference]: Without dead ends: 724 [2021-11-19 14:06:57,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:57,239 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 85 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:57,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 17 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:57,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-19 14:06:57,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 569. [2021-11-19 14:06:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 564 states have (on average 1.875886524822695) internal successors, (1058), 568 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1058 transitions. [2021-11-19 14:06:57,248 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1058 transitions. Word has length 31 [2021-11-19 14:06:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:57,248 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1058 transitions. [2021-11-19 14:06:57,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1058 transitions. [2021-11-19 14:06:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:57,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:57,249 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:57,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 14:06:57,249 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash -884116868, now seen corresponding path program 3 times [2021-11-19 14:06:57,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:57,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53271641] [2021-11-19 14:06:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:57,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:57,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:57,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53271641] [2021-11-19 14:06:57,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53271641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:57,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:57,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:57,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614059502] [2021-11-19 14:06:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:57,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:57,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:57,544 INFO L87 Difference]: Start difference. First operand 569 states and 1058 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:58,218 INFO L93 Difference]: Finished difference Result 702 states and 1263 transitions. [2021-11-19 14:06:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:06:58,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:58,220 INFO L225 Difference]: With dead ends: 702 [2021-11-19 14:06:58,220 INFO L226 Difference]: Without dead ends: 702 [2021-11-19 14:06:58,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:58,222 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 83 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:58,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 17 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-19 14:06:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 570. [2021-11-19 14:06:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 565 states have (on average 1.8725663716814158) internal successors, (1058), 569 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1058 transitions. [2021-11-19 14:06:58,234 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1058 transitions. Word has length 31 [2021-11-19 14:06:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:58,234 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1058 transitions. [2021-11-19 14:06:58,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1058 transitions. [2021-11-19 14:06:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:58,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:58,236 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:58,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 14:06:58,236 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:58,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash -733489570, now seen corresponding path program 4 times [2021-11-19 14:06:58,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:58,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144220436] [2021-11-19 14:06:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:58,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:06:58,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:06:58,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144220436] [2021-11-19 14:06:58,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144220436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:06:58,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:06:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 14:06:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261610694] [2021-11-19 14:06:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:58,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:06:58,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:06:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:06:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:06:58,730 INFO L87 Difference]: Start difference. First operand 570 states and 1058 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:59,378 INFO L93 Difference]: Finished difference Result 682 states and 1225 transitions. [2021-11-19 14:06:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:06:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-19 14:06:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:59,380 INFO L225 Difference]: With dead ends: 682 [2021-11-19 14:06:59,380 INFO L226 Difference]: Without dead ends: 682 [2021-11-19 14:06:59,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:06:59,380 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:59,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 17 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:06:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-19 14:06:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 568. [2021-11-19 14:06:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 563 states have (on average 1.8685612788632326) internal successors, (1052), 567 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1052 transitions. [2021-11-19 14:06:59,389 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1052 transitions. Word has length 31 [2021-11-19 14:06:59,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:59,390 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1052 transitions. [2021-11-19 14:06:59,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:06:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1052 transitions. [2021-11-19 14:06:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 14:06:59,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:59,391 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:59,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 14:06:59,391 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-19 14:06:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -717622084, now seen corresponding path program 5 times [2021-11-19 14:06:59,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:06:59,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038212259] [2021-11-19 14:06:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:59,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:06:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat