./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:45:53,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:45:53,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:45:53,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:45:53,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:45:53,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:45:53,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:45:53,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:45:53,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:45:53,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:45:53,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:45:53,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:45:53,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:45:53,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:45:53,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:45:53,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:45:53,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:45:53,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:45:53,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:45:53,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:45:53,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:45:53,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:45:53,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:45:53,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:45:53,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:45:53,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:45:53,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:45:53,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:45:53,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:45:53,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:45:53,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:45:53,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:45:53,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:45:53,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:45:53,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:45:53,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:45:53,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:45:53,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:45:53,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:45:53,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:45:53,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:45:53,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 13:45:53,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:45:53,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:45:53,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:45:53,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:45:53,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:45:53,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:45:53,159 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:45:53,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:45:53,159 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:45:53,160 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:45:53,160 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:45:53,161 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:45:53,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:45:53,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:45:53,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:45:53,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:45:53,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:45:53,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:45:53,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:45:53,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:45:53,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:45:53,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:45:53,163 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:45:53,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:45:53,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:45:53,164 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:45:53,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:45:53,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:45:53,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:45:53,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2022-12-14 13:45:53,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:45:53,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:45:53,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:45:53,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:45:53,340 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:45:53,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-12-14 13:45:55,907 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:45:56,060 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:45:56,060 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2022-12-14 13:45:56,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/data/b0a7b7407/2f9e51fbb423448a9600993cbe1d9133/FLAG4af4a4e11 [2022-12-14 13:45:56,463 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/data/b0a7b7407/2f9e51fbb423448a9600993cbe1d9133 [2022-12-14 13:45:56,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:45:56,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:45:56,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:45:56,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:45:56,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:45:56,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145114bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56, skipping insertion in model container [2022-12-14 13:45:56,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:45:56,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:45:56,622 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-12-14 13:45:56,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:45:56,633 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:45:56,656 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-12-14 13:45:56,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:45:56,669 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:45:56,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56 WrapperNode [2022-12-14 13:45:56,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:45:56,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:45:56,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:45:56,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:45:56,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,711 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 504 [2022-12-14 13:45:56,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:45:56,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:45:56,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:45:56,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:45:56,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:45:56,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:45:56,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:45:56,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:45:56,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (1/1) ... [2022-12-14 13:45:56,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:45:56,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:45:56,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:45:56,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8510f0a-7178-475f-8345-e25e3df15a68/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:45:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 13:45:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 13:45:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 13:45:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 13:45:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:45:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:45:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:45:56,809 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 13:45:56,901 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:45:56,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:45:57,488 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:45:57,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:45:57,496 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 13:45:57,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:45:57 BoogieIcfgContainer [2022-12-14 13:45:57,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:45:57,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:45:57,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:45:57,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:45:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:45:56" (1/3) ... [2022-12-14 13:45:57,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f82151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:45:57, skipping insertion in model container [2022-12-14 13:45:57,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:45:56" (2/3) ... [2022-12-14 13:45:57,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f82151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:45:57, skipping insertion in model container [2022-12-14 13:45:57,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:45:57" (3/3) ... [2022-12-14 13:45:57,504 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-12-14 13:45:57,511 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 13:45:57,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:45:57,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-12-14 13:45:57,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 13:45:57,604 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 13:45:57,633 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 13:45:57,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 618 places, 641 transitions, 1306 flow [2022-12-14 13:45:57,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 618 places, 641 transitions, 1306 flow [2022-12-14 13:45:57,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 618 places, 641 transitions, 1306 flow [2022-12-14 13:45:57,834 INFO L130 PetriNetUnfolder]: 33/638 cut-off events. [2022-12-14 13:45:57,835 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-14 13:45:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 638 events. 33/638 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1534 event pairs, 0 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 460. Up to 3 conditions per place. [2022-12-14 13:45:57,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 94392 [2022-12-14 13:46:19,016 INFO L134 LiptonReduction]: Checked pairs total: 928908 [2022-12-14 13:46:19,016 INFO L136 LiptonReduction]: Total number of compositions: 824 [2022-12-14 13:46:19,023 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 190 places, 195 transitions, 414 flow [2022-12-14 13:46:30,513 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 640267 states, 633263 states have (on average 4.076686937338831) internal successors, (2581615), 640266 states have internal predecessors, (2581615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:46:30,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:46:30,535 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a6c50b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:46:30,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2022-12-14 13:46:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 640267 states, 633263 states have (on average 4.076686937338831) internal successors, (2581615), 640266 states have internal predecessors, (2581615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:46:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 13:46:31,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:46:31,311 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 13:46:31,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-12-14 13:46:31,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:46:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2465, now seen corresponding path program 1 times [2022-12-14 13:46:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:46:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288184373] [2022-12-14 13:46:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:46:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:46:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:46:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:46:31,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:46:31,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288184373] [2022-12-14 13:46:31,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288184373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:46:31,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:46:31,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 13:46:31,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803090113] [2022-12-14 13:46:31,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:46:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 13:46:31,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:46:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 13:46:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:46:32,276 INFO L87 Difference]: Start difference. First operand has 640267 states, 633263 states have (on average 4.076686937338831) internal successors, (2581615), 640266 states have internal predecessors, (2581615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:46:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:46:36,286 INFO L93 Difference]: Finished difference Result 301262 states and 1203971 transitions. [2022-12-14 13:46:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 13:46:36,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-12-14 13:46:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:46:38,370 INFO L225 Difference]: With dead ends: 301262 [2022-12-14 13:46:38,370 INFO L226 Difference]: Without dead ends: 301257 [2022-12-14 13:46:38,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 13:46:38,373 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:46:38,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:46:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301257 states. [2022-12-14 13:46:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301257 to 301257. [2022-12-14 13:46:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301257 states, 300978 states have (on average 4.000159480094891) internal successors, (1203960), 301256 states have internal predecessors, (1203960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:46:48,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301257 states to 301257 states and 1203960 transitions. [2022-12-14 13:46:48,211 INFO L78 Accepts]: Start accepts. Automaton has 301257 states and 1203960 transitions. Word has length 1 [2022-12-14 13:46:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:46:48,211 INFO L495 AbstractCegarLoop]: Abstraction has 301257 states and 1203960 transitions. [2022-12-14 13:46:48,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:46:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 301257 states and 1203960 transitions. [2022-12-14 13:46:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 13:46:48,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:46:48,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:46:48,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:46:48,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-12-14 13:46:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:46:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 681403410, now seen corresponding path program 1 times [2022-12-14 13:46:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:46:48,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598026602] [2022-12-14 13:46:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:46:48,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:46:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:46:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:46:48,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:46:48,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598026602] [2022-12-14 13:46:48,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598026602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:46:48,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:46:48,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:46:48,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178775925] [2022-12-14 13:46:48,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:46:48,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:46:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:46:48,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:46:48,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:46:48,744 INFO L87 Difference]: Start difference. First operand 301257 states and 1203960 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:46:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:46:51,883 INFO L93 Difference]: Finished difference Result 259785 states and 1030872 transitions. [2022-12-14 13:46:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:46:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-12-14 13:46:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:46:53,218 INFO L225 Difference]: With dead ends: 259785 [2022-12-14 13:46:53,218 INFO L226 Difference]: Without dead ends: 259785 [2022-12-14 13:46:53,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:46:53,219 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 155 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 13:46:53,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 74 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 13:46:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259785 states. [2022-12-14 13:46:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259785 to 259785. [2022-12-14 13:46:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259785 states, 259631 states have (on average 3.970527402351799) internal successors, (1030872), 259784 states have internal predecessors, (1030872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259785 states to 259785 states and 1030872 transitions. [2022-12-14 13:47:01,429 INFO L78 Accepts]: Start accepts. Automaton has 259785 states and 1030872 transitions. Word has length 13 [2022-12-14 13:47:01,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:01,430 INFO L495 AbstractCegarLoop]: Abstraction has 259785 states and 1030872 transitions. [2022-12-14 13:47:01,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 259785 states and 1030872 transitions. [2022-12-14 13:47:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 13:47:01,434 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:01,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:01,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:47:01,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-12-14 13:47:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:01,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1006056940, now seen corresponding path program 1 times [2022-12-14 13:47:01,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:01,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404280160] [2022-12-14 13:47:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:01,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:01,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:01,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404280160] [2022-12-14 13:47:01,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404280160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:01,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:01,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:47:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799473701] [2022-12-14 13:47:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:47:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:47:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:01,472 INFO L87 Difference]: Start difference. First operand 259785 states and 1030872 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:04,081 INFO L93 Difference]: Finished difference Result 266771 states and 1058408 transitions. [2022-12-14 13:47:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:47:04,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 13:47:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:05,947 INFO L225 Difference]: With dead ends: 266771 [2022-12-14 13:47:05,947 INFO L226 Difference]: Without dead ends: 266771 [2022-12-14 13:47:05,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:05,948 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 81 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:05,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 152 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:47:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266771 states. [2022-12-14 13:47:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266771 to 266771. [2022-12-14 13:47:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266771 states, 266617 states have (on average 3.969769369545078) internal successors, (1058408), 266770 states have internal predecessors, (1058408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266771 states to 266771 states and 1058408 transitions. [2022-12-14 13:47:14,365 INFO L78 Accepts]: Start accepts. Automaton has 266771 states and 1058408 transitions. Word has length 16 [2022-12-14 13:47:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:14,366 INFO L495 AbstractCegarLoop]: Abstraction has 266771 states and 1058408 transitions. [2022-12-14 13:47:14,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 266771 states and 1058408 transitions. [2022-12-14 13:47:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:47:14,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:14,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:14,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:47:14,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-12-14 13:47:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1767249466, now seen corresponding path program 1 times [2022-12-14 13:47:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:14,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550341842] [2022-12-14 13:47:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:14,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:14,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550341842] [2022-12-14 13:47:14,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550341842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:14,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:14,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:47:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519353752] [2022-12-14 13:47:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:14,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:47:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:47:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:47:14,475 INFO L87 Difference]: Start difference. First operand 266771 states and 1058408 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:17,121 INFO L93 Difference]: Finished difference Result 323961 states and 1269777 transitions. [2022-12-14 13:47:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:47:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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 17 [2022-12-14 13:47:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:19,064 INFO L225 Difference]: With dead ends: 323961 [2022-12-14 13:47:19,064 INFO L226 Difference]: Without dead ends: 323961 [2022-12-14 13:47:19,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:47:19,065 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 180 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:19,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 288 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:47:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323961 states. [2022-12-14 13:47:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323961 to 301705. [2022-12-14 13:47:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301705 states, 301551 states have (on average 3.966476649057705) internal successors, (1196095), 301704 states have internal predecessors, (1196095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301705 states to 301705 states and 1196095 transitions. [2022-12-14 13:47:28,312 INFO L78 Accepts]: Start accepts. Automaton has 301705 states and 1196095 transitions. Word has length 17 [2022-12-14 13:47:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:28,312 INFO L495 AbstractCegarLoop]: Abstraction has 301705 states and 1196095 transitions. [2022-12-14 13:47:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 301705 states and 1196095 transitions. [2022-12-14 13:47:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 13:47:28,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:28,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:47:28,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 101 more)] === [2022-12-14 13:47:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash -708474568, now seen corresponding path program 1 times [2022-12-14 13:47:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:28,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367900299] [2022-12-14 13:47:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 13:47:28,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:28,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367900299] [2022-12-14 13:47:28,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367900299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:28,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:28,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:47:28,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649133635] [2022-12-14 13:47:28,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:28,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:47:28,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:28,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:47:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:47:28,409 INFO L87 Difference]: Start difference. First operand 301705 states and 1196095 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:47:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:32,938 INFO L93 Difference]: Finished difference Result 513891 states and 2018311 transitions. [2022-12-14 13:47:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:47:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-12-14 13:47:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:35,956 INFO L225 Difference]: With dead ends: 513891 [2022-12-14 13:47:35,956 INFO L226 Difference]: Without dead ends: 513891 [2022-12-14 13:47:35,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:47:35,957 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 742 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:35,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 474 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 13:47:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513891 states.