./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --- 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-dbf71c6-m [2022-10-17 17:39:29,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:29,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:30,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:30,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:30,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:30,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:30,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:30,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:30,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:30,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:30,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:30,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:30,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:30,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:30,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:30,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:30,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:30,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:30,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:30,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:30,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:30,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:30,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:30,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:30,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:30,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:30,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:30,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:30,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:30,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:30,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:30,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:30,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:30,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:30,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:30,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:30,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:30,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:30,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:30,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:30,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:39:30,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:30,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:30,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:30,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:30,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:30,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:30,199 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:30,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:30,199 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:30,200 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:39:30,201 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:30,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:30,201 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:39:30,202 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:39:30,202 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:30,202 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:39:30,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:39:30,203 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:39:30,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:30,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:39:30,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:39:30,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:39:30,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:30,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:30,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:30,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:30,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:39:30,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:30,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:30,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:30,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:30,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:30,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:30,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:30,209 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:39:30,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:30,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:30,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:39:30,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:39:30,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:30,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:30,211 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_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2022-10-17 17:39:30,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:30,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:30,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:30,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:30,531 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:30,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2022-10-17 17:39:30,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/data/6a945940a/991c9a98c1114b01847c6f3d07d4bcf1/FLAG45fe797df [2022-10-17 17:39:31,145 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:31,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2022-10-17 17:39:31,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/data/6a945940a/991c9a98c1114b01847c6f3d07d4bcf1/FLAG45fe797df [2022-10-17 17:39:31,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/data/6a945940a/991c9a98c1114b01847c6f3d07d4bcf1 [2022-10-17 17:39:31,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:31,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:31,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:31,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:31,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:31,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e88f74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:31, skipping insertion in model container [2022-10-17 17:39:31,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:31" (1/1) ... [2022-10-17 17:39:31,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:31,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:31,704 WARN L230 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_7ba1983f-4b44-4bbf-98ff-7932d95514f6/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2022-10-17 17:39:31,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:31,964 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:31,980 WARN L230 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_7ba1983f-4b44-4bbf-98ff-7932d95514f6/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2022-10-17 17:39:32,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:32,092 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:32,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32 WrapperNode [2022-10-17 17:39:32,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:32,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:32,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:32,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:32,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,169 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-10-17 17:39:32,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:32,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:32,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:32,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:32,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,205 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:32,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:32,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:32,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:32,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (1/1) ... [2022-10-17 17:39:32,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:32,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:32,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:32,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:39:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 17:39:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:39:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:39:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 17:39:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 17:39:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 17:39:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 17:39:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 17:39:32,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 17:39:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:39:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 17:39:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:32,315 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 17:39:32,445 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:32,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:32,652 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:32,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:32,661 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:39:32,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:32 BoogieIcfgContainer [2022-10-17 17:39:32,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:32,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:32,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:32,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:32,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:31" (1/3) ... [2022-10-17 17:39:32,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c996f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:32, skipping insertion in model container [2022-10-17 17:39:32,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:32" (2/3) ... [2022-10-17 17:39:32,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c996f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:32, skipping insertion in model container [2022-10-17 17:39:32,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:32" (3/3) ... [2022-10-17 17:39:32,673 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2022-10-17 17:39:32,682 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 17:39:32,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:32,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:32,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 17:39:32,782 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 17:39:32,834 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:39:32,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 201 flow [2022-10-17 17:39:32,849 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 201 flow [2022-10-17 17:39:32,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-10-17 17:39:32,929 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2022-10-17 17:39:32,931 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 17:39:32,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-10-17 17:39:32,937 INFO L118 LiptonReduction]: Number of co-enabled transitions 1620 [2022-10-17 17:39:35,726 INFO L133 LiptonReduction]: Checked pairs total: 2983 [2022-10-17 17:39:35,727 INFO L135 LiptonReduction]: Total number of compositions: 81 [2022-10-17 17:39:35,742 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2022-10-17 17:39:35,822 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:35,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:35,860 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;@256f8aab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:35,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 17:39:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:39:35,873 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:35,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:35,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:35,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 247013805, now seen corresponding path program 1 times [2022-10-17 17:39:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:35,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290896683] [2022-10-17 17:39:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:36,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:36,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290896683] [2022-10-17 17:39:36,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290896683] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:36,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:36,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285612102] [2022-10-17 17:39:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:39:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:39:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:36,224 INFO L87 Difference]: Start difference. First operand has 298 states, 297 states have (on average 3.1245791245791246) internal successors, (928), 297 states have internal predecessors, (928), 0 states have call successors, (0), 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, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:36,304 INFO L93 Difference]: Finished difference Result 298 states and 864 transitions. [2022-10-17 17:39:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:39:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:39:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:36,321 INFO L225 Difference]: With dead ends: 298 [2022-10-17 17:39:36,322 INFO L226 Difference]: Without dead ends: 298 [2022-10-17 17:39:36,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:39:36,326 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:36,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:39:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-10-17 17:39:36,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-10-17 17:39:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 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) [2022-10-17 17:39:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2022-10-17 17:39:36,396 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2022-10-17 17:39:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:36,397 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2022-10-17 17:39:36,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2022-10-17 17:39:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:39:36,400 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:36,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:36,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:39:36,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash -932511705, now seen corresponding path program 1 times [2022-10-17 17:39:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:36,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057360305] [2022-10-17 17:39:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:36,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057360305] [2022-10-17 17:39:36,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057360305] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:36,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:36,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:39:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248337532] [2022-10-17 17:39:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:36,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:39:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:39:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:39:36,710 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:36,787 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2022-10-17 17:39:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:39:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-10-17 17:39:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:36,792 INFO L225 Difference]: With dead ends: 330 [2022-10-17 17:39:36,792 INFO L226 Difference]: Without dead ends: 266 [2022-10-17 17:39:36,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:36,794 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:36,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 15 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-10-17 17:39:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2022-10-17 17:39:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2022-10-17 17:39:36,821 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2022-10-17 17:39:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:36,821 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2022-10-17 17:39:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2022-10-17 17:39:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:39:36,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:36,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:36,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:39:36,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:36,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1156863748, now seen corresponding path program 1 times [2022-10-17 17:39:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:36,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144180693] [2022-10-17 17:39:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:36,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:37,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144180693] [2022-10-17 17:39:37,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144180693] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:37,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:37,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452370784] [2022-10-17 17:39:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:37,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:37,083 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:37,250 INFO L93 Difference]: Finished difference Result 338 states and 926 transitions. [2022-10-17 17:39:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:39:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:39:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:37,255 INFO L225 Difference]: With dead ends: 338 [2022-10-17 17:39:37,255 INFO L226 Difference]: Without dead ends: 282 [2022-10-17 17:39:37,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:39:37,259 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:37,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 15 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-10-17 17:39:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-10-17 17:39:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.804270462633452) internal successors, (788), 281 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 788 transitions. [2022-10-17 17:39:37,293 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 788 transitions. Word has length 10 [2022-10-17 17:39:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:37,293 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 788 transitions. [2022-10-17 17:39:37,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 788 transitions. [2022-10-17 17:39:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:39:37,300 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:37,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:37,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:39:37,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:37,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1502969326, now seen corresponding path program 1 times [2022-10-17 17:39:37,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:37,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735813006] [2022-10-17 17:39:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:37,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:37,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735813006] [2022-10-17 17:39:37,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735813006] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:37,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:37,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:37,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319250217] [2022-10-17 17:39:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:37,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:37,536 INFO L87 Difference]: Start difference. First operand 282 states and 788 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:37,620 INFO L93 Difference]: Finished difference Result 322 states and 870 transitions. [2022-10-17 17:39:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:37,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2022-10-17 17:39:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:37,622 INFO L225 Difference]: With dead ends: 322 [2022-10-17 17:39:37,623 INFO L226 Difference]: Without dead ends: 170 [2022-10-17 17:39:37,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:39:37,626 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:37,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 15 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-10-17 17:39:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-10-17 17:39:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.5562130177514795) internal successors, (432), 169 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2022-10-17 17:39:37,637 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2022-10-17 17:39:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:37,637 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2022-10-17 17:39:37,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2022-10-17 17:39:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:39:37,640 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:37,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:39:37,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash -663896617, now seen corresponding path program 1 times [2022-10-17 17:39:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:37,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105608796] [2022-10-17 17:39:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:37,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:37,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105608796] [2022-10-17 17:39:37,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105608796] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:37,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:37,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356675607] [2022-10-17 17:39:37,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:37,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:39:37,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:39:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:39:37,812 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:37,896 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2022-10-17 17:39:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:39:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-10-17 17:39:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:37,900 INFO L225 Difference]: With dead ends: 183 [2022-10-17 17:39:37,900 INFO L226 Difference]: Without dead ends: 143 [2022-10-17 17:39:37,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:37,905 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:37,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-10-17 17:39:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-10-17 17:39:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.323943661971831) internal successors, (330), 142 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2022-10-17 17:39:37,912 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2022-10-17 17:39:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:37,913 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2022-10-17 17:39:37,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2022-10-17 17:39:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:39:37,914 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:37,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:37,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:39:37,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:37,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:37,916 INFO L85 PathProgramCache]: Analyzing trace with hash -728412426, now seen corresponding path program 1 times [2022-10-17 17:39:37,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:37,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475619828] [2022-10-17 17:39:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:37,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:38,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:38,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475619828] [2022-10-17 17:39:38,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475619828] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:38,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:38,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:38,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944787442] [2022-10-17 17:39:38,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:38,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:38,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:38,064 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2022-10-17 17:39:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:38,140 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2022-10-17 17:39:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:39:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 [2022-10-17 17:39:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:38,141 INFO L225 Difference]: With dead ends: 129 [2022-10-17 17:39:38,141 INFO L226 Difference]: Without dead ends: 104 [2022-10-17 17:39:38,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:39:38,142 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:38,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-10-17 17:39:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-10-17 17:39:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.087378640776699) internal successors, (215), 103 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2022-10-17 17:39:38,147 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2022-10-17 17:39:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:38,147 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2022-10-17 17:39:38,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2022-10-17 17:39:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2022-10-17 17:39:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:39:38,148 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:38,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:38,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:39:38,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1113689, now seen corresponding path program 1 times [2022-10-17 17:39:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:38,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190994580] [2022-10-17 17:39:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:38,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:38,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190994580] [2022-10-17 17:39:38,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190994580] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:38,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:38,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:39:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250521667] [2022-10-17 17:39:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:39:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:39:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:39:38,307 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:38,387 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2022-10-17 17:39:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:39:38,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-17 17:39:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:38,388 INFO L225 Difference]: With dead ends: 93 [2022-10-17 17:39:38,389 INFO L226 Difference]: Without dead ends: 85 [2022-10-17 17:39:38,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:39:38,390 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:38,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 15 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-10-17 17:39:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-10-17 17:39:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 2.107142857142857) internal successors, (177), 84 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2022-10-17 17:39:38,396 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2022-10-17 17:39:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:38,397 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2022-10-17 17:39:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2022-10-17 17:39:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:39:38,399 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:38,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:38,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:39:38,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1160525456, now seen corresponding path program 1 times [2022-10-17 17:39:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:38,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609673490] [2022-10-17 17:39:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:38,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:38,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:38,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609673490] [2022-10-17 17:39:38,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609673490] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:38,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:38,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570326753] [2022-10-17 17:39:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:38,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:38,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:38,552 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2022-10-17 17:39:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:38,627 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2022-10-17 17:39:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:39:38,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 [2022-10-17 17:39:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:38,629 INFO L225 Difference]: With dead ends: 99 [2022-10-17 17:39:38,629 INFO L226 Difference]: Without dead ends: 37 [2022-10-17 17:39:38,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:39:38,631 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:38,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-10-17 17:39:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-10-17 17:39:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2022-10-17 17:39:38,634 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2022-10-17 17:39:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:38,635 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2022-10-17 17:39:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2022-10-17 17:39:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2022-10-17 17:39:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:39:38,636 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:38,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:38,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 17:39:38,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 17:39:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash -922651270, now seen corresponding path program 2 times [2022-10-17 17:39:38,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:38,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201513563] [2022-10-17 17:39:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:39:38,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:38,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201513563] [2022-10-17 17:39:38,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201513563] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:38,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:38,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:39:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594694962] [2022-10-17 17:39:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:39:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:38,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:39:38,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:39:38,828 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2022-10-17 17:39:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:38,899 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2022-10-17 17:39:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:39:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 [2022-10-17 17:39:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:38,900 INFO L225 Difference]: With dead ends: 36 [2022-10-17 17:39:38,901 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:39:38,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:39:38,903 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:38,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:39:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:39:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:39:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:39:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:39:38,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-10-17 17:39:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:38,905 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:39:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2022-10-17 17:39:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:39:38,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:39:38,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-10-17 17:39:38,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-10-17 17:39:38,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 17:39:38,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-10-17 17:39:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 17:39:38,912 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:38,916 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 17:39:38,916 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:39:38,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:39:38 BasicIcfg [2022-10-17 17:39:38,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:39:38,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:39:38,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:39:38,921 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:39:38,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:32" (3/4) ... [2022-10-17 17:39:38,924 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:39:38,931 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-10-17 17:39:38,931 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-10-17 17:39:38,932 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-10-17 17:39:38,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-10-17 17:39:38,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 17:39:38,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 17:39:38,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:39:38,980 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:39:38,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:39:38,981 INFO L158 Benchmark]: Toolchain (without parser) took 7561.54ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 46.9MB in the beginning and 118.0MB in the end (delta: -71.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:38,982 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:38,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 671.60ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 46.7MB in the beginning and 68.8MB in the end (delta: -22.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-10-17 17:39:38,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.01ms. Allocated memory is still 104.9MB. Free memory was 68.8MB in the beginning and 66.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:39:38,983 INFO L158 Benchmark]: Boogie Preprocessor took 53.15ms. Allocated memory is still 104.9MB. Free memory was 66.7MB in the beginning and 65.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:38,983 INFO L158 Benchmark]: RCFGBuilder took 439.86ms. Allocated memory is still 104.9MB. Free memory was 65.1MB in the beginning and 51.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 17:39:38,984 INFO L158 Benchmark]: TraceAbstraction took 6253.43ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 50.7MB in the beginning and 120.1MB in the end (delta: -69.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:39:38,984 INFO L158 Benchmark]: Witness Printer took 60.35ms. Allocated memory is still 151.0MB. Free memory was 120.1MB in the beginning and 118.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:39:38,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 671.60ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 46.7MB in the beginning and 68.8MB in the end (delta: -22.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.01ms. Allocated memory is still 104.9MB. Free memory was 68.8MB in the beginning and 66.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.15ms. Allocated memory is still 104.9MB. Free memory was 66.7MB in the beginning and 65.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 439.86ms. Allocated memory is still 104.9MB. Free memory was 65.1MB in the beginning and 51.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6253.43ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 50.7MB in the beginning and 120.1MB in the end (delta: -69.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 60.35ms. Allocated memory is still 151.0MB. Free memory was 120.1MB in the beginning and 118.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 101 PlacesBefore, 32 PlacesAfterwards, 93 TransitionsBefore, 23 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 81 TotalNumberOfCompositions, 2983 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1982, positive: 1891, positive conditional: 0, positive unconditional: 1891, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1197, positive: 1159, positive conditional: 0, positive unconditional: 1159, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1197, positive: 1154, positive conditional: 0, positive unconditional: 1154, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1982, positive: 732, positive conditional: 0, positive unconditional: 732, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 1197, unknown conditional: 0, unknown unconditional: 1197] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 249 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529 IncrementalHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 45 mSDtfsCounter, 529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 297 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-17 17:39:39,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ba1983f-4b44-4bbf-98ff-7932d95514f6/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE