./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2013-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2013-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-04 12:06:32,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-04 12:06:32,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-04 12:06:32,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-04 12:06:32,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-04 12:06:32,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-04 12:06:32,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-04 12:06:32,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-04 12:06:32,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-04 12:06:32,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-04 12:06:32,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-04 12:06:32,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-04 12:06:32,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-04 12:06:32,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-04 12:06:32,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-04 12:06:32,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-04 12:06:32,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-04 12:06:32,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-04 12:06:32,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-04 12:06:32,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-04 12:06:32,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-04 12:06:32,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-04 12:06:32,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-04 12:06:32,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-04 12:06:32,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-04 12:06:32,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-04 12:06:32,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-04 12:06:32,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-04 12:06:32,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-04 12:06:32,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-04 12:06:32,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-04 12:06:32,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-04 12:06:32,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-04 12:06:32,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-04 12:06:32,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-04 12:06:32,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-04 12:06:32,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-04 12:06:32,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-04 12:06:32,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-04 12:06:32,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-04 12:06:32,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-04 12:06:32,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-11-04 12:06:32,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-04 12:06:32,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-04 12:06:32,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-04 12:06:32,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-04 12:06:32,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-04 12:06:32,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-04 12:06:32,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-04 12:06:32,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-04 12:06:32,252 INFO L138 SettingsManager]: * Use SBE=true [2022-11-04 12:06:32,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-04 12:06:32,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-04 12:06:32,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-04 12:06:32,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-04 12:06:32,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-04 12:06:32,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-04 12:06:32,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-04 12:06:32,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-04 12:06:32,255 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-04 12:06:32,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-04 12:06:32,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-04 12:06:32,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-04 12:06:32,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-04 12:06:32,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-04 12:06:32,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-11-04 12:06:32,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-04 12:06:32,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-04 12:06:32,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-04 12:06:32,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-04 12:06:32,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-04 12:06:32,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-04 12:06:32,258 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-11-04 12:06:32,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-04 12:06:32,259 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-04 12:06:32,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-11-04 12:06:32,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-04 12:06:32,259 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-11-04 12:06:32,259 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-11-04 12:06:32,260 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_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 [2022-11-04 12:06:32,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-04 12:06:32,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-04 12:06:32,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-04 12:06:32,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-04 12:06:32,648 INFO L275 PluginConnector]: CDTParser initialized [2022-11-04 12:06:32,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/../../sv-benchmarks/c/pthread-lit/fkp2013-1.i [2022-11-04 12:06:32,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/data/56b3bbf58/c13522663ace4c6b9974dd935814636a/FLAGa831faa02 [2022-11-04 12:06:33,282 INFO L306 CDTParser]: Found 1 translation units. [2022-11-04 12:06:33,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/sv-benchmarks/c/pthread-lit/fkp2013-1.i [2022-11-04 12:06:33,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/data/56b3bbf58/c13522663ace4c6b9974dd935814636a/FLAGa831faa02 [2022-11-04 12:06:33,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/data/56b3bbf58/c13522663ace4c6b9974dd935814636a [2022-11-04 12:06:33,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-04 12:06:33,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-04 12:06:33,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-04 12:06:33,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-04 12:06:33,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-04 12:06:33,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:06:33" (1/1) ... [2022-11-04 12:06:33,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c300a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:33, skipping insertion in model container [2022-11-04 12:06:33,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:06:33" (1/1) ... [2022-11-04 12:06:33,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-04 12:06:33,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-04 12:06:34,120 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_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/sv-benchmarks/c/pthread-lit/fkp2013-1.i[30003,30016] [2022-11-04 12:06:34,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-04 12:06:34,148 INFO L203 MainTranslator]: Completed pre-run [2022-11-04 12:06:34,192 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_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/sv-benchmarks/c/pthread-lit/fkp2013-1.i[30003,30016] [2022-11-04 12:06:34,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-04 12:06:34,246 INFO L208 MainTranslator]: Completed translation [2022-11-04 12:06:34,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34 WrapperNode [2022-11-04 12:06:34,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-04 12:06:34,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-04 12:06:34,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-04 12:06:34,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-04 12:06:34,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,322 INFO L138 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-11-04 12:06:34,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-04 12:06:34,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-04 12:06:34,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-04 12:06:34,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-04 12:06:34,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-04 12:06:34,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-04 12:06:34,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-04 12:06:34,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-04 12:06:34,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (1/1) ... [2022-11-04 12:06:34,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-04 12:06:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:34,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:34,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-04 12:06:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-04 12:06:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-04 12:06:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-04 12:06:34,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-04 12:06:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-04 12:06:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-04 12:06:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-04 12:06:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-04 12:06:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-04 12:06:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-04 12:06:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-04 12:06:34,470 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-04 12:06:34,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-04 12:06:34,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-04 12:06:34,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-04 12:06:34,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-04 12:06:34,808 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-04 12:06:34,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:06:34 BoogieIcfgContainer [2022-11-04 12:06:34,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-04 12:06:34,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-04 12:06:34,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-04 12:06:34,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-04 12:06:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 12:06:33" (1/3) ... [2022-11-04 12:06:34,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518bbb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:06:34, skipping insertion in model container [2022-11-04 12:06:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:06:34" (2/3) ... [2022-11-04 12:06:34,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518bbb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:06:34, skipping insertion in model container [2022-11-04 12:06:34,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:06:34" (3/3) ... [2022-11-04 12:06:34,821 INFO L112 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2022-11-04 12:06:34,830 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-04 12:06:34,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-04 12:06:34,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-04 12:06:34,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-04 12:06:34,902 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:06:34,975 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:34,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-11-04 12:06:35,028 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:35,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ======== [2022-11-04 12:06:35,076 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:35,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:06:35,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:35,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash 702214347, now seen corresponding path program 1 times [2022-11-04 12:06:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052689936] [2022-11-04 12:06:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:35,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052689936] [2022-11-04 12:06:35,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052689936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:35,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:35,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:06:35,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053355931] [2022-11-04 12:06:35,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:06:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:06:35,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:06:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:35,749 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:35,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:35,751 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:35,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-04 12:06:35,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 402150417, now seen corresponding path program 1 times [2022-11-04 12:06:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:35,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635473054] [2022-11-04 12:06:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:36,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:36,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635473054] [2022-11-04 12:06:36,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635473054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:36,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:36,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-04 12:06:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871296207] [2022-11-04 12:06:36,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:36,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-04 12:06:36,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:36,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-04 12:06:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-04 12:06:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:36,266 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:36,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:36,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:36,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-04 12:06:36,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:06:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-04 12:06:36,397 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-04 12:06:36,398 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/2) [2022-11-04 12:06:36,420 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:36,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:36,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:36,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:36,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-11-04 12:06:36,460 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:36,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:06:36,461 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:36,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:06:36,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:06:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:36,531 INFO L85 PathProgramCache]: Analyzing trace with hash -753021586, now seen corresponding path program 1 times [2022-11-04 12:06:36,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:36,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274329] [2022-11-04 12:06:36,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-04 12:06:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:36,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274329] [2022-11-04 12:06:36,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:36,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:36,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:06:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705695086] [2022-11-04 12:06:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:06:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:06:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:06:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:36,743 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:36,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:36,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:36,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-04 12:06:36,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:06:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1862160720, now seen corresponding path program 1 times [2022-11-04 12:06:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:36,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13867681] [2022-11-04 12:06:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:06:36,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:06:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:06:36,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:06:36,893 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:06:36,894 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-04 12:06:36,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-04 12:06:36,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-04 12:06:36,907 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-04 12:06:36,909 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2022-11-04 12:06:36,910 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-04 12:06:36,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-04 12:06:36,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:06:36,956 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:36,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:36,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:36,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:36,969 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:36,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:06:36,971 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:36,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:06:36,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-11-04 12:06:37,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:06:37,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash 738405503, now seen corresponding path program 1 times [2022-11-04 12:06:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:37,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414599638] [2022-11-04 12:06:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:37,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-04 12:06:37,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:37,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414599638] [2022-11-04 12:06:37,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414599638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:37,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:37,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:06:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194417317] [2022-11-04 12:06:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:37,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:06:37,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:37,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:06:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:06:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:37,380 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:37,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:37,382 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-04 12:06:37,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:06:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1593153921, now seen corresponding path program 1 times [2022-11-04 12:06:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:37,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093917346] [2022-11-04 12:06:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:06:37,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:06:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:06:37,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:06:37,520 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:06:37,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-04 12:06:37,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-04 12:06:37,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-04 12:06:37,522 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-04 12:06:37,523 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/3) [2022-11-04 12:06:37,523 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-04 12:06:37,523 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-04 12:06:37,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:06:37,554 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:37,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:37,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:37,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:37,566 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:37,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork1 ======== [2022-11-04 12:06:37,567 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:37,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:06:37,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:06:37,575 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:06:37,575 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork1 was SAFE (1/4) [2022-11-04 12:06:37,580 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:37,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:37,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:37,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-11-04 12:06:37,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:37,593 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:37,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-11-04 12:06:37,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:06:37,594 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:37,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:06:37,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:06:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1696668505, now seen corresponding path program 1 times [2022-11-04 12:06:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:37,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010867567] [2022-11-04 12:06:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-04 12:06:37,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:37,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010867567] [2022-11-04 12:06:37,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010867567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:37,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:37,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:06:37,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052281321] [2022-11-04 12:06:37,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:37,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:06:37,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:37,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:06:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:06:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:37,986 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:37,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:37,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:38,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-04 12:06:38,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:06:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1609778491, now seen corresponding path program 1 times [2022-11-04 12:06:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351504149] [2022-11-04 12:06:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:06:38,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:06:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:06:38,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:06:38,121 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:06:38,121 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-04 12:06:38,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-04 12:06:38,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-04 12:06:38,123 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-04 12:06:38,124 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/4) [2022-11-04 12:06:38,124 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-04 12:06:38,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-04 12:06:38,173 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:06:38,179 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:38,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:38,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:38,194 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:38,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork1 ======== [2022-11-04 12:06:38,195 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:06:38,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:06:38,199 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:06:38,199 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread3of4ForFork1 was SAFE (1/5) [2022-11-04 12:06:38,201 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:38,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:38,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-11-04 12:06:38,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:38,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2022-11-04 12:06:38,212 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:38,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread4of4ForFork1 ======== [2022-11-04 12:06:38,213 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:06:38,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:06:38,216 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:06:38,217 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread4of4ForFork1 was SAFE (2/5) [2022-11-04 12:06:38,223 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:38,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:38,229 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:38,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of4ForFork1 ======== [2022-11-04 12:06:38,230 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:06:38,233 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:06:38,234 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:06:38,234 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread2of4ForFork1 was SAFE (3/5) [2022-11-04 12:06:38,236 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:06:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:38,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-11-04 12:06:38,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:06:38,248 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:06:38,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of4ForFork1 ======== [2022-11-04 12:06:38,248 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:06:38,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:06:38,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-11-04 12:06:38,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2005294478, now seen corresponding path program 1 times [2022-11-04 12:06:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:38,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092270347] [2022-11-04 12:06:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:38,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:38,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092270347] [2022-11-04 12:06:38,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092270347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:38,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:38,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:06:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613945121] [2022-11-04 12:06:38,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:06:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:06:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:06:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:38,397 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:38,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:38,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:38,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-04 12:06:38,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1251918751, now seen corresponding path program 1 times [2022-11-04 12:06:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:38,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238052086] [2022-11-04 12:06:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:38,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238052086] [2022-11-04 12:06:38,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238052086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:06:38,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:06:38,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-04 12:06:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856469934] [2022-11-04 12:06:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:06:38,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-04 12:06:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-04 12:06:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-04 12:06:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:38,602 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:38,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:38,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:38,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:38,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-04 12:06:38,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:38,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1858926713, now seen corresponding path program 1 times [2022-11-04 12:06:38,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:38,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226436521] [2022-11-04 12:06:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:38,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:38,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226436521] [2022-11-04 12:06:38,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226436521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:06:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371590507] [2022-11-04 12:06:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:38,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:38,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:38,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:06:38,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-04 12:06:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:39,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-04 12:06:39,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:06:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:39,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:06:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:39,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371590507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:06:39,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:06:39,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-04 12:06:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500719003] [2022-11-04 12:06:39,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:06:39,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-04 12:06:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-04 12:06:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-04 12:06:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:39,352 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:39,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:39,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:39,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:06:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-04 12:06:39,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-04 12:06:39,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1289829198, now seen corresponding path program 1 times [2022-11-04 12:06:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:39,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705753993] [2022-11-04 12:06:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:40,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705753993] [2022-11-04 12:06:40,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705753993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:06:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446405851] [2022-11-04 12:06:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:40,004 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:06:40,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-04 12:06:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:40,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-04 12:06:40,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:06:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:40,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:06:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:40,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446405851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:06:40,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:06:40,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-04 12:06:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168066568] [2022-11-04 12:06:40,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:06:40,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-04 12:06:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-04 12:06:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-04 12:06:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:40,502 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:40,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:40,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:40,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:40,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:06:40,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:06:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:06:40,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-04 12:06:40,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:40,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1836086710, now seen corresponding path program 1 times [2022-11-04 12:06:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797208114] [2022-11-04 12:06:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:41,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:41,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797208114] [2022-11-04 12:06:41,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797208114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:06:41,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912173579] [2022-11-04 12:06:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:41,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:41,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:41,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:06:41,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-04 12:06:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:41,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-04 12:06:41,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:06:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:41,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:06:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:06:41,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912173579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:06:41,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:06:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-04 12:06:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559032843] [2022-11-04 12:06:41,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:06:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-04 12:06:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-04 12:06:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-04 12:06:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:41,896 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:41,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:41,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:41,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:41,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:06:41,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:06:41,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-04 12:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-04 12:06:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:06:44,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-04 12:06:44,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:44,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:06:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:06:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1790604340, now seen corresponding path program 1 times [2022-11-04 12:06:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:06:44,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080236527] [2022-11-04 12:06:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:44,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:06:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-04 12:06:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:06:45,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080236527] [2022-11-04 12:06:45,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080236527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:06:45,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131170700] [2022-11-04 12:06:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:06:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:06:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:06:45,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:06:45,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-04 12:06:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:06:45,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-04 12:06:45,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:06:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-04 12:06:45,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:06:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-04 12:06:45,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131170700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:06:45,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:06:45,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-04 12:06:45,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717098868] [2022-11-04 12:06:45,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:06:45,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-04 12:06:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:06:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-04 12:06:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-04 12:06:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:06:45,710 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:06:45,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.3076923076923075) internal successors, (138), 26 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:06:45,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:06:45,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:06:45,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-11-04 12:06:45,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-11-04 12:06:45,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-11-04 12:06:45,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-04 12:07:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-04 12:07:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-04 12:07:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-04 12:07:00,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-04 12:07:00,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -231414900, now seen corresponding path program 1 times [2022-11-04 12:07:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:00,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401757680] [2022-11-04 12:07:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:00,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-04 12:07:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401757680] [2022-11-04 12:07:00,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401757680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:00,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542668613] [2022-11-04 12:07:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:00,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:00,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:00,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:00,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-04 12:07:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:00,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-04 12:07:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-04 12:07:01,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-04 12:07:01,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542668613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:01,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:01,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-04 12:07:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886897352] [2022-11-04 12:07:01,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:01,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-04 12:07:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-04 12:07:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-04 12:07:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:01,328 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:01,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.0) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:01,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:01,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:01,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-11-04 12:07:01,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-11-04 12:07:01,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 96 states. [2022-11-04 12:07:01,329 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 83 states. [2022-11-04 12:07:01,330 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-04 12:07:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-04 12:07:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-11-04 12:07:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-11-04 12:07:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-11-04 12:07:21,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:21,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-04 12:07:21,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash 79651788, now seen corresponding path program 1 times [2022-11-04 12:07:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116728045] [2022-11-04 12:07:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-04 12:07:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116728045] [2022-11-04 12:07:21,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116728045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651697824] [2022-11-04 12:07:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:21,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:21,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:21,970 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:21,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-04 12:07:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:22,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-04 12:07:22,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-04 12:07:22,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-04 12:07:22,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651697824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:22,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:22,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-04 12:07:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294493898] [2022-11-04 12:07:22,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:22,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-04 12:07:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-04 12:07:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-04 12:07:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:22,491 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.115384615384615) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:22,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:22,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:22,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-11-04 12:07:22,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 55 states. [2022-11-04 12:07:22,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 134 states. [2022-11-04 12:07:22,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 138 states. [2022-11-04 12:07:22,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 138 states. [2022-11-04 12:07:22,493 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-11-04 12:07:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-11-04 12:07:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-11-04 12:07:47,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:47,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:47,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-04 12:07:47,535 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-04 12:07:47,536 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of4ForFork1 was SAFE (4/5) [2022-11-04 12:07:47,538 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:47,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:47,540 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:47,549 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:47,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:07:47,550 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:07:47,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (17)] Waiting until timeout for monitored process [2022-11-04 12:07:47,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash 46987516, now seen corresponding path program 1 times [2022-11-04 12:07:47,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:47,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472092956] [2022-11-04 12:07:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-04 12:07:47,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:47,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472092956] [2022-11-04 12:07:47,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472092956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:47,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:47,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:07:47,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028367342] [2022-11-04 12:07:47,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:07:47,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:47,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:07:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:07:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:47,799 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:47,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:47,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-04 12:07:47,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1628556418, now seen corresponding path program 1 times [2022-11-04 12:07:47,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:47,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284842050] [2022-11-04 12:07:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:07:47,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:07:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:07:47,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:07:47,921 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:07:47,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-04 12:07:47,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-04 12:07:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-04 12:07:47,923 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-04 12:07:47,924 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (5/5) [2022-11-04 12:07:47,924 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-04 12:07:47,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-04 12:07:47,956 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:07:47,959 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:47,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:47,961 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:47,964 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:47,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of5ForFork1 ======== [2022-11-04 12:07:47,965 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:07:47,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:47,968 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:07:47,969 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread2of5ForFork1 was SAFE (1/6) [2022-11-04 12:07:47,971 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:47,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:47,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (18)] Waiting until timeout for monitored process [2022-11-04 12:07:47,975 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:47,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2022-11-04 12:07:47,985 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:47,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread5of5ForFork1 ======== [2022-11-04 12:07:47,986 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:07:47,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:47,988 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:07:47,989 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread5of5ForFork1 was SAFE (2/6) [2022-11-04 12:07:47,994 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:47,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:47,997 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:48,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2022-11-04 12:07:48,008 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:48,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-11-04 12:07:48,010 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-04 12:07:48,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1881465780, now seen corresponding path program 1 times [2022-11-04 12:07:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:48,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277110511] [2022-11-04 12:07:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-04 12:07:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277110511] [2022-11-04 12:07:48,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277110511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:48,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:48,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:07:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740283563] [2022-11-04 12:07:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:48,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:07:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:07:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:07:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:48,292 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:48,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:48,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-04 12:07:48,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-04 12:07:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash -32319210, now seen corresponding path program 1 times [2022-11-04 12:07:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651903639] [2022-11-04 12:07:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:07:48,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-04 12:07:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-04 12:07:48,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-04 12:07:48,425 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-04 12:07:48,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2022-11-04 12:07:48,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-04 12:07:48,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-04 12:07:48,431 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-04 12:07:48,432 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/6) [2022-11-04 12:07:48,432 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-04 12:07:48,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-04 12:07:48,464 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-04 12:07:48,466 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:48,474 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:48,477 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:48,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of6ForFork1 ======== [2022-11-04 12:07:48,478 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:07:48,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:48,480 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:07:48,481 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread2of6ForFork1 was SAFE (1/7) [2022-11-04 12:07:48,483 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:48,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2022-11-04 12:07:48,488 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:48,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2022-11-04 12:07:48,491 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:48,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread5of6ForFork1 ======== [2022-11-04 12:07:48,491 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:07:48,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:48,493 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:07:48,494 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread5of6ForFork1 was SAFE (2/7) [2022-11-04 12:07:48,497 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:48,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:48,499 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:48,510 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:48,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of6ForFork1 ======== [2022-11-04 12:07:48,510 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:07:48,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-04 12:07:48,513 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-11-04 12:07:48,513 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread3of6ForFork1 was SAFE (3/7) [2022-11-04 12:07:48,515 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-11-04 12:07:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:48,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (23)] Waiting until timeout for monitored process [2022-11-04 12:07:48,518 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-11-04 12:07:48,527 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-11-04 12:07:48,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of6ForFork1 ======== [2022-11-04 12:07:48,528 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=PARTIAL_ORDER_FA, 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;@325a7705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-04 12:07:48,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-04 12:07:48,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2022-11-04 12:07:48,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash -305195212, now seen corresponding path program 1 times [2022-11-04 12:07:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:48,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827455106] [2022-11-04 12:07:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:48,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:48,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827455106] [2022-11-04 12:07:48,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827455106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:48,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:48,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-04 12:07:48,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674838189] [2022-11-04 12:07:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:48,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-04 12:07:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-04 12:07:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-04 12:07:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:48,648 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:48,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:48,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:48,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-04 12:07:48,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1251492677, now seen corresponding path program 1 times [2022-11-04 12:07:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:48,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524419909] [2022-11-04 12:07:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:48,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:48,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524419909] [2022-11-04 12:07:48,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524419909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-04 12:07:48,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-04 12:07:48,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-04 12:07:48,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501277744] [2022-11-04 12:07:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-04 12:07:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-04 12:07:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-04 12:07:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-04 12:07:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:48,791 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:48,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:48,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:48,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-04 12:07:48,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash 669854319, now seen corresponding path program 1 times [2022-11-04 12:07:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:48,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354367480] [2022-11-04 12:07:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:48,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:48,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354367480] [2022-11-04 12:07:48,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354367480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:48,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076416000] [2022-11-04 12:07:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:48,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:48,994 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:49,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-04 12:07:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:49,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-04 12:07:49,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:49,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:49,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076416000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:49,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:49,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-04 12:07:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123036622] [2022-11-04 12:07:49,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:49,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-04 12:07:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-04 12:07:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-04 12:07:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:49,369 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:49,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:49,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:49,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:49,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:49,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:49,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:49,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash 394693890, now seen corresponding path program 1 times [2022-11-04 12:07:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:49,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685504859] [2022-11-04 12:07:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:49,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:49,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685504859] [2022-11-04 12:07:49,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685504859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:49,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272253142] [2022-11-04 12:07:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:49,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:49,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:49,887 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:49,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-04 12:07:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:50,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-04 12:07:50,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:50,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:50,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272253142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:50,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:50,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-04 12:07:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747405063] [2022-11-04 12:07:50,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:50,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-04 12:07:50,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-04 12:07:50,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-04 12:07:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:50,523 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:50,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:50,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:50,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:50,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:50,524 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:07:50,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:50,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash -933094028, now seen corresponding path program 1 times [2022-11-04 12:07:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:50,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806393470] [2022-11-04 12:07:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:51,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:51,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806393470] [2022-11-04 12:07:51,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806393470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:51,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999844617] [2022-11-04 12:07:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:51,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:51,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:51,172 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:51,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-04 12:07:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:51,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-04 12:07:51,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:51,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:51,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999844617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:51,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:51,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-04 12:07:51,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631987190] [2022-11-04 12:07:51,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-04 12:07:51,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-04 12:07:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-04 12:07:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:51,757 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:51,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:51,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:51,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:51,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:51,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:07:51,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:07:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-04 12:07:52,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-04 12:07:52,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1047249093, now seen corresponding path program 1 times [2022-11-04 12:07:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:52,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523009955] [2022-11-04 12:07:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:52,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:52,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523009955] [2022-11-04 12:07:52,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523009955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:52,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223822395] [2022-11-04 12:07:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:52,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:52,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:52,543 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:52,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-04 12:07:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:52,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-04 12:07:52,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:52,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:53,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223822395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:53,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:53,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2022-11-04 12:07:53,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411800139] [2022-11-04 12:07:53,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:53,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-04 12:07:53,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-04 12:07:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-11-04 12:07:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:53,216 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.133333333333334) internal successors, (214), 30 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:53,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:53,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:53,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:53,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:07:53,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-04 12:07:53,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:07:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-04 12:07:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-04 12:07:53,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-04 12:07:53,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-04 12:07:53,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-04 12:07:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-04 12:07:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -638914443, now seen corresponding path program 1 times [2022-11-04 12:07:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-04 12:07:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901820152] [2022-11-04 12:07:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-04 12:07:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-04 12:07:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901820152] [2022-11-04 12:07:54,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901820152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-04 12:07:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331996868] [2022-11-04 12:07:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-04 12:07:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-04 12:07:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 [2022-11-04 12:07:54,086 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-04 12:07:54,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67c0a238-710e-4cc0-9577-45ffdfb7bd9a/bin/ugemcutter-C1kR7RIaUi/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-04 12:07:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-04 12:07:54,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-04 12:07:54,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-04 12:07:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:54,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-04 12:07:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-04 12:07:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331996868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-04 12:07:54,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-04 12:07:54,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-04 12:07:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364864121] [2022-11-04 12:07:54,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-04 12:07:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-04 12:07:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-04 12:07:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-04 12:07:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2022-11-04 12:07:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-04 12:07:54,902 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-11-04 12:07:54,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.235294117647059) internal successors, (246), 34 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-04 12:07:54,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-11-04 12:07:54,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-11-04 12:07:54,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-11-04 12:07:54,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-11-04 12:07:54,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2022-11-04 12:07:54,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-11-04 12:07:54,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.