./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_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_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --- 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 10:31:46,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:46,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:46,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:46,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:46,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:46,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:46,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:46,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:46,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:46,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:46,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:46,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:46,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:46,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:46,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:46,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:46,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:46,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:46,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:46,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:46,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:46,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:46,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:46,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:46,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:46,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:46,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:46,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:46,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:46,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:46,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:46,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:46,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:46,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:46,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:46,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:46,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:46,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:46,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:46,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:46,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:31:46,237 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:46,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:46,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:46,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:46,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:46,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:46,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:46,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:46,241 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:46,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:46,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:31:46,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:31:46,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:31:46,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:46,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:46,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:46,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:46,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:31:46,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:46,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:46,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:46,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:46,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:46,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:46,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:46,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:46,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:46,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:46,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:31:46,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:31:46,249 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:46,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:46,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:46,249 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_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e [2022-10-17 10:31:46,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:46,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:46,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:46,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:46,601 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:46,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe011_tso.i [2022-10-17 10:31:46,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/data/4b2120490/ba3d86094a2549d4b9c60945205a9e58/FLAG8c672ac3d [2022-10-17 10:31:47,147 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:47,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2022-10-17 10:31:47,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/data/4b2120490/ba3d86094a2549d4b9c60945205a9e58/FLAG8c672ac3d [2022-10-17 10:31:47,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/data/4b2120490/ba3d86094a2549d4b9c60945205a9e58 [2022-10-17 10:31:47,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:47,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:47,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:47,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:47,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:47,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:47" (1/1) ... [2022-10-17 10:31:47,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@efb187d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:47, skipping insertion in model container [2022-10-17 10:31:47,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:47" (1/1) ... [2022-10-17 10:31:47,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:31:47,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:31:47,758 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_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/sv-benchmarks/c/pthread-wmm/safe011_tso.i[945,958] [2022-10-17 10:31:47,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:47,995 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:31:48,009 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_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/sv-benchmarks/c/pthread-wmm/safe011_tso.i[945,958] [2022-10-17 10:31:48,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:31:48,131 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:31:48,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48 WrapperNode [2022-10-17 10:31:48,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:48,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:48,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:31:48,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:31:48,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,205 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-10-17 10:31:48,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:31:48,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:31:48,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:31:48,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:31:48,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:31:48,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:31:48,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:31:48,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:31:48,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (1/1) ... [2022-10-17 10:31:48,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:31:48,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:31:48,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:31:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:31:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:31:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:31:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:31:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:31:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:31:48,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:31:48,337 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:31:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:31:48,338 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:31:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:31:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:31:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:31:48,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:31:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:31:48,340 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:31:48,463 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:31:48,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:31:48,728 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:31:48,736 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:31:48,736 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:31:48,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:48 BoogieIcfgContainer [2022-10-17 10:31:48,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:31:48,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:31:48,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:31:48,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:31:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:47" (1/3) ... [2022-10-17 10:31:48,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a7ac44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:48, skipping insertion in model container [2022-10-17 10:31:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:48" (2/3) ... [2022-10-17 10:31:48,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a7ac44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:31:48, skipping insertion in model container [2022-10-17 10:31:48,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:48" (3/3) ... [2022-10-17 10:31:48,756 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2022-10-17 10:31:48,765 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:31:48,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:31:48,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:31:48,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:31:48,836 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:31:48,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-10-17 10:31:48,994 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-10-17 10:31:48,994 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:31:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-10-17 10:31:48,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-10-17 10:31:49,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-10-17 10:31:49,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:31:49,025 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=PETRI_NET, 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;@fd2bc87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:31:49,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:31:49,050 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-10-17 10:31:49,051 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:31:49,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:49,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:49,052 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 10:31:49,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1250208404, now seen corresponding path program 1 times [2022-10-17 10:31:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906617049] [2022-10-17 10:31:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:49,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:50,045 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 10:31:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:50,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906617049] [2022-10-17 10:31:50,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906617049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:50,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:50,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:31:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218414405] [2022-10-17 10:31:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:50,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:31:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:31:50,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:31:50,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-10-17 10:31:50,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 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 10:31:50,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:50,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-10-17 10:31:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:50,552 INFO L130 PetriNetUnfolder]: 356/886 cut-off events. [2022-10-17 10:31:50,553 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-10-17 10:31:50,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 886 events. 356/886 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5159 event pairs, 66 based on Foata normal form. 27/883 useless extension candidates. Maximal degree in co-relation 1492. Up to 217 conditions per place. [2022-10-17 10:31:50,565 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 22 selfloop transitions, 6 changer transitions 37/121 dead transitions. [2022-10-17 10:31:50,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 387 flow [2022-10-17 10:31:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:31:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:31:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2022-10-17 10:31:50,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8534798534798534 [2022-10-17 10:31:50,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2022-10-17 10:31:50,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2022-10-17 10:31:50,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2022-10-17 10:31:50,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 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 10:31:50,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:50,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:50,619 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 699 transitions. [2022-10-17 10:31:50,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 387 flow [2022-10-17 10:31:50,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:31:50,633 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 240 flow [2022-10-17 10:31:50,636 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2022-10-17 10:31:50,646 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2022-10-17 10:31:50,647 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 240 flow [2022-10-17 10:31:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 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 10:31:50,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:50,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:31:50,651 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 10:31:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1200374687, now seen corresponding path program 1 times [2022-10-17 10:31:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:50,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214522280] [2022-10-17 10:31:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:51,094 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 10:31:51,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214522280] [2022-10-17 10:31:51,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214522280] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:51,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:51,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097754376] [2022-10-17 10:31:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:51,104 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-10-17 10:31:51,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 10:31:51,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:51,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-10-17 10:31:51,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:51,586 INFO L130 PetriNetUnfolder]: 240/811 cut-off events. [2022-10-17 10:31:51,586 INFO L131 PetriNetUnfolder]: For 1327/1511 co-relation queries the response was YES. [2022-10-17 10:31:51,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 811 events. 240/811 cut-off events. For 1327/1511 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5224 event pairs, 17 based on Foata normal form. 25/818 useless extension candidates. Maximal degree in co-relation 2281. Up to 176 conditions per place. [2022-10-17 10:31:51,597 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 27 selfloop transitions, 11 changer transitions 64/158 dead transitions. [2022-10-17 10:31:51,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 158 transitions, 1024 flow [2022-10-17 10:31:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:31:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:31:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1002 transitions. [2022-10-17 10:31:51,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469991546914624 [2022-10-17 10:31:51,603 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1002 transitions. [2022-10-17 10:31:51,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1002 transitions. [2022-10-17 10:31:51,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:51,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1002 transitions. [2022-10-17 10:31:51,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.07692307692308) internal successors, (1002), 13 states have internal predecessors, (1002), 0 states have call successors, (0), 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 10:31:51,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:51,632 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:51,632 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 240 flow. Second operand 13 states and 1002 transitions. [2022-10-17 10:31:51,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 158 transitions, 1024 flow [2022-10-17 10:31:51,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 158 transitions, 948 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:31:51,645 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 372 flow [2022-10-17 10:31:51,646 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=372, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2022-10-17 10:31:51,647 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2022-10-17 10:31:51,647 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 372 flow [2022-10-17 10:31:51,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 10:31:51,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:51,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:31:51,649 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 10:31:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash 771682797, now seen corresponding path program 1 times [2022-10-17 10:31:51,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:51,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922163404] [2022-10-17 10:31:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:51,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:51,873 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 10:31:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:51,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922163404] [2022-10-17 10:31:51,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922163404] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:51,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:51,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:51,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879230459] [2022-10-17 10:31:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:51,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:51,879 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-10-17 10:31:51,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 10:31:51,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:51,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-10-17 10:31:51,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:52,190 INFO L130 PetriNetUnfolder]: 137/471 cut-off events. [2022-10-17 10:31:52,191 INFO L131 PetriNetUnfolder]: For 2152/2562 co-relation queries the response was YES. [2022-10-17 10:31:52,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 471 events. 137/471 cut-off events. For 2152/2562 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2384 event pairs, 9 based on Foata normal form. 13/466 useless extension candidates. Maximal degree in co-relation 1753. Up to 95 conditions per place. [2022-10-17 10:31:52,199 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 28 selfloop transitions, 12 changer transitions 40/136 dead transitions. [2022-10-17 10:31:52,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 136 transitions, 1016 flow [2022-10-17 10:31:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:31:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:31:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-10-17 10:31:52,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2022-10-17 10:31:52,204 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-10-17 10:31:52,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-10-17 10:31:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:52,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-10-17 10:31:52,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 0 states have call successors, (0), 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 10:31:52,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:52,213 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:52,213 INFO L175 Difference]: Start difference. First operand has 112 places, 85 transitions, 372 flow. Second operand 13 states and 978 transitions. [2022-10-17 10:31:52,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 136 transitions, 1016 flow [2022-10-17 10:31:52,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 136 transitions, 962 flow, removed 27 selfloop flow, removed 0 redundant places. [2022-10-17 10:31:52,229 INFO L231 Difference]: Finished difference. Result has 127 places, 90 transitions, 482 flow [2022-10-17 10:31:52,229 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=482, PETRI_PLACES=127, PETRI_TRANSITIONS=90} [2022-10-17 10:31:52,230 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2022-10-17 10:31:52,231 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 90 transitions, 482 flow [2022-10-17 10:31:52,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 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 10:31:52,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:52,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:52,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:31:52,232 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 10:31:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2116782668, now seen corresponding path program 1 times [2022-10-17 10:31:52,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:52,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248405864] [2022-10-17 10:31:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:52,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:52,445 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 10:31:52,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:52,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248405864] [2022-10-17 10:31:52,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248405864] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:52,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:52,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:52,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334183576] [2022-10-17 10:31:52,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:52,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:52,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:52,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:52,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-10-17 10:31:52,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 90 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 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 10:31:52,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:52,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-10-17 10:31:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:52,768 INFO L130 PetriNetUnfolder]: 98/426 cut-off events. [2022-10-17 10:31:52,768 INFO L131 PetriNetUnfolder]: For 2482/2945 co-relation queries the response was YES. [2022-10-17 10:31:52,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 426 events. 98/426 cut-off events. For 2482/2945 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2223 event pairs, 7 based on Foata normal form. 8/423 useless extension candidates. Maximal degree in co-relation 1615. Up to 79 conditions per place. [2022-10-17 10:31:52,778 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 29 selfloop transitions, 18 changer transitions 31/134 dead transitions. [2022-10-17 10:31:52,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 1120 flow [2022-10-17 10:31:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:31:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:31:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-10-17 10:31:52,783 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2022-10-17 10:31:52,784 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-10-17 10:31:52,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-10-17 10:31:52,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:52,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-10-17 10:31:52,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 0 states have call successors, (0), 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 10:31:52,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:52,793 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:52,794 INFO L175 Difference]: Start difference. First operand has 127 places, 90 transitions, 482 flow. Second operand 13 states and 978 transitions. [2022-10-17 10:31:52,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 1120 flow [2022-10-17 10:31:52,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 134 transitions, 1013 flow, removed 51 selfloop flow, removed 13 redundant places. [2022-10-17 10:31:52,817 INFO L231 Difference]: Finished difference. Result has 127 places, 93 transitions, 537 flow [2022-10-17 10:31:52,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=537, PETRI_PLACES=127, PETRI_TRANSITIONS=93} [2022-10-17 10:31:52,818 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2022-10-17 10:31:52,819 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 93 transitions, 537 flow [2022-10-17 10:31:52,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 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 10:31:52,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:52,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:52,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:31:52,820 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 10:31:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -797803244, now seen corresponding path program 1 times [2022-10-17 10:31:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625587518] [2022-10-17 10:31:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:52,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:53,043 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 10:31:53,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625587518] [2022-10-17 10:31:53,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625587518] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:53,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:53,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:53,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484896318] [2022-10-17 10:31:53,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:53,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:53,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:53,048 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-10-17 10:31:53,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 93 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 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 10:31:53,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:53,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-10-17 10:31:53,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:53,322 INFO L130 PetriNetUnfolder]: 71/424 cut-off events. [2022-10-17 10:31:53,322 INFO L131 PetriNetUnfolder]: For 2471/2735 co-relation queries the response was YES. [2022-10-17 10:31:53,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 424 events. 71/424 cut-off events. For 2471/2735 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2322 event pairs, 1 based on Foata normal form. 10/426 useless extension candidates. Maximal degree in co-relation 1516. Up to 65 conditions per place. [2022-10-17 10:31:53,330 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 30 selfloop transitions, 19 changer transitions 23/128 dead transitions. [2022-10-17 10:31:53,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 1079 flow [2022-10-17 10:31:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:31:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:31:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 968 transitions. [2022-10-17 10:31:53,334 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2022-10-17 10:31:53,335 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 968 transitions. [2022-10-17 10:31:53,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 968 transitions. [2022-10-17 10:31:53,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:53,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 968 transitions. [2022-10-17 10:31:53,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.46153846153847) internal successors, (968), 13 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:53,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:53,344 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:53,344 INFO L175 Difference]: Start difference. First operand has 127 places, 93 transitions, 537 flow. Second operand 13 states and 968 transitions. [2022-10-17 10:31:53,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 1079 flow [2022-10-17 10:31:53,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 128 transitions, 943 flow, removed 55 selfloop flow, removed 13 redundant places. [2022-10-17 10:31:53,362 INFO L231 Difference]: Finished difference. Result has 128 places, 93 transitions, 582 flow [2022-10-17 10:31:53,362 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=582, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2022-10-17 10:31:53,363 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2022-10-17 10:31:53,363 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 582 flow [2022-10-17 10:31:53,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 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 10:31:53,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:53,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:31:53,365 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 10:31:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1307687736, now seen corresponding path program 1 times [2022-10-17 10:31:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:53,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575046532] [2022-10-17 10:31:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:53,545 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 10:31:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575046532] [2022-10-17 10:31:53,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575046532] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:53,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:53,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:53,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999311274] [2022-10-17 10:31:53,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:53,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-10-17 10:31:53,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 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 10:31:53,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:53,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-10-17 10:31:53,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:53,799 INFO L130 PetriNetUnfolder]: 55/360 cut-off events. [2022-10-17 10:31:53,800 INFO L131 PetriNetUnfolder]: For 2530/3192 co-relation queries the response was YES. [2022-10-17 10:31:53,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 360 events. 55/360 cut-off events. For 2530/3192 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1903 event pairs, 3 based on Foata normal form. 7/356 useless extension candidates. Maximal degree in co-relation 1379. Up to 57 conditions per place. [2022-10-17 10:31:53,805 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 27 selfloop transitions, 17 changer transitions 24/124 dead transitions. [2022-10-17 10:31:53,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1088 flow [2022-10-17 10:31:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:31:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:31:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 966 transitions. [2022-10-17 10:31:53,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8165680473372781 [2022-10-17 10:31:53,810 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 966 transitions. [2022-10-17 10:31:53,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 966 transitions. [2022-10-17 10:31:53,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:53,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 966 transitions. [2022-10-17 10:31:53,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.3076923076923) internal successors, (966), 13 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:53,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:53,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:53,819 INFO L175 Difference]: Start difference. First operand has 128 places, 93 transitions, 582 flow. Second operand 13 states and 966 transitions. [2022-10-17 10:31:53,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1088 flow [2022-10-17 10:31:53,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 124 transitions, 980 flow, removed 54 selfloop flow, removed 7 redundant places. [2022-10-17 10:31:53,834 INFO L231 Difference]: Finished difference. Result has 134 places, 90 transitions, 567 flow [2022-10-17 10:31:53,835 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=567, PETRI_PLACES=134, PETRI_TRANSITIONS=90} [2022-10-17 10:31:53,836 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 51 predicate places. [2022-10-17 10:31:53,836 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 90 transitions, 567 flow [2022-10-17 10:31:53,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 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 10:31:53,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:53,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:53,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:31:53,837 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 10:31:53,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1121237457, now seen corresponding path program 1 times [2022-10-17 10:31:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:53,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973001477] [2022-10-17 10:31:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:54,036 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 10:31:54,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:54,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973001477] [2022-10-17 10:31:54,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973001477] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:54,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:54,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:54,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973225731] [2022-10-17 10:31:54,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:54,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:54,041 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-10-17 10:31:54,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 90 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 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 10:31:54,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:54,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-10-17 10:31:54,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:54,371 INFO L130 PetriNetUnfolder]: 195/673 cut-off events. [2022-10-17 10:31:54,372 INFO L131 PetriNetUnfolder]: For 6331/7687 co-relation queries the response was YES. [2022-10-17 10:31:54,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 673 events. 195/673 cut-off events. For 6331/7687 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3919 event pairs, 6 based on Foata normal form. 12/664 useless extension candidates. Maximal degree in co-relation 2852. Up to 111 conditions per place. [2022-10-17 10:31:54,384 INFO L137 encePairwiseOnDemand]: 79/91 looper letters, 43 selfloop transitions, 25 changer transitions 39/161 dead transitions. [2022-10-17 10:31:54,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 161 transitions, 1760 flow [2022-10-17 10:31:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:31:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:31:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 821 transitions. [2022-10-17 10:31:54,388 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8201798201798202 [2022-10-17 10:31:54,388 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 821 transitions. [2022-10-17 10:31:54,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 821 transitions. [2022-10-17 10:31:54,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:54,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 821 transitions. [2022-10-17 10:31:54,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.63636363636364) internal successors, (821), 11 states have internal predecessors, (821), 0 states have call successors, (0), 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 10:31:54,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 10:31:54,396 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 10:31:54,396 INFO L175 Difference]: Start difference. First operand has 134 places, 90 transitions, 567 flow. Second operand 11 states and 821 transitions. [2022-10-17 10:31:54,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 161 transitions, 1760 flow [2022-10-17 10:31:54,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 161 transitions, 1478 flow, removed 102 selfloop flow, removed 13 redundant places. [2022-10-17 10:31:54,416 INFO L231 Difference]: Finished difference. Result has 132 places, 101 transitions, 788 flow [2022-10-17 10:31:54,417 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=788, PETRI_PLACES=132, PETRI_TRANSITIONS=101} [2022-10-17 10:31:54,417 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 49 predicate places. [2022-10-17 10:31:54,418 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 101 transitions, 788 flow [2022-10-17 10:31:54,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 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 10:31:54,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:54,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:54,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:31:54,419 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 10:31:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2106463791, now seen corresponding path program 2 times [2022-10-17 10:31:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277484785] [2022-10-17 10:31:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:54,629 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 10:31:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:54,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277484785] [2022-10-17 10:31:54,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277484785] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:54,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:54,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:31:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695231191] [2022-10-17 10:31:54,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:31:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:31:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:31:54,633 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-10-17 10:31:54,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 101 transitions, 788 flow. Second operand has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 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 10:31:54,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:54,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-10-17 10:31:54,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:54,896 INFO L130 PetriNetUnfolder]: 136/574 cut-off events. [2022-10-17 10:31:54,897 INFO L131 PetriNetUnfolder]: For 5968/7166 co-relation queries the response was YES. [2022-10-17 10:31:54,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 574 events. 136/574 cut-off events. For 5968/7166 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3403 event pairs, 11 based on Foata normal form. 24/578 useless extension candidates. Maximal degree in co-relation 2419. Up to 77 conditions per place. [2022-10-17 10:31:54,905 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 26 selfloop transitions, 8 changer transitions 68/156 dead transitions. [2022-10-17 10:31:54,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 156 transitions, 1728 flow [2022-10-17 10:31:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:31:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:31:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 807 transitions. [2022-10-17 10:31:54,909 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8061938061938062 [2022-10-17 10:31:54,909 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 807 transitions. [2022-10-17 10:31:54,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 807 transitions. [2022-10-17 10:31:54,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:54,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 807 transitions. [2022-10-17 10:31:54,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.36363636363636) internal successors, (807), 11 states have internal predecessors, (807), 0 states have call successors, (0), 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 10:31:54,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 10:31:54,917 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 10:31:54,917 INFO L175 Difference]: Start difference. First operand has 132 places, 101 transitions, 788 flow. Second operand 11 states and 807 transitions. [2022-10-17 10:31:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 156 transitions, 1728 flow [2022-10-17 10:31:54,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 156 transitions, 1616 flow, removed 56 selfloop flow, removed 9 redundant places. [2022-10-17 10:31:54,939 INFO L231 Difference]: Finished difference. Result has 135 places, 81 transitions, 445 flow [2022-10-17 10:31:54,939 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=445, PETRI_PLACES=135, PETRI_TRANSITIONS=81} [2022-10-17 10:31:54,940 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 52 predicate places. [2022-10-17 10:31:54,940 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 81 transitions, 445 flow [2022-10-17 10:31:54,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 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 10:31:54,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:54,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:54,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:31:54,942 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 10:31:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash 587283615, now seen corresponding path program 1 times [2022-10-17 10:31:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:54,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257676485] [2022-10-17 10:31:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:55,176 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 10:31:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:55,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257676485] [2022-10-17 10:31:55,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257676485] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:55,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:55,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:31:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348574462] [2022-10-17 10:31:55,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:55,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:31:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:31:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:31:55,180 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-10-17 10:31:55,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 81 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 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 10:31:55,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:55,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-10-17 10:31:55,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:55,467 INFO L130 PetriNetUnfolder]: 386/1013 cut-off events. [2022-10-17 10:31:55,468 INFO L131 PetriNetUnfolder]: For 1549/1599 co-relation queries the response was YES. [2022-10-17 10:31:55,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2270 conditions, 1013 events. 386/1013 cut-off events. For 1549/1599 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7265 event pairs, 11 based on Foata normal form. 0/941 useless extension candidates. Maximal degree in co-relation 2236. Up to 276 conditions per place. [2022-10-17 10:31:55,478 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 26 selfloop transitions, 15 changer transitions 5/113 dead transitions. [2022-10-17 10:31:55,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 113 transitions, 605 flow [2022-10-17 10:31:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:31:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:31:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-10-17 10:31:55,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2022-10-17 10:31:55,482 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-10-17 10:31:55,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-10-17 10:31:55,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:55,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-10-17 10:31:55,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 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 10:31:55,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:55,489 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:55,489 INFO L175 Difference]: Start difference. First operand has 135 places, 81 transitions, 445 flow. Second operand 10 states and 788 transitions. [2022-10-17 10:31:55,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 113 transitions, 605 flow [2022-10-17 10:31:55,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 439 flow, removed 21 selfloop flow, removed 28 redundant places. [2022-10-17 10:31:55,500 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 388 flow [2022-10-17 10:31:55,500 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=388, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2022-10-17 10:31:55,501 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2022-10-17 10:31:55,501 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 388 flow [2022-10-17 10:31:55,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 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 10:31:55,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:55,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:55,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:31:55,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 10:31:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash 293920330, now seen corresponding path program 1 times [2022-10-17 10:31:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:55,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105100158] [2022-10-17 10:31:55,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:55,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:55,678 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 10:31:55,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:55,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105100158] [2022-10-17 10:31:55,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105100158] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:55,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:55,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:31:55,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240990200] [2022-10-17 10:31:55,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:55,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:31:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:55,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:31:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:31:55,682 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-10-17 10:31:55,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 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 10:31:55,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:55,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-10-17 10:31:55,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:55,997 INFO L130 PetriNetUnfolder]: 372/964 cut-off events. [2022-10-17 10:31:55,998 INFO L131 PetriNetUnfolder]: For 2398/2824 co-relation queries the response was YES. [2022-10-17 10:31:56,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 964 events. 372/964 cut-off events. For 2398/2824 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7074 event pairs, 0 based on Foata normal form. 82/1000 useless extension candidates. Maximal degree in co-relation 3335. Up to 405 conditions per place. [2022-10-17 10:31:56,006 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 12 selfloop transitions, 9 changer transitions 47/132 dead transitions. [2022-10-17 10:31:56,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 754 flow [2022-10-17 10:31:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:31:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:31:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1023 transitions. [2022-10-17 10:31:56,010 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647506339814032 [2022-10-17 10:31:56,010 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1023 transitions. [2022-10-17 10:31:56,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1023 transitions. [2022-10-17 10:31:56,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:56,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1023 transitions. [2022-10-17 10:31:56,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.6923076923077) internal successors, (1023), 13 states have internal predecessors, (1023), 0 states have call successors, (0), 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 10:31:56,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:56,018 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 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 10:31:56,018 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 388 flow. Second operand 13 states and 1023 transitions. [2022-10-17 10:31:56,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 754 flow [2022-10-17 10:31:56,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 132 transitions, 740 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-10-17 10:31:56,028 INFO L231 Difference]: Finished difference. Result has 132 places, 82 transitions, 357 flow [2022-10-17 10:31:56,028 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=357, PETRI_PLACES=132, PETRI_TRANSITIONS=82} [2022-10-17 10:31:56,029 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 49 predicate places. [2022-10-17 10:31:56,029 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 82 transitions, 357 flow [2022-10-17 10:31:56,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 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 10:31:56,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:31:56,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:56,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:31:56,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 10:31:56,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:31:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash -821280399, now seen corresponding path program 1 times [2022-10-17 10:31:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:31:56,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352766159] [2022-10-17 10:31:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:31:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:31:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:31:56,214 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 10:31:56,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:31:56,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352766159] [2022-10-17 10:31:56,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352766159] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:31:56,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:31:56,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:31:56,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277890966] [2022-10-17 10:31:56,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:31:56,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:31:56,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:31:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:31:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:31:56,218 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-10-17 10:31:56,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 82 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 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 10:31:56,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:31:56,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-10-17 10:31:56,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:31:56,407 INFO L130 PetriNetUnfolder]: 31/225 cut-off events. [2022-10-17 10:31:56,407 INFO L131 PetriNetUnfolder]: For 917/1004 co-relation queries the response was YES. [2022-10-17 10:31:56,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 225 events. 31/225 cut-off events. For 917/1004 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 996 event pairs, 1 based on Foata normal form. 36/255 useless extension candidates. Maximal degree in co-relation 766. Up to 51 conditions per place. [2022-10-17 10:31:56,410 INFO L137 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2022-10-17 10:31:56,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 89 transitions, 514 flow [2022-10-17 10:31:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:31:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:31:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 848 transitions. [2022-10-17 10:31:56,413 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8471528471528471 [2022-10-17 10:31:56,413 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 848 transitions. [2022-10-17 10:31:56,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 848 transitions. [2022-10-17 10:31:56,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:31:56,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 848 transitions. [2022-10-17 10:31:56,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.0909090909091) internal successors, (848), 11 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:31:56,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 10:31:56,420 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 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 10:31:56,420 INFO L175 Difference]: Start difference. First operand has 132 places, 82 transitions, 357 flow. Second operand 11 states and 848 transitions. [2022-10-17 10:31:56,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 89 transitions, 514 flow [2022-10-17 10:31:56,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 89 transitions, 401 flow, removed 36 selfloop flow, removed 16 redundant places. [2022-10-17 10:31:56,426 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2022-10-17 10:31:56,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2022-10-17 10:31:56,427 INFO L287 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2022-10-17 10:31:56,427 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2022-10-17 10:31:56,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 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 10:31:56,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-10-17 10:31:56,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-10-17 10:31:56,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:31:56,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-10-17 10:31:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:31:56,432 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:31:56,436 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-10-17 10:31:56,436 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:31:56,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:31:56 BasicIcfg [2022-10-17 10:31:56,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:31:56,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:31:56,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:31:56,442 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:31:56,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:31:48" (3/4) ... [2022-10-17 10:31:56,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 10:31:56,453 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-10-17 10:31:56,453 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-10-17 10:31:56,453 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-10-17 10:31:56,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-10-17 10:31:56,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-10-17 10:31:56,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-10-17 10:31:56,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 10:31:56,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:31:56,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:31:56,493 INFO L158 Benchmark]: Toolchain (without parser) took 9009.08ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 80.6MB in the beginning and 135.7MB in the end (delta: -55.1MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-10-17 10:31:56,494 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:31:56,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.89ms. Allocated memory is still 100.7MB. Free memory was 80.3MB in the beginning and 65.9MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 10:31:56,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.01ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:31:56,495 INFO L158 Benchmark]: Boogie Preprocessor took 29.31ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 62.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:31:56,495 INFO L158 Benchmark]: RCFGBuilder took 509.91ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 49.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 10:31:56,496 INFO L158 Benchmark]: TraceAbstraction took 7692.92ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 48.2MB in the beginning and 138.8MB in the end (delta: -90.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:31:56,496 INFO L158 Benchmark]: Witness Printer took 51.02ms. Allocated memory is still 184.5MB. Free memory was 138.8MB in the beginning and 135.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:31:56,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 58.7MB in the beginning and 58.6MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.89ms. Allocated memory is still 100.7MB. Free memory was 80.3MB in the beginning and 65.9MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.01ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.31ms. Allocated memory is still 100.7MB. Free memory was 63.8MB in the beginning and 62.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 509.91ms. Allocated memory is still 100.7MB. Free memory was 62.4MB in the beginning and 49.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7692.92ms. Allocated memory was 100.7MB in the beginning and 184.5MB in the end (delta: 83.9MB). Free memory was 48.2MB in the beginning and 138.8MB in the end (delta: -90.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 51.02ms. Allocated memory is still 184.5MB. Free memory was 138.8MB in the beginning and 135.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 504 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 504 mSDsluCounter, 910 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 828 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 219 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=788occurred in iteration=7, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 649 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 2518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 10:31:56,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f78fd9e-dbed-4e6f-8578-2f49f85535f6/bin/uautomizer-J5u9QxTXDZ/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