./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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-b5237d8 [2022-11-21 13:52:17,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:52:17,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:52:17,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:52:17,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:52:17,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:52:17,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:52:17,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:52:17,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:52:17,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:52:17,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:52:17,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:52:17,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:52:17,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:52:17,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:52:17,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:52:17,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:52:17,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:52:17,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:52:17,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:52:17,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:52:17,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:52:17,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:52:17,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:52:17,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:52:17,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:52:17,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:52:17,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:52:17,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:52:17,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:52:17,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:52:17,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:52:17,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:52:17,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:52:17,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:52:17,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:52:17,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:52:17,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:52:17,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:52:17,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:52:17,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:52:17,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 13:52:17,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:52:17,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:52:17,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:52:17,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:52:17,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:52:17,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:52:17,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:52:17,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:52:17,338 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:52:17,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:52:17,340 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:52:17,340 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:52:17,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:52:17,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:52:17,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:52:17,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:52:17,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:52:17,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:52:17,341 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 13:52:17,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:52:17,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:52:17,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:52:17,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:52:17,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:52:17,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:52:17,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:52:17,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:52:17,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:52:17,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:52:17,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:52:17,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:52:17,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:52:17,345 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:52:17,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:52:17,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:52:17,345 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_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-21 13:52:17,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:52:17,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:52:17,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:52:17,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:52:17,705 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:52:17,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-21 13:52:20,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:52:21,169 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:52:21,170 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-21 13:52:21,179 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/data/b600e47c2/b657e00159924d45b3b4d8d9807d932e/FLAGa7b5924b6 [2022-11-21 13:52:21,205 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/data/b600e47c2/b657e00159924d45b3b4d8d9807d932e [2022-11-21 13:52:21,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:52:21,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:52:21,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:52:21,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:52:21,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:52:21,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d763a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21, skipping insertion in model container [2022-11-21 13:52:21,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:52:21,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:52:21,521 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-21 13:52:21,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:52:21,537 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:52:21,564 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-21 13:52:21,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:52:21,583 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:52:21,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21 WrapperNode [2022-11-21 13:52:21,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:52:21,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:52:21,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:52:21,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:52:21,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,643 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2022-11-21 13:52:21,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:52:21,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:52:21,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:52:21,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:52:21,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:52:21,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:52:21,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:52:21,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:52:21,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (1/1) ... [2022-11-21 13:52:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:52:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:21,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:52:21,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:52:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:52:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:52:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:52:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:52:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:52:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:52:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:52:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:52:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 13:52:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 13:52:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:52:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 13:52:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 13:52:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:52:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:52:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:52:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:52:21,784 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:52:21,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:52:21,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:52:22,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:52:22,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:52:22,402 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 13:52:22,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:52:22 BoogieIcfgContainer [2022-11-21 13:52:22,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:52:22,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:52:22,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:52:22,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:52:22,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:52:21" (1/3) ... [2022-11-21 13:52:22,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:52:22, skipping insertion in model container [2022-11-21 13:52:22,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:52:21" (2/3) ... [2022-11-21 13:52:22,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:52:22, skipping insertion in model container [2022-11-21 13:52:22,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:52:22" (3/3) ... [2022-11-21 13:52:22,415 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-21 13:52:22,424 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:52:22,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:52:22,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 13:52:22,436 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:52:22,532 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 13:52:22,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 398 flow [2022-11-21 13:52:22,707 INFO L130 PetriNetUnfolder]: 12/184 cut-off events. [2022-11-21 13:52:22,707 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:52:22,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-21 13:52:22,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 398 flow [2022-11-21 13:52:22,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 160 transitions, 332 flow [2022-11-21 13:52:22,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:52:22,756 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;@f0a3b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:52:22,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 13:52:22,785 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2022-11-21 13:52:22,786 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:52:22,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:22,787 INFO L209 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] [2022-11-21 13:52:22,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:22,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 392499776, now seen corresponding path program 1 times [2022-11-21 13:52:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:22,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712018773] [2022-11-21 13:52:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:23,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:23,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712018773] [2022-11-21 13:52:23,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712018773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:23,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:52:23,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:52:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280510864] [2022-11-21 13:52:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:23,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:52:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:52:23,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:52:23,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-21 13:52:23,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 160 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2022-11-21 13:52:23,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:23,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-21 13:52:23,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:23,836 INFO L130 PetriNetUnfolder]: 63/517 cut-off events. [2022-11-21 13:52:23,837 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-21 13:52:23,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 517 events. 63/517 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2403 event pairs, 40 based on Foata normal form. 29/458 useless extension candidates. Maximal degree in co-relation 391. Up to 57 conditions per place. [2022-11-21 13:52:23,849 INFO L137 encePairwiseOnDemand]: 174/187 looper letters, 32 selfloop transitions, 4 changer transitions 4/169 dead transitions. [2022-11-21 13:52:23,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 169 transitions, 434 flow [2022-11-21 13:52:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:52:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:52:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2022-11-21 13:52:23,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866310160427807 [2022-11-21 13:52:23,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2022-11-21 13:52:23,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2022-11-21 13:52:23,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:23,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2022-11-21 13:52:23,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 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) [2022-11-21 13:52:23,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-21 13:52:23,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-21 13:52:23,898 INFO L175 Difference]: Start difference. First operand has 159 places, 160 transitions, 332 flow. Second operand 5 states and 829 transitions. [2022-11-21 13:52:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 169 transitions, 434 flow [2022-11-21 13:52:23,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 169 transitions, 422 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 13:52:23,908 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 334 flow [2022-11-21 13:52:23,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-11-21 13:52:23,914 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-21 13:52:23,915 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 334 flow [2022-11-21 13:52:23,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2022-11-21 13:52:23,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:23,916 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:23,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:52:23,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:23,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1027812931, now seen corresponding path program 1 times [2022-11-21 13:52:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:23,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708815940] [2022-11-21 13:52:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:24,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:24,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708815940] [2022-11-21 13:52:24,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708815940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:24,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534819616] [2022-11-21 13:52:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:24,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:24,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:24,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:24,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:52:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:24,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:52:24,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:24,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:24,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534819616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:24,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:24,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 13:52:24,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52338848] [2022-11-21 13:52:24,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:52:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:52:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:52:24,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-21 13:52:24,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 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) [2022-11-21 13:52:24,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:24,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-21 13:52:24,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:25,213 INFO L130 PetriNetUnfolder]: 156/1183 cut-off events. [2022-11-21 13:52:25,213 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-21 13:52:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 1183 events. 156/1183 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7459 event pairs, 100 based on Foata normal form. 3/985 useless extension candidates. Maximal degree in co-relation 1224. Up to 70 conditions per place. [2022-11-21 13:52:25,223 INFO L137 encePairwiseOnDemand]: 180/187 looper letters, 68 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2022-11-21 13:52:25,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 215 transitions, 678 flow [2022-11-21 13:52:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:52:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 13:52:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2897 transitions. [2022-11-21 13:52:25,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606654783125371 [2022-11-21 13:52:25,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2897 transitions. [2022-11-21 13:52:25,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2897 transitions. [2022-11-21 13:52:25,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:25,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2897 transitions. [2022-11-21 13:52:25,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 160.94444444444446) internal successors, (2897), 18 states have internal predecessors, (2897), 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) [2022-11-21 13:52:25,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 187.0) internal successors, (3553), 19 states have internal predecessors, (3553), 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) [2022-11-21 13:52:25,253 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 187.0) internal successors, (3553), 19 states have internal predecessors, (3553), 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) [2022-11-21 13:52:25,253 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 334 flow. Second operand 18 states and 2897 transitions. [2022-11-21 13:52:25,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 215 transitions, 678 flow [2022-11-21 13:52:25,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 215 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:52:25,263 INFO L231 Difference]: Finished difference. Result has 178 places, 164 transitions, 438 flow [2022-11-21 13:52:25,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=438, PETRI_PLACES=178, PETRI_TRANSITIONS=164} [2022-11-21 13:52:25,264 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 19 predicate places. [2022-11-21 13:52:25,265 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 164 transitions, 438 flow [2022-11-21 13:52:25,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 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) [2022-11-21 13:52:25,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:25,268 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:25,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:25,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:25,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1797429457, now seen corresponding path program 1 times [2022-11-21 13:52:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:25,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866912895] [2022-11-21 13:52:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:25,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:25,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:25,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866912895] [2022-11-21 13:52:25,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866912895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:25,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452928245] [2022-11-21 13:52:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:25,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:25,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:25,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:25,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:52:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:25,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:52:25,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:25,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:52:25,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452928245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:25,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:52:25,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 13:52:25,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946720629] [2022-11-21 13:52:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:25,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:52:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:52:25,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:52:25,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-21 13:52:25,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 164 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 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) [2022-11-21 13:52:25,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:25,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-21 13:52:25,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:26,187 INFO L130 PetriNetUnfolder]: 156/1179 cut-off events. [2022-11-21 13:52:26,187 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-21 13:52:26,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 1179 events. 156/1179 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7429 event pairs, 100 based on Foata normal form. 4/982 useless extension candidates. Maximal degree in co-relation 1284. Up to 192 conditions per place. [2022-11-21 13:52:26,197 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 33 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2022-11-21 13:52:26,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 533 flow [2022-11-21 13:52:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:52:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:52:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2022-11-21 13:52:26,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617265087853323 [2022-11-21 13:52:26,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2022-11-21 13:52:26,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2022-11-21 13:52:26,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:26,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2022-11-21 13:52:26,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 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) [2022-11-21 13:52:26,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-21 13:52:26,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-21 13:52:26,212 INFO L175 Difference]: Start difference. First operand has 178 places, 164 transitions, 438 flow. Second operand 7 states and 1128 transitions. [2022-11-21 13:52:26,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 533 flow [2022-11-21 13:52:26,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 501 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 13:52:26,225 INFO L231 Difference]: Finished difference. Result has 174 places, 160 transitions, 401 flow [2022-11-21 13:52:26,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=174, PETRI_TRANSITIONS=160} [2022-11-21 13:52:26,227 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-21 13:52:26,227 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 160 transitions, 401 flow [2022-11-21 13:52:26,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 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) [2022-11-21 13:52:26,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:26,228 INFO L209 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] [2022-11-21 13:52:26,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:26,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:26,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1925412711, now seen corresponding path program 1 times [2022-11-21 13:52:26,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:26,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880627971] [2022-11-21 13:52:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:26,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:26,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880627971] [2022-11-21 13:52:26,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880627971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:26,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:52:26,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:52:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132468868] [2022-11-21 13:52:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:26,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:52:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:52:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:52:26,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-21 13:52:26,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 160 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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) [2022-11-21 13:52:26,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:26,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-21 13:52:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:27,195 INFO L130 PetriNetUnfolder]: 901/3304 cut-off events. [2022-11-21 13:52:27,196 INFO L131 PetriNetUnfolder]: For 52/87 co-relation queries the response was YES. [2022-11-21 13:52:27,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 3304 events. 901/3304 cut-off events. For 52/87 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 28432 event pairs, 525 based on Foata normal form. 5/2819 useless extension candidates. Maximal degree in co-relation 4564. Up to 931 conditions per place. [2022-11-21 13:52:27,221 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 35 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-21 13:52:27,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 534 flow [2022-11-21 13:52:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:52:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:52:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2022-11-21 13:52:27,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887700534759359 [2022-11-21 13:52:27,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2022-11-21 13:52:27,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2022-11-21 13:52:27,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:27,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2022-11-21 13:52:27,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 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) [2022-11-21 13:52:27,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-21 13:52:27,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-21 13:52:27,231 INFO L175 Difference]: Start difference. First operand has 174 places, 160 transitions, 401 flow. Second operand 5 states and 831 transitions. [2022-11-21 13:52:27,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 534 flow [2022-11-21 13:52:27,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 181 transitions, 520 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 13:52:27,238 INFO L231 Difference]: Finished difference. Result has 176 places, 163 transitions, 417 flow [2022-11-21 13:52:27,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=176, PETRI_TRANSITIONS=163} [2022-11-21 13:52:27,240 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-11-21 13:52:27,241 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 417 flow [2022-11-21 13:52:27,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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) [2022-11-21 13:52:27,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:27,242 INFO L209 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] [2022-11-21 13:52:27,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:52:27,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 884461943, now seen corresponding path program 1 times [2022-11-21 13:52:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:27,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137236312] [2022-11-21 13:52:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:27,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137236312] [2022-11-21 13:52:27,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137236312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:27,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:52:27,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:52:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708296006] [2022-11-21 13:52:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:52:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:52:27,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:52:27,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-21 13:52:27,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 163 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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) [2022-11-21 13:52:27,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:27,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-21 13:52:27,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:28,099 INFO L130 PetriNetUnfolder]: 1241/3519 cut-off events. [2022-11-21 13:52:28,100 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-11-21 13:52:28,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6829 conditions, 3519 events. 1241/3519 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30524 event pairs, 570 based on Foata normal form. 0/3154 useless extension candidates. Maximal degree in co-relation 5455. Up to 1361 conditions per place. [2022-11-21 13:52:28,129 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 34 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2022-11-21 13:52:28,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 183 transitions, 542 flow [2022-11-21 13:52:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:52:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:52:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2022-11-21 13:52:28,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877005347593583 [2022-11-21 13:52:28,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2022-11-21 13:52:28,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2022-11-21 13:52:28,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:28,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2022-11-21 13:52:28,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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) [2022-11-21 13:52:28,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-21 13:52:28,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-21 13:52:28,139 INFO L175 Difference]: Start difference. First operand has 176 places, 163 transitions, 417 flow. Second operand 5 states and 830 transitions. [2022-11-21 13:52:28,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 183 transitions, 542 flow [2022-11-21 13:52:28,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:52:28,146 INFO L231 Difference]: Finished difference. Result has 182 places, 166 transitions, 445 flow [2022-11-21 13:52:28,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=182, PETRI_TRANSITIONS=166} [2022-11-21 13:52:28,149 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 23 predicate places. [2022-11-21 13:52:28,149 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 166 transitions, 445 flow [2022-11-21 13:52:28,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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) [2022-11-21 13:52:28,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:28,152 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:28,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:52:28,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1930627857, now seen corresponding path program 1 times [2022-11-21 13:52:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:28,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559923498] [2022-11-21 13:52:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559923498] [2022-11-21 13:52:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559923498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:28,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325569756] [2022-11-21 13:52:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:28,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:28,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:52:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:52:28,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:52:28,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:52:28,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325569756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:28,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:52:28,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 13:52:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86010531] [2022-11-21 13:52:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:52:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:52:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:52:28,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 187 [2022-11-21 13:52:28,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 166 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 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) [2022-11-21 13:52:28,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:28,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 187 [2022-11-21 13:52:28,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:29,838 INFO L130 PetriNetUnfolder]: 1501/5011 cut-off events. [2022-11-21 13:52:29,838 INFO L131 PetriNetUnfolder]: For 1001/1001 co-relation queries the response was YES. [2022-11-21 13:52:29,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10423 conditions, 5011 events. 1501/5011 cut-off events. For 1001/1001 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 46178 event pairs, 1218 based on Foata normal form. 0/4441 useless extension candidates. Maximal degree in co-relation 9692. Up to 2273 conditions per place. [2022-11-21 13:52:29,882 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 50 selfloop transitions, 8 changer transitions 2/186 dead transitions. [2022-11-21 13:52:29,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 617 flow [2022-11-21 13:52:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:52:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 13:52:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1221 transitions. [2022-11-21 13:52:29,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2022-11-21 13:52:29,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1221 transitions. [2022-11-21 13:52:29,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1221 transitions. [2022-11-21 13:52:29,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:29,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1221 transitions. [2022-11-21 13:52:29,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.625) internal successors, (1221), 8 states have internal predecessors, (1221), 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) [2022-11-21 13:52:29,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-21 13:52:29,896 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-21 13:52:29,896 INFO L175 Difference]: Start difference. First operand has 182 places, 166 transitions, 445 flow. Second operand 8 states and 1221 transitions. [2022-11-21 13:52:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 617 flow [2022-11-21 13:52:29,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 186 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:52:29,923 INFO L231 Difference]: Finished difference. Result has 191 places, 168 transitions, 477 flow [2022-11-21 13:52:29,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=191, PETRI_TRANSITIONS=168} [2022-11-21 13:52:29,927 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 32 predicate places. [2022-11-21 13:52:29,927 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 168 transitions, 477 flow [2022-11-21 13:52:29,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 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) [2022-11-21 13:52:29,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:29,929 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:29,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:30,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 13:52:30,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1337321091, now seen corresponding path program 1 times [2022-11-21 13:52:30,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:30,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664798262] [2022-11-21 13:52:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664798262] [2022-11-21 13:52:30,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664798262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521023357] [2022-11-21 13:52:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:30,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:30,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:30,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:30,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:52:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:30,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:52:30,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 13:52:30,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:52:30,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521023357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:30,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:52:30,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 13:52:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35714563] [2022-11-21 13:52:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:30,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:52:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:52:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:52:30,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 187 [2022-11-21 13:52:30,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 168 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 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) [2022-11-21 13:52:30,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:30,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 187 [2022-11-21 13:52:30,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:31,510 INFO L130 PetriNetUnfolder]: 1326/3761 cut-off events. [2022-11-21 13:52:31,510 INFO L131 PetriNetUnfolder]: For 858/862 co-relation queries the response was YES. [2022-11-21 13:52:31,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 3761 events. 1326/3761 cut-off events. For 858/862 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 31727 event pairs, 1224 based on Foata normal form. 4/3439 useless extension candidates. Maximal degree in co-relation 7813. Up to 2201 conditions per place. [2022-11-21 13:52:31,550 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 36 selfloop transitions, 6 changer transitions 15/183 dead transitions. [2022-11-21 13:52:31,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 183 transitions, 630 flow [2022-11-21 13:52:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:52:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 13:52:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1217 transitions. [2022-11-21 13:52:31,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8135026737967914 [2022-11-21 13:52:31,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1217 transitions. [2022-11-21 13:52:31,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1217 transitions. [2022-11-21 13:52:31,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:31,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1217 transitions. [2022-11-21 13:52:31,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.125) internal successors, (1217), 8 states have internal predecessors, (1217), 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) [2022-11-21 13:52:31,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-21 13:52:31,564 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-21 13:52:31,565 INFO L175 Difference]: Start difference. First operand has 191 places, 168 transitions, 477 flow. Second operand 8 states and 1217 transitions. [2022-11-21 13:52:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 183 transitions, 630 flow [2022-11-21 13:52:31,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 183 transitions, 620 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 13:52:31,578 INFO L231 Difference]: Finished difference. Result has 196 places, 166 transitions, 469 flow [2022-11-21 13:52:31,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=196, PETRI_TRANSITIONS=166} [2022-11-21 13:52:31,579 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 37 predicate places. [2022-11-21 13:52:31,580 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 166 transitions, 469 flow [2022-11-21 13:52:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 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) [2022-11-21 13:52:31,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:31,581 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:31,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:31,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:31,787 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash 739861376, now seen corresponding path program 2 times [2022-11-21 13:52:31,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:31,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998797288] [2022-11-21 13:52:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:32,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:32,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998797288] [2022-11-21 13:52:32,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998797288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:32,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192671136] [2022-11-21 13:52:32,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:52:32,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:32,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:32,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:52:32,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:52:32,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:52:32,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:52:32,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 13:52:32,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 13:52:32,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192671136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:32,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:32,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 13:52:32,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010604472] [2022-11-21 13:52:32,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:32,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 13:52:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 13:52:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:52:32,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 187 [2022-11-21 13:52:32,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 166 transitions, 469 flow. Second operand has 18 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 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) [2022-11-21 13:52:32,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:32,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 187 [2022-11-21 13:52:32,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:34,222 INFO L130 PetriNetUnfolder]: 1225/4643 cut-off events. [2022-11-21 13:52:34,222 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-11-21 13:52:34,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9582 conditions, 4643 events. 1225/4643 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 42689 event pairs, 1092 based on Foata normal form. 2/4450 useless extension candidates. Maximal degree in co-relation 9458. Up to 433 conditions per place. [2022-11-21 13:52:34,253 INFO L137 encePairwiseOnDemand]: 176/187 looper letters, 109 selfloop transitions, 25 changer transitions 0/254 dead transitions. [2022-11-21 13:52:34,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 254 transitions, 987 flow [2022-11-21 13:52:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:52:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 13:52:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3520 transitions. [2022-11-21 13:52:34,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2022-11-21 13:52:34,261 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3520 transitions. [2022-11-21 13:52:34,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3520 transitions. [2022-11-21 13:52:34,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:34,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3520 transitions. [2022-11-21 13:52:34,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 146.66666666666666) internal successors, (3520), 24 states have internal predecessors, (3520), 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) [2022-11-21 13:52:34,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 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) [2022-11-21 13:52:34,282 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 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) [2022-11-21 13:52:34,282 INFO L175 Difference]: Start difference. First operand has 196 places, 166 transitions, 469 flow. Second operand 24 states and 3520 transitions. [2022-11-21 13:52:34,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 254 transitions, 987 flow [2022-11-21 13:52:34,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 254 transitions, 937 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-11-21 13:52:34,312 INFO L231 Difference]: Finished difference. Result has 201 places, 170 transitions, 508 flow [2022-11-21 13:52:34,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=508, PETRI_PLACES=201, PETRI_TRANSITIONS=170} [2022-11-21 13:52:34,315 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2022-11-21 13:52:34,315 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 170 transitions, 508 flow [2022-11-21 13:52:34,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 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) [2022-11-21 13:52:34,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:34,317 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:34,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:34,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:34,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash 224976142, now seen corresponding path program 1 times [2022-11-21 13:52:34,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:34,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489487003] [2022-11-21 13:52:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:52:34,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:34,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489487003] [2022-11-21 13:52:34,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489487003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:34,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077899542] [2022-11-21 13:52:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:34,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:34,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:34,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:34,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:52:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:34,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:52:34,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:35,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:35,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077899542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:35,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:35,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 13:52:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923014229] [2022-11-21 13:52:35,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 13:52:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 13:52:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:52:35,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 187 [2022-11-21 13:52:35,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 170 transitions, 508 flow. Second operand has 23 states, 23 states have (on average 139.69565217391303) internal successors, (3213), 23 states have internal predecessors, (3213), 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) [2022-11-21 13:52:35,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:35,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 187 [2022-11-21 13:52:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:37,979 INFO L130 PetriNetUnfolder]: 3760/8351 cut-off events. [2022-11-21 13:52:37,979 INFO L131 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2022-11-21 13:52:38,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19603 conditions, 8351 events. 3760/8351 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 74223 event pairs, 1100 based on Foata normal form. 85/7337 useless extension candidates. Maximal degree in co-relation 12309. Up to 2024 conditions per place. [2022-11-21 13:52:38,034 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 146 selfloop transitions, 32 changer transitions 9/299 dead transitions. [2022-11-21 13:52:38,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 299 transitions, 1235 flow [2022-11-21 13:52:38,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 13:52:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-21 13:52:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3577 transitions. [2022-11-21 13:52:38,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651336898395722 [2022-11-21 13:52:38,044 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3577 transitions. [2022-11-21 13:52:38,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3577 transitions. [2022-11-21 13:52:38,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:38,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3577 transitions. [2022-11-21 13:52:38,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.08) internal successors, (3577), 25 states have internal predecessors, (3577), 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) [2022-11-21 13:52:38,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-21 13:52:38,065 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-21 13:52:38,065 INFO L175 Difference]: Start difference. First operand has 201 places, 170 transitions, 508 flow. Second operand 25 states and 3577 transitions. [2022-11-21 13:52:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 299 transitions, 1235 flow [2022-11-21 13:52:38,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 299 transitions, 1177 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-21 13:52:38,083 INFO L231 Difference]: Finished difference. Result has 214 places, 184 transitions, 609 flow [2022-11-21 13:52:38,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=609, PETRI_PLACES=214, PETRI_TRANSITIONS=184} [2022-11-21 13:52:38,085 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 55 predicate places. [2022-11-21 13:52:38,085 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 184 transitions, 609 flow [2022-11-21 13:52:38,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.69565217391303) internal successors, (3213), 23 states have internal predecessors, (3213), 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) [2022-11-21 13:52:38,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:38,086 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:38,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:38,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 13:52:38,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1412662976, now seen corresponding path program 1 times [2022-11-21 13:52:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:38,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479725803] [2022-11-21 13:52:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:38,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:52:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:38,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479725803] [2022-11-21 13:52:38,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479725803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826142361] [2022-11-21 13:52:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:38,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:38,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:52:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:38,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:52:38,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:38,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:39,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826142361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:39,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:39,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 13:52:39,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654635937] [2022-11-21 13:52:39,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:39,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 13:52:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 13:52:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:52:39,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 187 [2022-11-21 13:52:39,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 184 transitions, 609 flow. Second operand has 23 states, 23 states have (on average 139.7826086956522) internal successors, (3215), 23 states have internal predecessors, (3215), 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) [2022-11-21 13:52:39,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:39,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 187 [2022-11-21 13:52:39,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:42,222 INFO L130 PetriNetUnfolder]: 5215/10796 cut-off events. [2022-11-21 13:52:42,222 INFO L131 PetriNetUnfolder]: For 2978/3756 co-relation queries the response was YES. [2022-11-21 13:52:42,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28380 conditions, 10796 events. 5215/10796 cut-off events. For 2978/3756 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 98454 event pairs, 1658 based on Foata normal form. 903/11098 useless extension candidates. Maximal degree in co-relation 20387. Up to 3079 conditions per place. [2022-11-21 13:52:42,293 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 116 selfloop transitions, 26 changer transitions 72/330 dead transitions. [2022-11-21 13:52:42,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 330 transitions, 1519 flow [2022-11-21 13:52:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 13:52:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-21 13:52:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3574 transitions. [2022-11-21 13:52:42,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7644919786096257 [2022-11-21 13:52:42,299 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3574 transitions. [2022-11-21 13:52:42,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3574 transitions. [2022-11-21 13:52:42,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:42,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3574 transitions. [2022-11-21 13:52:42,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 142.96) internal successors, (3574), 25 states have internal predecessors, (3574), 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) [2022-11-21 13:52:42,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-21 13:52:42,314 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-21 13:52:42,315 INFO L175 Difference]: Start difference. First operand has 214 places, 184 transitions, 609 flow. Second operand 25 states and 3574 transitions. [2022-11-21 13:52:42,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 330 transitions, 1519 flow [2022-11-21 13:52:42,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 330 transitions, 1482 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-21 13:52:42,344 INFO L231 Difference]: Finished difference. Result has 233 places, 183 transitions, 641 flow [2022-11-21 13:52:42,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=641, PETRI_PLACES=233, PETRI_TRANSITIONS=183} [2022-11-21 13:52:42,345 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 74 predicate places. [2022-11-21 13:52:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 183 transitions, 641 flow [2022-11-21 13:52:42,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.7826086956522) internal successors, (3215), 23 states have internal predecessors, (3215), 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) [2022-11-21 13:52:42,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:42,347 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:42,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:42,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -272891788, now seen corresponding path program 1 times [2022-11-21 13:52:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:42,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190528947] [2022-11-21 13:52:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:52:42,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:42,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190528947] [2022-11-21 13:52:42,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190528947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:42,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691060088] [2022-11-21 13:52:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:42,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:42,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:42,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:42,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:52:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:42,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:52:42,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:52:42,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:52:42,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691060088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:42,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:52:42,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 13:52:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513177959] [2022-11-21 13:52:42,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:52:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:52:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:52:42,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-21 13:52:42,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 183 transitions, 641 flow. Second operand has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 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) [2022-11-21 13:52:42,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:42,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-21 13:52:42,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:44,104 INFO L130 PetriNetUnfolder]: 2026/6664 cut-off events. [2022-11-21 13:52:44,105 INFO L131 PetriNetUnfolder]: For 2730/2760 co-relation queries the response was YES. [2022-11-21 13:52:44,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16286 conditions, 6664 events. 2026/6664 cut-off events. For 2730/2760 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 67089 event pairs, 390 based on Foata normal form. 110/6624 useless extension candidates. Maximal degree in co-relation 11978. Up to 1145 conditions per place. [2022-11-21 13:52:44,157 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 42 selfloop transitions, 8 changer transitions 0/206 dead transitions. [2022-11-21 13:52:44,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 206 transitions, 800 flow [2022-11-21 13:52:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:52:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:52:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1153 transitions. [2022-11-21 13:52:44,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808250572956455 [2022-11-21 13:52:44,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1153 transitions. [2022-11-21 13:52:44,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1153 transitions. [2022-11-21 13:52:44,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:44,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1153 transitions. [2022-11-21 13:52:44,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.71428571428572) internal successors, (1153), 7 states have internal predecessors, (1153), 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) [2022-11-21 13:52:44,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-21 13:52:44,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-21 13:52:44,168 INFO L175 Difference]: Start difference. First operand has 233 places, 183 transitions, 641 flow. Second operand 7 states and 1153 transitions. [2022-11-21 13:52:44,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 206 transitions, 800 flow [2022-11-21 13:52:44,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 206 transitions, 759 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-11-21 13:52:44,202 INFO L231 Difference]: Finished difference. Result has 212 places, 181 transitions, 604 flow [2022-11-21 13:52:44,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2022-11-21 13:52:44,204 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 53 predicate places. [2022-11-21 13:52:44,204 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 604 flow [2022-11-21 13:52:44,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 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) [2022-11-21 13:52:44,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:44,205 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:44,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:44,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:44,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1132596999, now seen corresponding path program 2 times [2022-11-21 13:52:44,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:44,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695233853] [2022-11-21 13:52:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:44,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:44,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695233853] [2022-11-21 13:52:44,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695233853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:44,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369820081] [2022-11-21 13:52:44,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:52:44,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:44,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:44,886 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:44,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:52:45,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:52:45,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:52:45,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:52:45,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 13:52:45,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 13:52:45,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369820081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:45,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:45,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-21 13:52:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105108773] [2022-11-21 13:52:45,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:45,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:52:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:52:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:52:45,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 187 [2022-11-21 13:52:45,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 181 transitions, 604 flow. Second operand has 19 states, 19 states have (on average 137.31578947368422) internal successors, (2609), 19 states have internal predecessors, (2609), 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) [2022-11-21 13:52:45,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:45,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 187 [2022-11-21 13:52:45,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:48,035 INFO L130 PetriNetUnfolder]: 4160/10448 cut-off events. [2022-11-21 13:52:48,035 INFO L131 PetriNetUnfolder]: For 4722/5479 co-relation queries the response was YES. [2022-11-21 13:52:48,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27142 conditions, 10448 events. 4160/10448 cut-off events. For 4722/5479 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 102232 event pairs, 760 based on Foata normal form. 754/10987 useless extension candidates. Maximal degree in co-relation 19149. Up to 1980 conditions per place. [2022-11-21 13:52:48,091 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 138 selfloop transitions, 38 changer transitions 50/337 dead transitions. [2022-11-21 13:52:48,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 337 transitions, 1613 flow [2022-11-21 13:52:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 13:52:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 13:52:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4168 transitions. [2022-11-21 13:52:48,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7429590017825312 [2022-11-21 13:52:48,097 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4168 transitions. [2022-11-21 13:52:48,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4168 transitions. [2022-11-21 13:52:48,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:48,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4168 transitions. [2022-11-21 13:52:48,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 138.93333333333334) internal successors, (4168), 30 states have internal predecessors, (4168), 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) [2022-11-21 13:52:48,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 187.0) internal successors, (5797), 31 states have internal predecessors, (5797), 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) [2022-11-21 13:52:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 187.0) internal successors, (5797), 31 states have internal predecessors, (5797), 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) [2022-11-21 13:52:48,115 INFO L175 Difference]: Start difference. First operand has 212 places, 181 transitions, 604 flow. Second operand 30 states and 4168 transitions. [2022-11-21 13:52:48,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 337 transitions, 1613 flow [2022-11-21 13:52:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 337 transitions, 1587 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-21 13:52:48,163 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 728 flow [2022-11-21 13:52:48,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=728, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2022-11-21 13:52:48,164 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 78 predicate places. [2022-11-21 13:52:48,164 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 728 flow [2022-11-21 13:52:48,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.31578947368422) internal successors, (2609), 19 states have internal predecessors, (2609), 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) [2022-11-21 13:52:48,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:48,165 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:48,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:48,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:48,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:48,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -391017646, now seen corresponding path program 1 times [2022-11-21 13:52:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:48,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371083211] [2022-11-21 13:52:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:52:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371083211] [2022-11-21 13:52:48,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371083211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:48,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200810288] [2022-11-21 13:52:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:48,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:48,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:48,669 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:48,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 13:52:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:48,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:52:48,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:52:48,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:52:48,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200810288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:52:48,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:52:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 13:52:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698761669] [2022-11-21 13:52:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:52:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:52:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:52:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:52:48,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-21 13:52:48,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2022-11-21 13:52:48,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:48,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-21 13:52:48,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:49,894 INFO L130 PetriNetUnfolder]: 1890/4227 cut-off events. [2022-11-21 13:52:49,895 INFO L131 PetriNetUnfolder]: For 1899/1899 co-relation queries the response was YES. [2022-11-21 13:52:49,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 4227 events. 1890/4227 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 36686 event pairs, 115 based on Foata normal form. 126/4189 useless extension candidates. Maximal degree in co-relation 8646. Up to 1260 conditions per place. [2022-11-21 13:52:49,918 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 38 selfloop transitions, 8 changer transitions 0/209 dead transitions. [2022-11-21 13:52:49,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 209 transitions, 869 flow [2022-11-21 13:52:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:52:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:52:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1150 transitions. [2022-11-21 13:52:49,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878533231474408 [2022-11-21 13:52:49,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1150 transitions. [2022-11-21 13:52:49,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1150 transitions. [2022-11-21 13:52:49,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:49,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1150 transitions. [2022-11-21 13:52:49,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 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) [2022-11-21 13:52:49,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-21 13:52:49,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-21 13:52:49,926 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 728 flow. Second operand 7 states and 1150 transitions. [2022-11-21 13:52:49,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 209 transitions, 869 flow [2022-11-21 13:52:49,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 209 transitions, 819 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-21 13:52:49,945 INFO L231 Difference]: Finished difference. Result has 222 places, 185 transitions, 680 flow [2022-11-21 13:52:49,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=222, PETRI_TRANSITIONS=185} [2022-11-21 13:52:49,946 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 63 predicate places. [2022-11-21 13:52:49,946 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 185 transitions, 680 flow [2022-11-21 13:52:49,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2022-11-21 13:52:49,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:52:49,947 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:49,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 13:52:50,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 13:52:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:52:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2122194089, now seen corresponding path program 2 times [2022-11-21 13:52:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:52:50,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026335010] [2022-11-21 13:52:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:52:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:52:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:52:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:52:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:52:50,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026335010] [2022-11-21 13:52:50,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026335010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:52:50,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666156986] [2022-11-21 13:52:50,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:52:50,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:50,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:52:50,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:52:50,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 13:52:50,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:52:50,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:52:50,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:52:50,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:52:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 13:52:50,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:52:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 13:52:51,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666156986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:52:51,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:52:51,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-21 13:52:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014043277] [2022-11-21 13:52:51,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:52:51,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:52:51,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:52:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:52:51,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:52:51,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 187 [2022-11-21 13:52:51,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 185 transitions, 680 flow. Second operand has 19 states, 19 states have (on average 137.42105263157896) internal successors, (2611), 19 states have internal predecessors, (2611), 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) [2022-11-21 13:52:51,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:52:51,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 187 [2022-11-21 13:52:51,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:52:53,012 INFO L130 PetriNetUnfolder]: 3654/7952 cut-off events. [2022-11-21 13:52:53,012 INFO L131 PetriNetUnfolder]: For 7480/8892 co-relation queries the response was YES. [2022-11-21 13:52:53,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23835 conditions, 7952 events. 3654/7952 cut-off events. For 7480/8892 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 70373 event pairs, 720 based on Foata normal form. 1533/9306 useless extension candidates. Maximal degree in co-relation 17141. Up to 2124 conditions per place. [2022-11-21 13:52:53,039 INFO L137 encePairwiseOnDemand]: 170/187 looper letters, 0 selfloop transitions, 0 changer transitions 302/302 dead transitions. [2022-11-21 13:52:53,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 302 transitions, 1572 flow [2022-11-21 13:52:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 13:52:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-21 13:52:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3604 transitions. [2022-11-21 13:52:53,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7412587412587412 [2022-11-21 13:52:53,045 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3604 transitions. [2022-11-21 13:52:53,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3604 transitions. [2022-11-21 13:52:53,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:52:53,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3604 transitions. [2022-11-21 13:52:53,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 138.6153846153846) internal successors, (3604), 26 states have internal predecessors, (3604), 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) [2022-11-21 13:52:53,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 187.0) internal successors, (5049), 27 states have internal predecessors, (5049), 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) [2022-11-21 13:52:53,061 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 187.0) internal successors, (5049), 27 states have internal predecessors, (5049), 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) [2022-11-21 13:52:53,062 INFO L175 Difference]: Start difference. First operand has 222 places, 185 transitions, 680 flow. Second operand 26 states and 3604 transitions. [2022-11-21 13:52:53,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 302 transitions, 1572 flow [2022-11-21 13:52:53,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 302 transitions, 1546 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-21 13:52:53,114 INFO L231 Difference]: Finished difference. Result has 240 places, 0 transitions, 0 flow [2022-11-21 13:52:53,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=240, PETRI_TRANSITIONS=0} [2022-11-21 13:52:53,115 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 81 predicate places. [2022-11-21 13:52:53,115 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 0 transitions, 0 flow [2022-11-21 13:52:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.42105263157896) internal successors, (2611), 19 states have internal predecessors, (2611), 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) [2022-11-21 13:52:53,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-21 13:52:53,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-21 13:52:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-21 13:52:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-21 13:52:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-21 13:52:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-21 13:52:53,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-21 13:52:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-21 13:52:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-21 13:52:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-21 13:52:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-21 13:52:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-21 13:52:53,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-21 13:52:53,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:52:53,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:52:53,334 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:52:53,340 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 13:52:53,340 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:52:53,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:52:53 BasicIcfg [2022-11-21 13:52:53,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:52:53,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:52:53,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:52:53,346 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:52:53,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:52:22" (3/4) ... [2022-11-21 13:52:53,349 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 13:52:53,356 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 13:52:53,356 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 13:52:53,356 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 13:52:53,367 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-21 13:52:53,367 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 13:52:53,368 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 13:52:53,368 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 13:52:53,421 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:52:53,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:52:53,422 INFO L158 Benchmark]: Toolchain (without parser) took 32208.98ms. Allocated memory was 146.8MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 114.6MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 797.0MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,423 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 146.8MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:52:53,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.82ms. Allocated memory is still 146.8MB. Free memory was 114.6MB in the beginning and 102.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.26ms. Allocated memory is still 146.8MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,424 INFO L158 Benchmark]: Boogie Preprocessor took 31.10ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 98.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,424 INFO L158 Benchmark]: RCFGBuilder took 729.65ms. Allocated memory is still 146.8MB. Free memory was 98.7MB in the beginning and 76.2MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,425 INFO L158 Benchmark]: TraceAbstraction took 30936.85ms. Allocated memory was 146.8MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 75.6MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 916.5MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,425 INFO L158 Benchmark]: Witness Printer took 76.58ms. Allocated memory is still 6.1GB. Free memory was 5.3GB in the beginning and 5.3GB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:52:53,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 146.8MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.82ms. Allocated memory is still 146.8MB. Free memory was 114.6MB in the beginning and 102.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.26ms. Allocated memory is still 146.8MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.10ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 98.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.65ms. Allocated memory is still 146.8MB. Free memory was 98.7MB in the beginning and 76.2MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 30936.85ms. Allocated memory was 146.8MB in the beginning and 6.1GB in the end (delta: 6.0GB). Free memory was 75.6MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 916.5MB. Max. memory is 16.1GB. * Witness Printer took 76.58ms. Allocated memory is still 6.1GB. Free memory was 5.3GB in the beginning and 5.3GB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.8s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2948 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2948 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 384 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3853 IncrementalHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 94 mSDtfsCounter, 3853 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2055 GetRequests, 1757 SyntacticMatches, 13 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=12, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 2616 NumberOfCodeBlocks, 2516 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3242 ConstructedInterpolants, 0 QuantifiedInterpolants, 6448 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2346 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 299/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 13:52:53,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcb69ebd-9ca5-49e1-839f-2563c4a2c383/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE