./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.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_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/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_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/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_36d606c6-b42b-4353-911e-1413867e4d61/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- 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 16:32:45,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:32:45,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:32:45,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:32:45,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:32:45,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:32:45,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:32:45,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:32:45,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:32:45,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:32:45,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:32:45,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:32:45,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:32:45,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:32:45,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:32:45,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:32:45,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:32:45,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:32:45,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:32:45,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:32:45,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:32:45,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:32:45,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:32:45,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:32:45,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:32:45,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:32:45,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:32:45,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:32:45,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:32:45,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:32:45,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:32:45,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:32:45,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:32:45,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:32:45,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:32:45,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:32:45,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:32:45,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:32:45,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:32:45,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:32:45,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:32:45,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:32:45,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:32:45,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:32:45,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:32:45,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:32:45,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:32:45,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:32:45,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:32:45,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:32:45,315 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:32:45,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:32:45,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:32:45,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:32:45,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:32:45,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:32:45,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:32:45,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:32:45,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:32:45,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:32:45,320 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:32:45,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:32:45,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:32:45,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:32:45,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:32:45,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:32:45,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:32:45,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:32:45,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:45,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:32:45,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:32:45,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:32:45,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:32:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:32:45,324 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:32:45,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:32:45,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:32:45,325 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_36d606c6-b42b-4353-911e-1413867e4d61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-21 16:32:45,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:32:45,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:32:45,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:32:45,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:32:45,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:32:45,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-21 16:32:48,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:32:48,914 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:32:48,914 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-21 16:32:48,921 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/data/757f96372/6b757f501d884f4a80443119366a2d97/FLAG2aafdeb01 [2022-11-21 16:32:48,936 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/data/757f96372/6b757f501d884f4a80443119366a2d97 [2022-11-21 16:32:48,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:32:48,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:32:48,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:48,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:32:48,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:32:48,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:48" (1/1) ... [2022-11-21 16:32:48,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5a54c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:48, skipping insertion in model container [2022-11-21 16:32:48,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:32:48" (1/1) ... [2022-11-21 16:32:48,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:32:48,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:32:49,200 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_36d606c6-b42b-4353-911e-1413867e4d61/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-21 16:32:49,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:49,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:32:49,246 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_36d606c6-b42b-4353-911e-1413867e4d61/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-21 16:32:49,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:32:49,265 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:32:49,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49 WrapperNode [2022-11-21 16:32:49,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:32:49,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:49,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:32:49,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:32:49,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,326 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 201 [2022-11-21 16:32:49,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:32:49,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:32:49,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:32:49,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:32:49,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:32:49,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:32:49,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:32:49,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:32:49,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (1/1) ... [2022-11-21 16:32:49,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:32:49,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:49,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:32:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:32:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:32:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:32:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:32:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:32:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:32:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:32:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:32:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:32:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:32:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:32:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:32:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:32:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:32:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:32:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:32:49,493 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 16:32:49,655 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:32:49,658 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:32:50,258 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:32:50,269 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:32:50,269 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 16:32:50,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:50 BoogieIcfgContainer [2022-11-21 16:32:50,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:32:50,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:32:50,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:32:50,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:32:50,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:32:48" (1/3) ... [2022-11-21 16:32:50,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6123d69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:50, skipping insertion in model container [2022-11-21 16:32:50,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:32:49" (2/3) ... [2022-11-21 16:32:50,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6123d69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:32:50, skipping insertion in model container [2022-11-21 16:32:50,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:50" (3/3) ... [2022-11-21 16:32:50,284 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-11-21 16:32:50,293 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:32:50,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:32:50,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-21 16:32:50,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:32:50,392 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:32:50,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 321 transitions, 666 flow [2022-11-21 16:32:50,552 INFO L130 PetriNetUnfolder]: 25/318 cut-off events. [2022-11-21 16:32:50,553 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:32:50,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 25/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-11-21 16:32:50,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 321 transitions, 666 flow [2022-11-21 16:32:50,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 282 transitions, 579 flow [2022-11-21 16:32:50,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:32:50,590 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;@493928b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:32:50,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-21 16:32:50,604 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-21 16:32:50,605 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:32:50,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:50,605 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] [2022-11-21 16:32:50,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash -507091820, now seen corresponding path program 1 times [2022-11-21 16:32:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:50,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683612338] [2022-11-21 16:32:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:51,065 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 16:32:51,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:51,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683612338] [2022-11-21 16:32:51,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683612338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:51,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:51,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:51,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957685376] [2022-11-21 16:32:51,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:51,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:51,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:51,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-21 16:32:51,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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 16:32:51,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:51,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-21 16:32:51,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:51,405 INFO L130 PetriNetUnfolder]: 13/417 cut-off events. [2022-11-21 16:32:51,405 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-21 16:32:51,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 417 events. 13/417 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 877 event pairs, 0 based on Foata normal form. 28/401 useless extension candidates. Maximal degree in co-relation 458. Up to 57 conditions per place. [2022-11-21 16:32:51,410 INFO L137 encePairwiseOnDemand]: 278/321 looper letters, 74 selfloop transitions, 19 changer transitions 9/306 dead transitions. [2022-11-21 16:32:51,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 306 transitions, 828 flow [2022-11-21 16:32:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1365 transitions. [2022-11-21 16:32:51,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504672897196262 [2022-11-21 16:32:51,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1365 transitions. [2022-11-21 16:32:51,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1365 transitions. [2022-11-21 16:32:51,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:51,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1365 transitions. [2022-11-21 16:32:51,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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 16:32:51,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 16:32:51,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 16:32:51,453 INFO L175 Difference]: Start difference. First operand has 269 places, 282 transitions, 579 flow. Second operand 5 states and 1365 transitions. [2022-11-21 16:32:51,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 306 transitions, 828 flow [2022-11-21 16:32:51,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 306 transitions, 810 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:32:51,464 INFO L231 Difference]: Finished difference. Result has 271 places, 272 transitions, 661 flow [2022-11-21 16:32:51,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=661, PETRI_PLACES=271, PETRI_TRANSITIONS=272} [2022-11-21 16:32:51,471 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-11-21 16:32:51,471 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 272 transitions, 661 flow [2022-11-21 16:32:51,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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 16:32:51,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:51,472 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:32:51,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:32:51,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1782756961, now seen corresponding path program 1 times [2022-11-21 16:32:51,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:51,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589885889] [2022-11-21 16:32:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:51,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:51,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:51,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589885889] [2022-11-21 16:32:51,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589885889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:51,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837155891] [2022-11-21 16:32:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:51,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:51,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:51,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:32:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:51,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:32:51,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:51,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:52,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837155891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:52,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:52,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:32:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772746259] [2022-11-21 16:32:52,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:32:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:32:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:32:52,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-21 16:32:52,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 272 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 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 16:32:52,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:52,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-21 16:32:52,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:52,730 INFO L130 PetriNetUnfolder]: 31/865 cut-off events. [2022-11-21 16:32:52,730 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-21 16:32:52,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 865 events. 31/865 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3386 event pairs, 0 based on Foata normal form. 12/812 useless extension candidates. Maximal degree in co-relation 476. Up to 46 conditions per place. [2022-11-21 16:32:52,743 INFO L137 encePairwiseOnDemand]: 290/321 looper letters, 137 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2022-11-21 16:32:52,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 425 transitions, 1539 flow [2022-11-21 16:32:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:32:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:32:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4697 transitions. [2022-11-21 16:32:52,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8129110418830044 [2022-11-21 16:32:52,754 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4697 transitions. [2022-11-21 16:32:52,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4697 transitions. [2022-11-21 16:32:52,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:52,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4697 transitions. [2022-11-21 16:32:52,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 260.94444444444446) internal successors, (4697), 18 states have internal predecessors, (4697), 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 16:32:52,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 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 16:32:52,783 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 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 16:32:52,783 INFO L175 Difference]: Start difference. First operand has 271 places, 272 transitions, 661 flow. Second operand 18 states and 4697 transitions. [2022-11-21 16:32:52,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 425 transitions, 1539 flow [2022-11-21 16:32:52,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 425 transitions, 1528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:32:52,794 INFO L231 Difference]: Finished difference. Result has 282 places, 329 transitions, 1152 flow [2022-11-21 16:32:52,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=282, PETRI_TRANSITIONS=329} [2022-11-21 16:32:52,795 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 13 predicate places. [2022-11-21 16:32:52,795 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 329 transitions, 1152 flow [2022-11-21 16:32:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 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 16:32:52,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:52,798 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] [2022-11-21 16:32:52,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:53,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:53,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:53,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash -569108358, now seen corresponding path program 1 times [2022-11-21 16:32:53,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:53,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669579012] [2022-11-21 16:32:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:53,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:53,139 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 16:32:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669579012] [2022-11-21 16:32:53,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669579012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:53,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655342886] [2022-11-21 16:32:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:53,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:53,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:53,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:32:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:32:53,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:53,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:32:53,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655342886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:53,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:32:53,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:32:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673209547] [2022-11-21 16:32:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:32:53,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:32:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:32:53,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-21 16:32:53,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 329 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 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 16:32:53,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:53,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-21 16:32:53,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:53,718 INFO L130 PetriNetUnfolder]: 31/849 cut-off events. [2022-11-21 16:32:53,718 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2022-11-21 16:32:53,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 849 events. 31/849 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3263 event pairs, 0 based on Foata normal form. 16/800 useless extension candidates. Maximal degree in co-relation 976. Up to 84 conditions per place. [2022-11-21 16:32:53,725 INFO L137 encePairwiseOnDemand]: 298/321 looper letters, 75 selfloop transitions, 59 changer transitions 0/338 dead transitions. [2022-11-21 16:32:53,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 338 transitions, 1376 flow [2022-11-21 16:32:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:32:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:32:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1829 transitions. [2022-11-21 16:32:53,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8139741878059635 [2022-11-21 16:32:53,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1829 transitions. [2022-11-21 16:32:53,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1829 transitions. [2022-11-21 16:32:53,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:53,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1829 transitions. [2022-11-21 16:32:53,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.2857142857143) internal successors, (1829), 7 states have internal predecessors, (1829), 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 16:32:53,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:32:53,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:32:53,742 INFO L175 Difference]: Start difference. First operand has 282 places, 329 transitions, 1152 flow. Second operand 7 states and 1829 transitions. [2022-11-21 16:32:53,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 338 transitions, 1376 flow [2022-11-21 16:32:53,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 338 transitions, 1218 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-21 16:32:53,753 INFO L231 Difference]: Finished difference. Result has 275 places, 313 transitions, 1004 flow [2022-11-21 16:32:53,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=275, PETRI_TRANSITIONS=313} [2022-11-21 16:32:53,755 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 6 predicate places. [2022-11-21 16:32:53,755 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 313 transitions, 1004 flow [2022-11-21 16:32:53,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 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 16:32:53,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:53,756 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:32:53,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:53,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:53,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2012413384, now seen corresponding path program 2 times [2022-11-21 16:32:53,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:53,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106786002] [2022-11-21 16:32:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:53,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:54,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:54,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106786002] [2022-11-21 16:32:54,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106786002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:54,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304179929] [2022-11-21 16:32:54,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:32:54,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:54,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:54,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:32:54,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:32:54,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:32:54,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:32:54,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 16:32:54,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 16:32:54,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304179929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:54,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:54,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:32:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227829171] [2022-11-21 16:32:54,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:54,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:32:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:32:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:32:54,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 321 [2022-11-21 16:32:54,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 313 transitions, 1004 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 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 16:32:54,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:54,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 321 [2022-11-21 16:32:54,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:56,047 INFO L130 PetriNetUnfolder]: 183/1793 cut-off events. [2022-11-21 16:32:56,047 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2022-11-21 16:32:56,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1793 events. 183/1793 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10603 event pairs, 84 based on Foata normal form. 8/1542 useless extension candidates. Maximal degree in co-relation 1554. Up to 69 conditions per place. [2022-11-21 16:32:56,064 INFO L137 encePairwiseOnDemand]: 286/321 looper letters, 230 selfloop transitions, 109 changer transitions 0/513 dead transitions. [2022-11-21 16:32:56,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 513 transitions, 2210 flow [2022-11-21 16:32:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:32:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:32:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5555 transitions. [2022-11-21 16:32:56,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210539979231568 [2022-11-21 16:32:56,076 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5555 transitions. [2022-11-21 16:32:56,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5555 transitions. [2022-11-21 16:32:56,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:56,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5555 transitions. [2022-11-21 16:32:56,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 231.45833333333334) internal successors, (5555), 24 states have internal predecessors, (5555), 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 16:32:56,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 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 16:32:56,106 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 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 16:32:56,106 INFO L175 Difference]: Start difference. First operand has 275 places, 313 transitions, 1004 flow. Second operand 24 states and 5555 transitions. [2022-11-21 16:32:56,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 513 transitions, 2210 flow [2022-11-21 16:32:56,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 513 transitions, 2086 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:32:56,117 INFO L231 Difference]: Finished difference. Result has 286 places, 335 transitions, 1225 flow [2022-11-21 16:32:56,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1225, PETRI_PLACES=286, PETRI_TRANSITIONS=335} [2022-11-21 16:32:56,119 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 17 predicate places. [2022-11-21 16:32:56,119 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 335 transitions, 1225 flow [2022-11-21 16:32:56,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 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 16:32:56,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:56,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:56,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:32:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:56,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1654364910, now seen corresponding path program 1 times [2022-11-21 16:32:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:56,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323571722] [2022-11-21 16:32:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:56,494 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 16:32:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:56,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323571722] [2022-11-21 16:32:56,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323571722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:56,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:56,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:56,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555544265] [2022-11-21 16:32:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:56,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:56,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-21 16:32:56,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 335 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 16:32:56,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:56,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-21 16:32:56,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:57,089 INFO L130 PetriNetUnfolder]: 386/2437 cut-off events. [2022-11-21 16:32:57,089 INFO L131 PetriNetUnfolder]: For 215/264 co-relation queries the response was YES. [2022-11-21 16:32:57,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2437 events. 386/2437 cut-off events. For 215/264 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17985 event pairs, 147 based on Foata normal form. 0/2185 useless extension candidates. Maximal degree in co-relation 911. Up to 477 conditions per place. [2022-11-21 16:32:57,112 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 32 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-11-21 16:32:57,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 353 transitions, 1344 flow [2022-11-21 16:32:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2022-11-21 16:32:57,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052959501557633 [2022-11-21 16:32:57,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2022-11-21 16:32:57,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2022-11-21 16:32:57,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:57,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2022-11-21 16:32:57,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 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 16:32:57,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 16:32:57,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 16:32:57,126 INFO L175 Difference]: Start difference. First operand has 286 places, 335 transitions, 1225 flow. Second operand 5 states and 1453 transitions. [2022-11-21 16:32:57,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 353 transitions, 1344 flow [2022-11-21 16:32:57,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 1177 flow, removed 17 selfloop flow, removed 15 redundant places. [2022-11-21 16:32:57,134 INFO L231 Difference]: Finished difference. Result has 278 places, 338 transitions, 1088 flow [2022-11-21 16:32:57,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1088, PETRI_PLACES=278, PETRI_TRANSITIONS=338} [2022-11-21 16:32:57,138 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 9 predicate places. [2022-11-21 16:32:57,138 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 338 transitions, 1088 flow [2022-11-21 16:32:57,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 16:32:57,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:57,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:57,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:32:57,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -937527496, now seen corresponding path program 1 times [2022-11-21 16:32:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:57,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346698875] [2022-11-21 16:32:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:57,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:57,290 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 16:32:57,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346698875] [2022-11-21 16:32:57,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346698875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:57,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:32:57,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:32:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403259719] [2022-11-21 16:32:57,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:57,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:32:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:57,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:32:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:32:57,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-21 16:32:57,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 338 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 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 16:32:57,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:57,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-21 16:32:57,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:57,984 INFO L130 PetriNetUnfolder]: 526/2514 cut-off events. [2022-11-21 16:32:57,984 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2022-11-21 16:32:58,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 2514 events. 526/2514 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20614 event pairs, 252 based on Foata normal form. 0/2157 useless extension candidates. Maximal degree in co-relation 3359. Up to 666 conditions per place. [2022-11-21 16:32:58,015 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2022-11-21 16:32:58,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 355 transitions, 1202 flow [2022-11-21 16:32:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:32:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:32:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1452 transitions. [2022-11-21 16:32:58,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046728971962616 [2022-11-21 16:32:58,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1452 transitions. [2022-11-21 16:32:58,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1452 transitions. [2022-11-21 16:32:58,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:58,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1452 transitions. [2022-11-21 16:32:58,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 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 16:32:58,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 16:32:58,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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 16:32:58,026 INFO L175 Difference]: Start difference. First operand has 278 places, 338 transitions, 1088 flow. Second operand 5 states and 1452 transitions. [2022-11-21 16:32:58,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 355 transitions, 1202 flow [2022-11-21 16:32:58,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 355 transitions, 1200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:32:58,034 INFO L231 Difference]: Finished difference. Result has 284 places, 341 transitions, 1116 flow [2022-11-21 16:32:58,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1116, PETRI_PLACES=284, PETRI_TRANSITIONS=341} [2022-11-21 16:32:58,036 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 15 predicate places. [2022-11-21 16:32:58,036 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 341 transitions, 1116 flow [2022-11-21 16:32:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 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 16:32:58,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:58,037 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:32:58,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:32:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1303917485, now seen corresponding path program 1 times [2022-11-21 16:32:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588813866] [2022-11-21 16:32:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:58,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:58,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588813866] [2022-11-21 16:32:58,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588813866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:58,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465715697] [2022-11-21 16:32:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:58,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:58,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:58,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:58,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:32:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:58,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:32:58,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:32:58,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:32:58,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465715697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:32:58,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:32:58,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-21 16:32:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467668708] [2022-11-21 16:32:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:32:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:32:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:32:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:32:58,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 321 [2022-11-21 16:32:58,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 341 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 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 16:32:58,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:58,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 321 [2022-11-21 16:32:58,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:00,024 INFO L130 PetriNetUnfolder]: 623/3966 cut-off events. [2022-11-21 16:33:00,024 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2022-11-21 16:33:00,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 3966 events. 623/3966 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32114 event pairs, 432 based on Foata normal form. 0/3549 useless extension candidates. Maximal degree in co-relation 6197. Up to 1172 conditions per place. [2022-11-21 16:33:00,075 INFO L137 encePairwiseOnDemand]: 297/321 looper letters, 196 selfloop transitions, 63 changer transitions 0/470 dead transitions. [2022-11-21 16:33:00,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 470 transitions, 2104 flow [2022-11-21 16:33:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:33:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:33:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2745 transitions. [2022-11-21 16:33:00,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7774001699235344 [2022-11-21 16:33:00,082 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2745 transitions. [2022-11-21 16:33:00,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2745 transitions. [2022-11-21 16:33:00,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:00,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2745 transitions. [2022-11-21 16:33:00,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 249.54545454545453) internal successors, (2745), 11 states have internal predecessors, (2745), 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 16:33:00,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 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 16:33:00,096 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 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 16:33:00,097 INFO L175 Difference]: Start difference. First operand has 284 places, 341 transitions, 1116 flow. Second operand 11 states and 2745 transitions. [2022-11-21 16:33:00,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 470 transitions, 2104 flow [2022-11-21 16:33:00,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 470 transitions, 2102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:33:00,109 INFO L231 Difference]: Finished difference. Result has 296 places, 368 transitions, 1391 flow [2022-11-21 16:33:00,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1391, PETRI_PLACES=296, PETRI_TRANSITIONS=368} [2022-11-21 16:33:00,111 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 27 predicate places. [2022-11-21 16:33:00,111 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 368 transitions, 1391 flow [2022-11-21 16:33:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 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 16:33:00,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:00,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:00,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-21 16:33:00,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:00,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1882691323, now seen corresponding path program 1 times [2022-11-21 16:33:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:00,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035999550] [2022-11-21 16:33:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:00,632 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 16:33:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035999550] [2022-11-21 16:33:00,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035999550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:00,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:00,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:33:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177347648] [2022-11-21 16:33:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:33:00,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:33:00,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:00,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 321 [2022-11-21 16:33:00,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 368 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 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 16:33:00,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:00,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 321 [2022-11-21 16:33:00,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:02,445 INFO L130 PetriNetUnfolder]: 1259/5239 cut-off events. [2022-11-21 16:33:02,445 INFO L131 PetriNetUnfolder]: For 2027/2118 co-relation queries the response was YES. [2022-11-21 16:33:02,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 5239 events. 1259/5239 cut-off events. For 2027/2118 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 48747 event pairs, 814 based on Foata normal form. 91/4593 useless extension candidates. Maximal degree in co-relation 8055. Up to 1778 conditions per place. [2022-11-21 16:33:02,505 INFO L137 encePairwiseOnDemand]: 293/321 looper letters, 224 selfloop transitions, 70 changer transitions 0/504 dead transitions. [2022-11-21 16:33:02,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 504 transitions, 2418 flow [2022-11-21 16:33:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:33:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:33:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3872 transitions. [2022-11-21 16:33:02,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538940809968847 [2022-11-21 16:33:02,515 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3872 transitions. [2022-11-21 16:33:02,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3872 transitions. [2022-11-21 16:33:02,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:02,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3872 transitions. [2022-11-21 16:33:02,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.0) internal successors, (3872), 16 states have internal predecessors, (3872), 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 16:33:02,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 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 16:33:02,535 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 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 16:33:02,535 INFO L175 Difference]: Start difference. First operand has 296 places, 368 transitions, 1391 flow. Second operand 16 states and 3872 transitions. [2022-11-21 16:33:02,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 504 transitions, 2418 flow [2022-11-21 16:33:02,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 504 transitions, 2413 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:33:02,637 INFO L231 Difference]: Finished difference. Result has 312 places, 377 transitions, 1593 flow [2022-11-21 16:33:02,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1593, PETRI_PLACES=312, PETRI_TRANSITIONS=377} [2022-11-21 16:33:02,639 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 43 predicate places. [2022-11-21 16:33:02,640 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 377 transitions, 1593 flow [2022-11-21 16:33:02,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 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 16:33:02,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:02,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:02,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:33:02,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:02,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1766110301, now seen corresponding path program 1 times [2022-11-21 16:33:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:02,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59026096] [2022-11-21 16:33:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:02,869 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 16:33:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59026096] [2022-11-21 16:33:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59026096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:02,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:33:02,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:33:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814374615] [2022-11-21 16:33:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:02,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:33:02,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-21 16:33:02,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 377 transitions, 1593 flow. Second operand has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 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 16:33:02,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:02,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-21 16:33:02,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:05,194 INFO L130 PetriNetUnfolder]: 3180/9239 cut-off events. [2022-11-21 16:33:05,195 INFO L131 PetriNetUnfolder]: For 2712/2736 co-relation queries the response was YES. [2022-11-21 16:33:05,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17137 conditions, 9239 events. 3180/9239 cut-off events. For 2712/2736 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 89952 event pairs, 793 based on Foata normal form. 198/7989 useless extension candidates. Maximal degree in co-relation 16064. Up to 2952 conditions per place. [2022-11-21 16:33:05,275 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 31 selfloop transitions, 10 changer transitions 0/383 dead transitions. [2022-11-21 16:33:05,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 383 transitions, 1686 flow [2022-11-21 16:33:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:33:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:33:05,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1684 transitions. [2022-11-21 16:33:05,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743509865005192 [2022-11-21 16:33:05,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1684 transitions. [2022-11-21 16:33:05,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1684 transitions. [2022-11-21 16:33:05,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:05,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1684 transitions. [2022-11-21 16:33:05,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 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 16:33:05,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 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 16:33:05,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 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 16:33:05,292 INFO L175 Difference]: Start difference. First operand has 312 places, 377 transitions, 1593 flow. Second operand 6 states and 1684 transitions. [2022-11-21 16:33:05,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 383 transitions, 1686 flow [2022-11-21 16:33:05,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 383 transitions, 1598 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:33:05,327 INFO L231 Difference]: Finished difference. Result has 309 places, 375 transitions, 1516 flow [2022-11-21 16:33:05,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1516, PETRI_PLACES=309, PETRI_TRANSITIONS=375} [2022-11-21 16:33:05,329 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-21 16:33:05,329 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 375 transitions, 1516 flow [2022-11-21 16:33:05,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 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 16:33:05,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:05,330 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:33:05,331 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1120811675, now seen corresponding path program 1 times [2022-11-21 16:33:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:05,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120316600] [2022-11-21 16:33:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120316600] [2022-11-21 16:33:05,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120316600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:05,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890238292] [2022-11-21 16:33:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:05,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:05,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:05,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:05,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:33:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:05,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:05,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:05,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:05,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890238292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:05,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:05,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:33:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31543856] [2022-11-21 16:33:05,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:33:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:33:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:33:05,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-21 16:33:05,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 375 transitions, 1516 flow. Second operand has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 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 16:33:05,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:05,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-21 16:33:05,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:08,237 INFO L130 PetriNetUnfolder]: 1829/7089 cut-off events. [2022-11-21 16:33:08,238 INFO L131 PetriNetUnfolder]: For 2002/2062 co-relation queries the response was YES. [2022-11-21 16:33:08,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 7089 events. 1829/7089 cut-off events. For 2002/2062 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 70999 event pairs, 256 based on Foata normal form. 141/6583 useless extension candidates. Maximal degree in co-relation 14591. Up to 1045 conditions per place. [2022-11-21 16:33:08,323 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 78 selfloop transitions, 18 changer transitions 0/450 dead transitions. [2022-11-21 16:33:08,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 450 transitions, 1932 flow [2022-11-21 16:33:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:33:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:33:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5193 transitions. [2022-11-21 16:33:08,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8987538940809969 [2022-11-21 16:33:08,332 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5193 transitions. [2022-11-21 16:33:08,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5193 transitions. [2022-11-21 16:33:08,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:08,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5193 transitions. [2022-11-21 16:33:08,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 288.5) internal successors, (5193), 18 states have internal predecessors, (5193), 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 16:33:08,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 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 16:33:08,354 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 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 16:33:08,354 INFO L175 Difference]: Start difference. First operand has 309 places, 375 transitions, 1516 flow. Second operand 18 states and 5193 transitions. [2022-11-21 16:33:08,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 450 transitions, 1932 flow [2022-11-21 16:33:08,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 450 transitions, 1912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:33:08,368 INFO L231 Difference]: Finished difference. Result has 325 places, 387 transitions, 1602 flow [2022-11-21 16:33:08,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1602, PETRI_PLACES=325, PETRI_TRANSITIONS=387} [2022-11-21 16:33:08,370 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 56 predicate places. [2022-11-21 16:33:08,370 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 387 transitions, 1602 flow [2022-11-21 16:33:08,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 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 16:33:08,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:08,371 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:08,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:08,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:08,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash 385424369, now seen corresponding path program 1 times [2022-11-21 16:33:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:08,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253510612] [2022-11-21 16:33:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:08,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253510612] [2022-11-21 16:33:08,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253510612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:08,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680775304] [2022-11-21 16:33:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:08,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:08,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:33:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:08,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:08,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:08,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:08,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680775304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:08,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:08,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:33:08,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115740987] [2022-11-21 16:33:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:08,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:08,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:08,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-21 16:33:08,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 387 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 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 16:33:08,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:08,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-21 16:33:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:11,124 INFO L130 PetriNetUnfolder]: 1714/7059 cut-off events. [2022-11-21 16:33:11,124 INFO L131 PetriNetUnfolder]: For 3616/3700 co-relation queries the response was YES. [2022-11-21 16:33:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15306 conditions, 7059 events. 1714/7059 cut-off events. For 3616/3700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 70924 event pairs, 160 based on Foata normal form. 192/6622 useless extension candidates. Maximal degree in co-relation 15233. Up to 1924 conditions per place. [2022-11-21 16:33:11,195 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 36 selfloop transitions, 11 changer transitions 0/401 dead transitions. [2022-11-21 16:33:11,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 401 transitions, 1723 flow [2022-11-21 16:33:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2022-11-21 16:33:11,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989764129951046 [2022-11-21 16:33:11,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2022-11-21 16:33:11,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2022-11-21 16:33:11,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:11,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2022-11-21 16:33:11,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 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 16:33:11,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:33:11,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:33:11,208 INFO L175 Difference]: Start difference. First operand has 325 places, 387 transitions, 1602 flow. Second operand 7 states and 2020 transitions. [2022-11-21 16:33:11,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 401 transitions, 1723 flow [2022-11-21 16:33:11,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 401 transitions, 1691 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 16:33:11,227 INFO L231 Difference]: Finished difference. Result has 321 places, 383 transitions, 1565 flow [2022-11-21 16:33:11,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=321, PETRI_TRANSITIONS=383} [2022-11-21 16:33:11,228 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 52 predicate places. [2022-11-21 16:33:11,228 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 383 transitions, 1565 flow [2022-11-21 16:33:11,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 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 16:33:11,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:11,229 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:11,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 16:33:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:33:11,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1869170925, now seen corresponding path program 1 times [2022-11-21 16:33:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:11,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111165900] [2022-11-21 16:33:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:33:11,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:11,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111165900] [2022-11-21 16:33:11,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111165900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:11,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472852335] [2022-11-21 16:33:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:11,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:11,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:33:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:11,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:33:11,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:33:12,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:33:12,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472852335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:12,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:12,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-21 16:33:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017661030] [2022-11-21 16:33:12,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:33:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:33:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:33:12,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 321 [2022-11-21 16:33:12,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 383 transitions, 1565 flow. Second operand has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 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 16:33:12,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:12,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 321 [2022-11-21 16:33:12,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:17,180 INFO L130 PetriNetUnfolder]: 1540/9972 cut-off events. [2022-11-21 16:33:17,181 INFO L131 PetriNetUnfolder]: For 3573/15892 co-relation queries the response was YES. [2022-11-21 16:33:17,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 9972 events. 1540/9972 cut-off events. For 3573/15892 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 104933 event pairs, 335 based on Foata normal form. 279/9723 useless extension candidates. Maximal degree in co-relation 18437. Up to 596 conditions per place. [2022-11-21 16:33:17,300 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 382 selfloop transitions, 154 changer transitions 0/718 dead transitions. [2022-11-21 16:33:17,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 718 transitions, 3926 flow [2022-11-21 16:33:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 16:33:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-21 16:33:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7927 transitions. [2022-11-21 16:33:17,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6859640013845621 [2022-11-21 16:33:17,315 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7927 transitions. [2022-11-21 16:33:17,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7927 transitions. [2022-11-21 16:33:17,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:17,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7927 transitions. [2022-11-21 16:33:17,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 220.19444444444446) internal successors, (7927), 36 states have internal predecessors, (7927), 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 16:33:17,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 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 16:33:17,358 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 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 16:33:17,359 INFO L175 Difference]: Start difference. First operand has 321 places, 383 transitions, 1565 flow. Second operand 36 states and 7927 transitions. [2022-11-21 16:33:17,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 718 transitions, 3926 flow [2022-11-21 16:33:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 718 transitions, 3912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:33:17,390 INFO L231 Difference]: Finished difference. Result has 360 places, 457 transitions, 2448 flow [2022-11-21 16:33:17,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2448, PETRI_PLACES=360, PETRI_TRANSITIONS=457} [2022-11-21 16:33:17,391 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 91 predicate places. [2022-11-21 16:33:17,391 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 457 transitions, 2448 flow [2022-11-21 16:33:17,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 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 16:33:17,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:17,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:17,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:17,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 16:33:17,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1539703867, now seen corresponding path program 1 times [2022-11-21 16:33:17,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:17,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148636738] [2022-11-21 16:33:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:17,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:33:17,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:17,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148636738] [2022-11-21 16:33:17,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148636738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:17,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570685478] [2022-11-21 16:33:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:17,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:17,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:17,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:17,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:33:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:18,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:18,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:33:18,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:18,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570685478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:18,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:18,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-21 16:33:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485436527] [2022-11-21 16:33:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:18,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:33:18,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 321 [2022-11-21 16:33:18,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 457 transitions, 2448 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 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 16:33:18,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:18,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 321 [2022-11-21 16:33:18,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:21,596 INFO L130 PetriNetUnfolder]: 2743/11312 cut-off events. [2022-11-21 16:33:21,596 INFO L131 PetriNetUnfolder]: For 8085/18935 co-relation queries the response was YES. [2022-11-21 16:33:21,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22496 conditions, 11312 events. 2743/11312 cut-off events. For 8085/18935 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 126761 event pairs, 548 based on Foata normal form. 330/10259 useless extension candidates. Maximal degree in co-relation 22297. Up to 1884 conditions per place. [2022-11-21 16:33:21,858 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 57 selfloop transitions, 15 changer transitions 6/489 dead transitions. [2022-11-21 16:33:21,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 489 transitions, 2744 flow [2022-11-21 16:33:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1931 transitions. [2022-11-21 16:33:21,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593680462839342 [2022-11-21 16:33:21,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1931 transitions. [2022-11-21 16:33:21,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1931 transitions. [2022-11-21 16:33:21,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:21,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1931 transitions. [2022-11-21 16:33:21,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.85714285714283) internal successors, (1931), 7 states have internal predecessors, (1931), 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 16:33:21,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:33:21,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:33:21,880 INFO L175 Difference]: Start difference. First operand has 360 places, 457 transitions, 2448 flow. Second operand 7 states and 1931 transitions. [2022-11-21 16:33:21,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 489 transitions, 2744 flow [2022-11-21 16:33:21,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 489 transitions, 2646 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-21 16:33:21,911 INFO L231 Difference]: Finished difference. Result has 355 places, 453 transitions, 2367 flow [2022-11-21 16:33:21,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2367, PETRI_PLACES=355, PETRI_TRANSITIONS=453} [2022-11-21 16:33:21,917 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 86 predicate places. [2022-11-21 16:33:21,917 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 453 transitions, 2367 flow [2022-11-21 16:33:21,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 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 16:33:21,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:21,918 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:21,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:22,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:22,124 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1029650568, now seen corresponding path program 2 times [2022-11-21 16:33:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:22,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927092248] [2022-11-21 16:33:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:33:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:22,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927092248] [2022-11-21 16:33:22,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927092248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:22,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325540649] [2022-11-21 16:33:22,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:33:22,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:22,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:22,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:33:22,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:33:22,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:33:22,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:22,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 16:33:22,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 16:33:23,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325540649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:23,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:23,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-21 16:33:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539308838] [2022-11-21 16:33:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:23,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:33:23,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:23,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:33:23,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:33:23,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-21 16:33:23,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 453 transitions, 2367 flow. Second operand has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 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 16:33:23,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:23,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-21 16:33:23,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:29,761 INFO L130 PetriNetUnfolder]: 8177/24699 cut-off events. [2022-11-21 16:33:29,761 INFO L131 PetriNetUnfolder]: For 10467/10999 co-relation queries the response was YES. [2022-11-21 16:33:29,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50295 conditions, 24699 events. 8177/24699 cut-off events. For 10467/10999 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 282848 event pairs, 807 based on Foata normal form. 251/22530 useless extension candidates. Maximal degree in co-relation 45490. Up to 3654 conditions per place. [2022-11-21 16:33:29,975 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 105 selfloop transitions, 23 changer transitions 105/546 dead transitions. [2022-11-21 16:33:29,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 546 transitions, 2877 flow [2022-11-21 16:33:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:33:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 16:33:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6202 transitions. [2022-11-21 16:33:29,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782214670065137 [2022-11-21 16:33:29,986 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6202 transitions. [2022-11-21 16:33:29,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6202 transitions. [2022-11-21 16:33:29,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:29,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6202 transitions. [2022-11-21 16:33:30,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 281.90909090909093) internal successors, (6202), 22 states have internal predecessors, (6202), 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 16:33:30,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 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 16:33:30,017 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 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 16:33:30,017 INFO L175 Difference]: Start difference. First operand has 355 places, 453 transitions, 2367 flow. Second operand 22 states and 6202 transitions. [2022-11-21 16:33:30,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 546 transitions, 2877 flow [2022-11-21 16:33:30,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 546 transitions, 2839 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-21 16:33:30,109 INFO L231 Difference]: Finished difference. Result has 363 places, 352 transitions, 1578 flow [2022-11-21 16:33:30,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1578, PETRI_PLACES=363, PETRI_TRANSITIONS=352} [2022-11-21 16:33:30,111 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 94 predicate places. [2022-11-21 16:33:30,111 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 352 transitions, 1578 flow [2022-11-21 16:33:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 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 16:33:30,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:30,112 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:30,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:30,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:33:30,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash 778937767, now seen corresponding path program 1 times [2022-11-21 16:33:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:30,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256662084] [2022-11-21 16:33:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-21 16:33:30,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:30,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256662084] [2022-11-21 16:33:30,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256662084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:30,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190802569] [2022-11-21 16:33:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:30,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:30,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:33:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:30,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:30,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-21 16:33:30,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:33:30,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190802569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:33:30,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:33:30,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:33:30,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649876950] [2022-11-21 16:33:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:33:30,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:33:30,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:33:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:33:30,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-21 16:33:30,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 352 transitions, 1578 flow. Second operand has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 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 16:33:30,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:30,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-21 16:33:30,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:31,584 INFO L130 PetriNetUnfolder]: 351/2135 cut-off events. [2022-11-21 16:33:31,584 INFO L131 PetriNetUnfolder]: For 1200/1200 co-relation queries the response was YES. [2022-11-21 16:33:31,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2135 events. 351/2135 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14068 event pairs, 0 based on Foata normal form. 30/2115 useless extension candidates. Maximal degree in co-relation 4049. Up to 325 conditions per place. [2022-11-21 16:33:31,612 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 33 selfloop transitions, 8 changer transitions 0/367 dead transitions. [2022-11-21 16:33:31,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 1704 flow [2022-11-21 16:33:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:33:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:33:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2022-11-21 16:33:31,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985313751668892 [2022-11-21 16:33:31,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2022-11-21 16:33:31,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2022-11-21 16:33:31,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:31,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2022-11-21 16:33:31,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 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 16:33:31,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:33:31,623 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 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 16:33:31,623 INFO L175 Difference]: Start difference. First operand has 363 places, 352 transitions, 1578 flow. Second operand 7 states and 2019 transitions. [2022-11-21 16:33:31,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 1704 flow [2022-11-21 16:33:31,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 367 transitions, 1401 flow, removed 15 selfloop flow, removed 29 redundant places. [2022-11-21 16:33:31,636 INFO L231 Difference]: Finished difference. Result has 309 places, 350 transitions, 1285 flow [2022-11-21 16:33:31,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1285, PETRI_PLACES=309, PETRI_TRANSITIONS=350} [2022-11-21 16:33:31,637 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-21 16:33:31,637 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 350 transitions, 1285 flow [2022-11-21 16:33:31,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 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 16:33:31,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:33:31,638 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:31,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:31,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:31,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-21 16:33:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:33:31,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1268679090, now seen corresponding path program 2 times [2022-11-21 16:33:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:33:31,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288523210] [2022-11-21 16:33:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:33:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:33:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:33:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-21 16:33:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:33:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288523210] [2022-11-21 16:33:32,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288523210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:33:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891546876] [2022-11-21 16:33:32,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:33:32,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:33:32,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:33:32,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:33:32,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:33:32,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:33:32,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:33:32,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:33:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-21 16:33:32,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:33:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-21 16:33:33,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891546876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:33:33,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:33:33,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-21 16:33:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652177926] [2022-11-21 16:33:33,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:33:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:33:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:33:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:33:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:33:33,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 321 [2022-11-21 16:33:33,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 350 transitions, 1285 flow. Second operand has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 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 16:33:33,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:33:33,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 321 [2022-11-21 16:33:33,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:33:36,057 INFO L130 PetriNetUnfolder]: 1069/5928 cut-off events. [2022-11-21 16:33:36,057 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-21 16:33:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 5928 events. 1069/5928 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 52850 event pairs, 122 based on Foata normal form. 45/5623 useless extension candidates. Maximal degree in co-relation 9856. Up to 468 conditions per place. [2022-11-21 16:33:36,114 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 0 selfloop transitions, 0 changer transitions 602/602 dead transitions. [2022-11-21 16:33:36,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 602 transitions, 3153 flow [2022-11-21 16:33:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 16:33:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-21 16:33:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8156 transitions. [2022-11-21 16:33:36,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6686342023282505 [2022-11-21 16:33:36,125 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8156 transitions. [2022-11-21 16:33:36,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8156 transitions. [2022-11-21 16:33:36,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:33:36,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8156 transitions. [2022-11-21 16:33:36,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 214.6315789473684) internal successors, (8156), 38 states have internal predecessors, (8156), 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 16:33:36,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 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 16:33:36,153 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 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 16:33:36,153 INFO L175 Difference]: Start difference. First operand has 309 places, 350 transitions, 1285 flow. Second operand 38 states and 8156 transitions. [2022-11-21 16:33:36,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 602 transitions, 3153 flow [2022-11-21 16:33:36,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 602 transitions, 3127 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-21 16:33:36,168 INFO L231 Difference]: Finished difference. Result has 339 places, 0 transitions, 0 flow [2022-11-21 16:33:36,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=0, PETRI_PLACES=339, PETRI_TRANSITIONS=0} [2022-11-21 16:33:36,169 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 70 predicate places. [2022-11-21 16:33:36,170 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 0 transitions, 0 flow [2022-11-21 16:33:36,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 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 16:33:36,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2022-11-21 16:33:36,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-21 16:33:36,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-21 16:33:36,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-21 16:33:36,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-21 16:33:36,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-21 16:33:36,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-21 16:33:36,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-21 16:33:36,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-21 16:33:36,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-21 16:33:36,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-21 16:33:36,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-21 16:33:36,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-21 16:33:36,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-21 16:33:36,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2022-11-21 16:33:36,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2022-11-21 16:33:36,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2022-11-21 16:33:36,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-21 16:33:36,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-21 16:33:36,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-21 16:33:36,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-21 16:33:36,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-21 16:33:36,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-21 16:33:36,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:33:36,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:33:36,383 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:33:36,389 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:33:36,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:33:36,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:33:36 BasicIcfg [2022-11-21 16:33:36,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:33:36,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:33:36,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:33:36,395 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:33:36,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:32:50" (3/4) ... [2022-11-21 16:33:36,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:33:36,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:33:36,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:33:36,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 16:33:36,408 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2022-11-21 16:33:36,409 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:33:36,409 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:33:36,410 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:33:36,456 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:33:36,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:33:36,457 INFO L158 Benchmark]: Toolchain (without parser) took 47508.61ms. Allocated memory was 167.8MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 125.2MB in the beginning and 7.1GB in the end (delta: -6.9GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-21 16:33:36,457 INFO L158 Benchmark]: CDTParser took 16.18ms. Allocated memory is still 119.5MB. Free memory was 61.4MB in the beginning and 86.1MB in the end (delta: -24.7MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-21 16:33:36,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.48ms. Allocated memory is still 167.8MB. Free memory was 124.6MB in the beginning and 113.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:33:36,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.67ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:33:36,458 INFO L158 Benchmark]: Boogie Preprocessor took 68.74ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 108.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:33:36,459 INFO L158 Benchmark]: RCFGBuilder took 875.29ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 130.8MB in the end (delta: -22.1MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-11-21 16:33:36,459 INFO L158 Benchmark]: TraceAbstraction took 46120.15ms. Allocated memory was 167.8MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 129.8MB in the beginning and 7.1GB in the end (delta: -6.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2022-11-21 16:33:36,459 INFO L158 Benchmark]: Witness Printer took 61.68ms. Allocated memory is still 8.4GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:33:36,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 16.18ms. Allocated memory is still 119.5MB. Free memory was 61.4MB in the beginning and 86.1MB in the end (delta: -24.7MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.48ms. Allocated memory is still 167.8MB. Free memory was 124.6MB in the beginning and 113.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.67ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.74ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 108.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 875.29ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 130.8MB in the end (delta: -22.1MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 46120.15ms. Allocated memory was 167.8MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 129.8MB in the beginning and 7.1GB in the end (delta: -6.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 61.68ms. Allocated memory is still 8.4GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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, 351 locations, 23 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: 45.9s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 33.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5696 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5696 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 677 mSDsCounter, 492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4776 IncrementalHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 492 mSolverCounterUnsat, 181 mSDtfsCounter, 4776 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2998 GetRequests, 2679 SyntacticMatches, 12 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2448occurred in iteration=12, InterpolantAutomatonStates: 232, 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: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 4270 NumberOfCodeBlocks, 4108 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 5195 ConstructedInterpolants, 0 QuantifiedInterpolants, 10977 SizeOfPredicates, 46 NumberOfNonLiveVariables, 3686 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 541/926 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:33:36,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36d606c6-b42b-4353-911e-1413867e4d61/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