./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:21:35,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:21:35,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:21:35,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:21:35,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:21:35,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:21:35,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:21:35,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:21:35,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:21:35,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:21:35,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:21:35,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:21:35,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:21:35,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:21:35,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:21:35,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:21:35,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:21:35,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:21:35,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:21:35,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:21:35,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:21:35,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:21:35,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:21:35,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:21:35,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:21:35,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:21:35,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:21:35,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:21:35,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:21:35,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:21:35,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:21:35,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:21:35,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:21:35,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:21:35,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:21:35,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:21:35,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:21:35,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:21:35,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:21:35,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:21:35,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:21:35,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:21:35,243 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:21:35,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:21:35,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:21:35,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:21:35,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:21:35,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:21:35,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:21:35,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:21:35,247 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:21:35,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:21:35,248 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:21:35,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:21:35,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:21:35,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:21:35,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:21:35,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:21:35,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:21:35,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:21:35,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:21:35,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:21:35,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:21:35,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:21:35,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:21:35,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:21:35,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:35,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:21:35,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:21:35,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:21:35,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:21:35,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:21:35,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:21:35,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:21:35,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:21:35,255 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_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 [2022-10-17 10:21:35,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:21:35,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:21:35,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:21:35,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:21:35,569 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:21:35,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2022-10-17 10:21:35,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/data/9fc914fc7/3af986032d804995b23e742c848acba3/FLAGb33a77eae [2022-10-17 10:21:36,096 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:21:36,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2022-10-17 10:21:36,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/data/9fc914fc7/3af986032d804995b23e742c848acba3/FLAGb33a77eae [2022-10-17 10:21:36,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/data/9fc914fc7/3af986032d804995b23e742c848acba3 [2022-10-17 10:21:36,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:21:36,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:21:36,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:36,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:21:36,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:21:36,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e284ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36, skipping insertion in model container [2022-10-17 10:21:36,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:21:36,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:21:36,796 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_2599786c-bacf-4147-9d15-bc3d001d1c9a/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-10-17 10:21:36,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:36,813 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:21:36,839 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_2599786c-bacf-4147-9d15-bc3d001d1c9a/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-10-17 10:21:36,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:36,859 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:21:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36 WrapperNode [2022-10-17 10:21:36,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:36,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:36,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:21:36,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:21:36,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,918 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 280 [2022-10-17 10:21:36,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:36,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:21:36,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:21:36,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:21:36,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,970 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:21:36,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:21:36,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:21:36,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:21:36,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (1/1) ... [2022-10-17 10:21:36,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:37,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:37,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:21:37,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:21:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:21:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:21:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:21:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:21:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:21:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:21:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:21:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:21:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:21:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:21:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:21:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:21:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:21:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:21:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:21:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:21:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:21:37,064 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:21:37,211 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:21:37,213 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:21:37,753 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:21:38,169 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:21:38,169 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 10:21:38,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:38 BoogieIcfgContainer [2022-10-17 10:21:38,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:21:38,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:21:38,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:21:38,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:21:38,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:21:36" (1/3) ... [2022-10-17 10:21:38,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494dc9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:38, skipping insertion in model container [2022-10-17 10:21:38,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:36" (2/3) ... [2022-10-17 10:21:38,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494dc9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:38, skipping insertion in model container [2022-10-17 10:21:38,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:38" (3/3) ... [2022-10-17 10:21:38,185 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2022-10-17 10:21:38,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:21:38,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:21:38,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:21:38,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:21:38,313 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:21:38,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 196 transitions, 416 flow [2022-10-17 10:21:38,510 INFO L130 PetriNetUnfolder]: 16/193 cut-off events. [2022-10-17 10:21:38,510 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:21:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 16/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-10-17 10:21:38,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 196 transitions, 416 flow [2022-10-17 10:21:38,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 182 transitions, 382 flow [2022-10-17 10:21:38,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:21:38,561 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b5dbd89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:21:38,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:21:38,629 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2022-10-17 10:21:38,630 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:21:38,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:38,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:38,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:21:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash 557862033, now seen corresponding path program 1 times [2022-10-17 10:21:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:38,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278381949] [2022-10-17 10:21:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:38,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:39,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:39,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278381949] [2022-10-17 10:21:39,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278381949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:39,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:39,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:21:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489028347] [2022-10-17 10:21:39,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:39,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:21:39,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:21:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:21:39,076 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 196 [2022-10-17 10:21:39,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 182 transitions, 382 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:39,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:39,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 196 [2022-10-17 10:21:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:39,187 INFO L130 PetriNetUnfolder]: 42/316 cut-off events. [2022-10-17 10:21:39,187 INFO L131 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2022-10-17 10:21:39,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 316 events. 42/316 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 802 event pairs, 15 based on Foata normal form. 42/325 useless extension candidates. Maximal degree in co-relation 229. Up to 59 conditions per place. [2022-10-17 10:21:39,193 INFO L137 encePairwiseOnDemand]: 185/196 looper letters, 9 selfloop transitions, 0 changer transitions 6/171 dead transitions. [2022-10-17 10:21:39,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 171 transitions, 378 flow [2022-10-17 10:21:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:21:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:21:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 370 transitions. [2022-10-17 10:21:39,209 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9438775510204082 [2022-10-17 10:21:39,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 370 transitions. [2022-10-17 10:21:39,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 370 transitions. [2022-10-17 10:21:39,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:39,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 370 transitions. [2022-10-17 10:21:39,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:39,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:39,227 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:39,229 INFO L175 Difference]: Start difference. First operand has 176 places, 182 transitions, 382 flow. Second operand 2 states and 370 transitions. [2022-10-17 10:21:39,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 171 transitions, 378 flow [2022-10-17 10:21:39,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 366 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:21:39,240 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 336 flow [2022-10-17 10:21:39,242 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=336, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2022-10-17 10:21:39,246 INFO L287 CegarLoopForPetriNet]: 176 programPoint places, -5 predicate places. [2022-10-17 10:21:39,246 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 336 flow [2022-10-17 10:21:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:39,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:39,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:21:39,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:21:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2054653840, now seen corresponding path program 1 times [2022-10-17 10:21:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:39,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691628444] [2022-10-17 10:21:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:39,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:40,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691628444] [2022-10-17 10:21:40,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691628444] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:40,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:40,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:21:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521889733] [2022-10-17 10:21:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:21:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:21:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:21:40,235 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 196 [2022-10-17 10:21:40,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:40,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:40,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 196 [2022-10-17 10:21:40,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:40,762 INFO L130 PetriNetUnfolder]: 298/789 cut-off events. [2022-10-17 10:21:40,763 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-10-17 10:21:40,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 789 events. 298/789 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3398 event pairs, 167 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 1286. Up to 438 conditions per place. [2022-10-17 10:21:40,775 INFO L137 encePairwiseOnDemand]: 181/196 looper letters, 62 selfloop transitions, 10 changer transitions 23/196 dead transitions. [2022-10-17 10:21:40,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 196 transitions, 588 flow [2022-10-17 10:21:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:21:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:21:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1008 transitions. [2022-10-17 10:21:40,784 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2022-10-17 10:21:40,785 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1008 transitions. [2022-10-17 10:21:40,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1008 transitions. [2022-10-17 10:21:40,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:40,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1008 transitions. [2022-10-17 10:21:40,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.0) internal successors, (1008), 8 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:40,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:40,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:40,800 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 336 flow. Second operand 8 states and 1008 transitions. [2022-10-17 10:21:40,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 196 transitions, 588 flow [2022-10-17 10:21:40,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 196 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:21:40,810 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 380 flow [2022-10-17 10:21:40,811 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=380, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2022-10-17 10:21:40,812 INFO L287 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2022-10-17 10:21:40,812 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 380 flow [2022-10-17 10:21:40,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:40,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:40,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:40,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:21:40,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:21:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:40,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1466577786, now seen corresponding path program 1 times [2022-10-17 10:21:40,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:40,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357159796] [2022-10-17 10:21:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:40,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:21:41,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:41,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357159796] [2022-10-17 10:21:41,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357159796] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:41,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667785266] [2022-10-17 10:21:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:41,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:41,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:41,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:21:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:41,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:21:41,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:21:41,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:21:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:21:41,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667785266] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:41,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:21:41,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-10-17 10:21:41,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676249364] [2022-10-17 10:21:41,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:41,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:21:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:21:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:21:41,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 196 [2022-10-17 10:21:41,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:41,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:41,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 196 [2022-10-17 10:21:41,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:42,201 INFO L130 PetriNetUnfolder]: 182/683 cut-off events. [2022-10-17 10:21:42,201 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-10-17 10:21:42,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 683 events. 182/683 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3320 event pairs, 80 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 1022. Up to 147 conditions per place. [2022-10-17 10:21:42,208 INFO L137 encePairwiseOnDemand]: 188/196 looper letters, 46 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-10-17 10:21:42,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 504 flow [2022-10-17 10:21:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:21:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:21:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2022-10-17 10:21:42,212 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7572886297376094 [2022-10-17 10:21:42,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2022-10-17 10:21:42,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2022-10-17 10:21:42,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:42,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2022-10-17 10:21:42,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:42,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:42,223 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:42,223 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 380 flow. Second operand 7 states and 1039 transitions. [2022-10-17 10:21:42,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 504 flow [2022-10-17 10:21:42,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 175 transitions, 480 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-10-17 10:21:42,230 INFO L231 Difference]: Finished difference. Result has 176 places, 169 transitions, 389 flow [2022-10-17 10:21:42,230 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=176, PETRI_TRANSITIONS=169} [2022-10-17 10:21:42,231 INFO L287 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2022-10-17 10:21:42,231 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 169 transitions, 389 flow [2022-10-17 10:21:42,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:42,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:42,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:42,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:42,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:42,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:21:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:42,460 INFO L85 PathProgramCache]: Analyzing trace with hash -84754530, now seen corresponding path program 1 times [2022-10-17 10:21:42,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:42,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028652947] [2022-10-17 10:21:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:42,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:21:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028652947] [2022-10-17 10:21:42,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028652947] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:42,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205695232] [2022-10-17 10:21:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:42,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:42,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:21:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:42,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:21:42,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:21:43,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:21:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:21:43,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205695232] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:43,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:21:43,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-10-17 10:21:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612805227] [2022-10-17 10:21:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:43,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:21:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:21:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:21:43,542 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 196 [2022-10-17 10:21:43,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 169 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 138.66666666666666) internal successors, (1248), 9 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:43,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:43,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 196 [2022-10-17 10:21:43,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:44,167 INFO L130 PetriNetUnfolder]: 782/1735 cut-off events. [2022-10-17 10:21:44,168 INFO L131 PetriNetUnfolder]: For 599/823 co-relation queries the response was YES. [2022-10-17 10:21:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 1735 events. 782/1735 cut-off events. For 599/823 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10265 event pairs, 133 based on Foata normal form. 224/1746 useless extension candidates. Maximal degree in co-relation 3350. Up to 406 conditions per place. [2022-10-17 10:21:44,188 INFO L137 encePairwiseOnDemand]: 183/196 looper letters, 89 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2022-10-17 10:21:44,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 222 transitions, 750 flow [2022-10-17 10:21:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:21:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:21:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1441 transitions. [2022-10-17 10:21:44,194 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.735204081632653 [2022-10-17 10:21:44,194 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1441 transitions. [2022-10-17 10:21:44,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1441 transitions. [2022-10-17 10:21:44,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:44,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1441 transitions. [2022-10-17 10:21:44,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.1) internal successors, (1441), 10 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:44,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:44,207 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:44,207 INFO L175 Difference]: Start difference. First operand has 176 places, 169 transitions, 389 flow. Second operand 10 states and 1441 transitions. [2022-10-17 10:21:44,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 222 transitions, 750 flow [2022-10-17 10:21:44,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 222 transitions, 738 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:21:44,215 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 489 flow [2022-10-17 10:21:44,216 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2022-10-17 10:21:44,217 INFO L287 CegarLoopForPetriNet]: 176 programPoint places, 10 predicate places. [2022-10-17 10:21:44,217 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 489 flow [2022-10-17 10:21:44,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 138.66666666666666) internal successors, (1248), 9 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:44,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:44,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:44,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:44,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:21:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -895989878, now seen corresponding path program 2 times [2022-10-17 10:21:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:44,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865539155] [2022-10-17 10:21:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:44,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:21:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:44,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865539155] [2022-10-17 10:21:44,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865539155] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:44,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916468943] [2022-10-17 10:21:44,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:21:44,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:44,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:44,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:21:44,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:21:44,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:21:44,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:21:44,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:21:45,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:21:45,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916468943] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:45,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:21:45,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-10-17 10:21:45,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665145166] [2022-10-17 10:21:45,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:45,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:21:45,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:45,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:21:45,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:21:45,165 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 196 [2022-10-17 10:21:45,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 489 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:45,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:45,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 196 [2022-10-17 10:21:45,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:45,698 INFO L130 PetriNetUnfolder]: 504/1149 cut-off events. [2022-10-17 10:21:45,698 INFO L131 PetriNetUnfolder]: For 991/1132 co-relation queries the response was YES. [2022-10-17 10:21:45,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1149 events. 504/1149 cut-off events. For 991/1132 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5777 event pairs, 136 based on Foata normal form. 161/1266 useless extension candidates. Maximal degree in co-relation 2797. Up to 421 conditions per place. [2022-10-17 10:21:45,716 INFO L137 encePairwiseOnDemand]: 187/196 looper letters, 56 selfloop transitions, 10 changer transitions 0/189 dead transitions. [2022-10-17 10:21:45,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 648 flow [2022-10-17 10:21:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:21:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:21:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1098 transitions. [2022-10-17 10:21:45,721 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7002551020408163 [2022-10-17 10:21:45,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1098 transitions. [2022-10-17 10:21:45,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1098 transitions. [2022-10-17 10:21:45,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:45,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1098 transitions. [2022-10-17 10:21:45,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:45,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:45,731 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:45,731 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 489 flow. Second operand 8 states and 1098 transitions. [2022-10-17 10:21:45,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 648 flow [2022-10-17 10:21:45,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 189 transitions, 641 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:21:45,747 INFO L231 Difference]: Finished difference. Result has 190 places, 181 transitions, 509 flow [2022-10-17 10:21:45,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=190, PETRI_TRANSITIONS=181} [2022-10-17 10:21:45,751 INFO L287 CegarLoopForPetriNet]: 176 programPoint places, 14 predicate places. [2022-10-17 10:21:45,751 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 181 transitions, 509 flow [2022-10-17 10:21:45,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:21:45,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:45,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:45,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:21:45,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:45,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:21:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2125791248, now seen corresponding path program 1 times [2022-10-17 10:21:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:45,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267567582] [2022-10-17 10:21:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267567582] [2022-10-17 10:21:53,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267567582] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:21:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470911081] [2022-10-17 10:21:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:53,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:21:53,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:53,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:21:53,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2599786c-bacf-4147-9d15-bc3d001d1c9a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:21:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:53,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 90 conjunts are in the unsatisfiable core [2022-10-17 10:21:53,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:21:56,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:21:56,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:21:56,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:21:57,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:21:57,681 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:21:57,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 85 [2022-10-17 10:21:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:58,181 INFO L328 TraceCheckSpWp]: Computing backward predicates...