./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/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_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/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_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/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 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- 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 16:20:08,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:20:08,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:20:08,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:20:08,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:20:08,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:20:08,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:20:08,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:20:08,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:20:08,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:20:08,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:20:08,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:20:08,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:20:08,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:20:08,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:20:08,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:20:08,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:20:08,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:20:08,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:20:08,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:20:08,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:20:08,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:20:08,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:20:08,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:20:08,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:20:08,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:20:08,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:20:08,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:20:08,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:20:08,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:20:08,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:20:08,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:20:08,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:20:08,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:20:08,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:20:08,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:20:08,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:20:08,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:20:08,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:20:08,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:20:08,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:20:08,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:20:08,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:20:08,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:20:08,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:20:08,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:20:08,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:20:08,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:20:08,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:20:08,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:20:08,383 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:20:08,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:20:08,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:20:08,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:20:08,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:20:08,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:20:08,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:20:08,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:20:08,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:20:08,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:20:08,386 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:20:08,386 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:20:08,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:20:08,387 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:20:08,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:20:08,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:20:08,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:20:08,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:20:08,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:20:08,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:20:08,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:20:08,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:20:08,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:20:08,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:20:08,390 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:20:08,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:20:08,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:20:08,391 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_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-11-21 16:20:08,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:20:08,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:20:08,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:20:08,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:20:08,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:20:08,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-21 16:20:11,880 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:20:12,094 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:20:12,097 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-21 16:20:12,107 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/data/06b9ab002/da4fe98ea56f442c984a12f61d42440e/FLAG749545c9a [2022-11-21 16:20:12,125 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/data/06b9ab002/da4fe98ea56f442c984a12f61d42440e [2022-11-21 16:20:12,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:20:12,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:20:12,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:20:12,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:20:12,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:20:12,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538328b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12, skipping insertion in model container [2022-11-21 16:20:12,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:20:12,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:20:12,384 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_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-21 16:20:12,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:20:12,417 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:20:12,445 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_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-21 16:20:12,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:20:12,461 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:20:12,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12 WrapperNode [2022-11-21 16:20:12,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:20:12,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:20:12,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:20:12,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:20:12,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,511 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 355 [2022-11-21 16:20:12,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:20:12,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:20:12,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:20:12,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:20:12,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:20:12,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:20:12,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:20:12,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:20:12,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (1/1) ... [2022-11-21 16:20:12,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:20:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:12,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:20:12,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:20:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:20:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:20:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:20:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:20:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:20:12,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:20:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:20:12,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:20:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:20:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:20:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:20:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:20:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:20:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:20:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:20:12,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:20:12,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:20:12,659 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 16:20:12,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:20:12,824 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:20:13,548 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:20:13,896 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:20:13,896 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 16:20:13,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:20:13 BoogieIcfgContainer [2022-11-21 16:20:13,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:20:13,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:20:13,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:20:13,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:20:13,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:20:12" (1/3) ... [2022-11-21 16:20:13,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cb0923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:20:13, skipping insertion in model container [2022-11-21 16:20:13,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:12" (2/3) ... [2022-11-21 16:20:13,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cb0923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:20:13, skipping insertion in model container [2022-11-21 16:20:13,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:20:13" (3/3) ... [2022-11-21 16:20:13,910 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-11-21 16:20:13,917 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:20:13,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:20:13,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-21 16:20:13,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:20:14,067 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:20:14,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 281 transitions, 586 flow [2022-11-21 16:20:14,281 INFO L130 PetriNetUnfolder]: 19/278 cut-off events. [2022-11-21 16:20:14,281 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:20:14,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 19/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 238. Up to 2 conditions per place. [2022-11-21 16:20:14,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 281 transitions, 586 flow [2022-11-21 16:20:14,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 257 transitions, 529 flow [2022-11-21 16:20:14,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:20:14,312 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;@7841028c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:20:14,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-21 16:20:14,324 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-21 16:20:14,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:20:14,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:14,326 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] [2022-11-21 16:20:14,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash -139420048, now seen corresponding path program 1 times [2022-11-21 16:20:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:14,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285456715] [2022-11-21 16:20:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:14,843 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 16:20:14,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:14,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285456715] [2022-11-21 16:20:14,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285456715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:14,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:20:14,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:20:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060572180] [2022-11-21 16:20:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:14,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:20:14,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:20:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:20:14,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-21 16:20:14,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 257 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 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 16:20:14,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:14,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-21 16:20:14,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:15,805 INFO L130 PetriNetUnfolder]: 735/1433 cut-off events. [2022-11-21 16:20:15,805 INFO L131 PetriNetUnfolder]: For 206/210 co-relation queries the response was YES. [2022-11-21 16:20:15,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1433 events. 735/1433 cut-off events. For 206/210 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6617 event pairs, 526 based on Foata normal form. 210/1093 useless extension candidates. Maximal degree in co-relation 1164. Up to 592 conditions per place. [2022-11-21 16:20:15,821 INFO L137 encePairwiseOnDemand]: 241/281 looper letters, 90 selfloop transitions, 14 changer transitions 6/284 dead transitions. [2022-11-21 16:20:15,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 284 transitions, 806 flow [2022-11-21 16:20:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:20:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:20:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1149 transitions. [2022-11-21 16:20:15,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177935943060498 [2022-11-21 16:20:15,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1149 transitions. [2022-11-21 16:20:15,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1149 transitions. [2022-11-21 16:20:15,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:15,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1149 transitions. [2022-11-21 16:20:15,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.8) internal successors, (1149), 5 states have internal predecessors, (1149), 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 16:20:15,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 16:20:15,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 16:20:15,876 INFO L175 Difference]: Start difference. First operand has 249 places, 257 transitions, 529 flow. Second operand 5 states and 1149 transitions. [2022-11-21 16:20:15,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 284 transitions, 806 flow [2022-11-21 16:20:15,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 788 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:20:15,890 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 572 flow [2022-11-21 16:20:15,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2022-11-21 16:20:15,898 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -6 predicate places. [2022-11-21 16:20:15,898 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 572 flow [2022-11-21 16:20:15,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 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 16:20:15,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:15,900 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:15,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:20:15,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash 145273245, now seen corresponding path program 1 times [2022-11-21 16:20:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:15,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584426490] [2022-11-21 16:20:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:15,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:16,186 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 16:20:16,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584426490] [2022-11-21 16:20:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584426490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074170054] [2022-11-21 16:20:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:16,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:16,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:16,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:16,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:20:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:16,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:20:16,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:16,448 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 16:20:16,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:16,525 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 16:20:16,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074170054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:16,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:16,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:20:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184333611] [2022-11-21 16:20:16,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:20:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:20:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:20:16,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-21 16:20:16,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 572 flow. Second operand has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 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 16:20:16,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:16,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-21 16:20:16,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:18,379 INFO L130 PetriNetUnfolder]: 1836/3425 cut-off events. [2022-11-21 16:20:18,380 INFO L131 PetriNetUnfolder]: For 143/153 co-relation queries the response was YES. [2022-11-21 16:20:18,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 3425 events. 1836/3425 cut-off events. For 143/153 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18828 event pairs, 1315 based on Foata normal form. 9/2089 useless extension candidates. Maximal degree in co-relation 5008. Up to 583 conditions per place. [2022-11-21 16:20:18,421 INFO L137 encePairwiseOnDemand]: 258/281 looper letters, 189 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-21 16:20:18,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 425 transitions, 1542 flow [2022-11-21 16:20:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:20:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:20:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3878 transitions. [2022-11-21 16:20:18,465 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7667062079873468 [2022-11-21 16:20:18,465 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3878 transitions. [2022-11-21 16:20:18,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3878 transitions. [2022-11-21 16:20:18,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:18,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3878 transitions. [2022-11-21 16:20:18,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 215.44444444444446) internal successors, (3878), 18 states have internal predecessors, (3878), 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 16:20:18,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 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 16:20:18,491 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 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 16:20:18,491 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 572 flow. Second operand 18 states and 3878 transitions. [2022-11-21 16:20:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 425 transitions, 1542 flow [2022-11-21 16:20:18,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 425 transitions, 1534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:20:18,506 INFO L231 Difference]: Finished difference. Result has 257 places, 284 transitions, 934 flow [2022-11-21 16:20:18,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=257, PETRI_TRANSITIONS=284} [2022-11-21 16:20:18,507 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 8 predicate places. [2022-11-21 16:20:18,508 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 284 transitions, 934 flow [2022-11-21 16:20:18,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 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 16:20:18,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:18,510 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:18,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:18,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:18,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 208504140, now seen corresponding path program 1 times [2022-11-21 16:20:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:18,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504485000] [2022-11-21 16:20:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:18,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:18,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504485000] [2022-11-21 16:20:18,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504485000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:18,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573586426] [2022-11-21 16:20:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:18,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:18,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:18,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:18,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:20:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:18,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:20:18,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:19,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:19,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573586426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:19,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:19,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:20:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168075085] [2022-11-21 16:20:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:19,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:20:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:20:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:20:19,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-21 16:20:19,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 284 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 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 16:20:19,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:19,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-21 16:20:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:20,496 INFO L130 PetriNetUnfolder]: 1836/3413 cut-off events. [2022-11-21 16:20:20,497 INFO L131 PetriNetUnfolder]: For 295/305 co-relation queries the response was YES. [2022-11-21 16:20:20,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 3413 events. 1836/3413 cut-off events. For 295/305 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18608 event pairs, 1315 based on Foata normal form. 12/2080 useless extension candidates. Maximal degree in co-relation 5431. Up to 2260 conditions per place. [2022-11-21 16:20:20,529 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 91 selfloop transitions, 43 changer transitions 0/308 dead transitions. [2022-11-21 16:20:20,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 308 transitions, 1205 flow [2022-11-21 16:20:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:20:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:20:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1511 transitions. [2022-11-21 16:20:20,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.768174885612608 [2022-11-21 16:20:20,535 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1511 transitions. [2022-11-21 16:20:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1511 transitions. [2022-11-21 16:20:20,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:20,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1511 transitions. [2022-11-21 16:20:20,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.85714285714286) internal successors, (1511), 7 states have internal predecessors, (1511), 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 16:20:20,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 16:20:20,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 16:20:20,548 INFO L175 Difference]: Start difference. First operand has 257 places, 284 transitions, 934 flow. Second operand 7 states and 1511 transitions. [2022-11-21 16:20:20,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 308 transitions, 1205 flow [2022-11-21 16:20:20,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 308 transitions, 1089 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-21 16:20:20,564 INFO L231 Difference]: Finished difference. Result has 251 places, 272 transitions, 823 flow [2022-11-21 16:20:20,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=251, PETRI_TRANSITIONS=272} [2022-11-21 16:20:20,566 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-11-21 16:20:20,566 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 272 transitions, 823 flow [2022-11-21 16:20:20,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 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 16:20:20,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:20,570 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:20,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:20,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:20,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:20,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1853733808, now seen corresponding path program 2 times [2022-11-21 16:20:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:20,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976151446] [2022-11-21 16:20:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:21,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976151446] [2022-11-21 16:20:21,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976151446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:21,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308935790] [2022-11-21 16:20:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:20:21,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:21,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:21,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:20:21,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:20:21,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:20:21,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:20:21,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:20:21,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308935790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:21,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:21,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:20:21,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266148697] [2022-11-21 16:20:21,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:20:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:20:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:20:21,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-21 16:20:21,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 272 transitions, 823 flow. Second operand has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 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 16:20:21,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:21,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-21 16:20:21,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:23,891 INFO L130 PetriNetUnfolder]: 1219/2696 cut-off events. [2022-11-21 16:20:23,892 INFO L131 PetriNetUnfolder]: For 315/322 co-relation queries the response was YES. [2022-11-21 16:20:23,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 2696 events. 1219/2696 cut-off events. For 315/322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13991 event pairs, 770 based on Foata normal form. 6/2051 useless extension candidates. Maximal degree in co-relation 3846. Up to 300 conditions per place. [2022-11-21 16:20:23,920 INFO L137 encePairwiseOnDemand]: 249/281 looper letters, 234 selfloop transitions, 97 changer transitions 0/485 dead transitions. [2022-11-21 16:20:23,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 485 transitions, 2048 flow [2022-11-21 16:20:23,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:20:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 16:20:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9234 transitions. [2022-11-21 16:20:23,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6706369380492411 [2022-11-21 16:20:23,941 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9234 transitions. [2022-11-21 16:20:23,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9234 transitions. [2022-11-21 16:20:23,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:23,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9234 transitions. [2022-11-21 16:20:23,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 188.44897959183675) internal successors, (9234), 49 states have internal predecessors, (9234), 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 16:20:23,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 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 16:20:24,005 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 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 16:20:24,012 INFO L175 Difference]: Start difference. First operand has 251 places, 272 transitions, 823 flow. Second operand 49 states and 9234 transitions. [2022-11-21 16:20:24,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 485 transitions, 2048 flow [2022-11-21 16:20:24,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 485 transitions, 1979 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:20:24,023 INFO L231 Difference]: Finished difference. Result has 293 places, 308 transitions, 1158 flow [2022-11-21 16:20:24,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1158, PETRI_PLACES=293, PETRI_TRANSITIONS=308} [2022-11-21 16:20:24,026 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 44 predicate places. [2022-11-21 16:20:24,026 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 308 transitions, 1158 flow [2022-11-21 16:20:24,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 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 16:20:24,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:24,028 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] [2022-11-21 16:20:24,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 16:20:24,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:24,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:24,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1165664909, now seen corresponding path program 1 times [2022-11-21 16:20:24,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:24,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151419679] [2022-11-21 16:20:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:24,496 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 16:20:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:24,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151419679] [2022-11-21 16:20:24,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151419679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:24,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:20:24,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:20:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018176627] [2022-11-21 16:20:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:20:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:20:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:20:24,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-21 16:20:24,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 308 transitions, 1158 flow. Second operand has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 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 16:20:24,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:24,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-21 16:20:24,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:25,267 INFO L130 PetriNetUnfolder]: 1059/2462 cut-off events. [2022-11-21 16:20:25,267 INFO L131 PetriNetUnfolder]: For 534/541 co-relation queries the response was YES. [2022-11-21 16:20:25,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 2462 events. 1059/2462 cut-off events. For 534/541 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12555 event pairs, 668 based on Foata normal form. 16/1928 useless extension candidates. Maximal degree in co-relation 4398. Up to 1607 conditions per place. [2022-11-21 16:20:25,283 INFO L137 encePairwiseOnDemand]: 270/281 looper letters, 124 selfloop transitions, 7 changer transitions 0/319 dead transitions. [2022-11-21 16:20:25,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 319 transitions, 1448 flow [2022-11-21 16:20:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:20:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:20:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1466 transitions. [2022-11-21 16:20:25,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7452974072191154 [2022-11-21 16:20:25,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1466 transitions. [2022-11-21 16:20:25,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1466 transitions. [2022-11-21 16:20:25,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:25,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1466 transitions. [2022-11-21 16:20:25,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.42857142857142) internal successors, (1466), 7 states have internal predecessors, (1466), 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 16:20:25,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 16:20:25,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 16:20:25,295 INFO L175 Difference]: Start difference. First operand has 293 places, 308 transitions, 1158 flow. Second operand 7 states and 1466 transitions. [2022-11-21 16:20:25,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 319 transitions, 1448 flow [2022-11-21 16:20:25,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 319 transitions, 1325 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-21 16:20:25,304 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 1058 flow [2022-11-21 16:20:25,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1058, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-21 16:20:25,307 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-11-21 16:20:25,307 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 1058 flow [2022-11-21 16:20:25,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 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 16:20:25,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:25,308 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:25,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:20:25,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1296105903, now seen corresponding path program 1 times [2022-11-21 16:20:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:25,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396976663] [2022-11-21 16:20:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:25,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:25,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396976663] [2022-11-21 16:20:25,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396976663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:25,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570528602] [2022-11-21 16:20:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:25,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:25,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:20:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:25,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:20:25,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:26,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:26,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570528602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:26,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:26,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-21 16:20:26,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359053693] [2022-11-21 16:20:26,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:26,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 16:20:26,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:26,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 16:20:26,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:20:26,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-21 16:20:26,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 1058 flow. Second operand has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 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 16:20:26,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:26,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-21 16:20:26,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:29,840 INFO L130 PetriNetUnfolder]: 2451/5453 cut-off events. [2022-11-21 16:20:29,841 INFO L131 PetriNetUnfolder]: For 1222/1237 co-relation queries the response was YES. [2022-11-21 16:20:29,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 5453 events. 2451/5453 cut-off events. For 1222/1237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 31786 event pairs, 1548 based on Foata normal form. 16/4199 useless extension candidates. Maximal degree in co-relation 11058. Up to 1121 conditions per place. [2022-11-21 16:20:29,896 INFO L137 encePairwiseOnDemand]: 262/281 looper letters, 480 selfloop transitions, 160 changer transitions 0/820 dead transitions. [2022-11-21 16:20:29,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 820 transitions, 4120 flow [2022-11-21 16:20:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 16:20:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 16:20:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9500 transitions. [2022-11-21 16:20:29,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683597541248787 [2022-11-21 16:20:29,917 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9500 transitions. [2022-11-21 16:20:29,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9500 transitions. [2022-11-21 16:20:29,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:29,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9500 transitions. [2022-11-21 16:20:29,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 215.9090909090909) internal successors, (9500), 44 states have internal predecessors, (9500), 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 16:20:29,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 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 16:20:29,971 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 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 16:20:29,971 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 1058 flow. Second operand 44 states and 9500 transitions. [2022-11-21 16:20:29,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 820 transitions, 4120 flow [2022-11-21 16:20:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 820 transitions, 4110 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:20:29,993 INFO L231 Difference]: Finished difference. Result has 333 places, 401 transitions, 2058 flow [2022-11-21 16:20:29,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2058, PETRI_PLACES=333, PETRI_TRANSITIONS=401} [2022-11-21 16:20:29,997 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-11-21 16:20:29,997 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 401 transitions, 2058 flow [2022-11-21 16:20:29,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 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 16:20:29,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:30,000 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] [2022-11-21 16:20:30,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:30,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 16:20:30,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash 788184584, now seen corresponding path program 1 times [2022-11-21 16:20:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:30,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605444584] [2022-11-21 16:20:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:30,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605444584] [2022-11-21 16:20:30,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605444584] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783747445] [2022-11-21 16:20:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:30,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:30,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:30,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:30,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:20:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:30,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:20:30,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:30,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:30,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783747445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:30,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:30,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:20:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459186130] [2022-11-21 16:20:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:30,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:20:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:20:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:20:30,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-21 16:20:30,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 401 transitions, 2058 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 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 16:20:30,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:30,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-21 16:20:30,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:31,789 INFO L130 PetriNetUnfolder]: 1457/3955 cut-off events. [2022-11-21 16:20:31,789 INFO L131 PetriNetUnfolder]: For 1324/1339 co-relation queries the response was YES. [2022-11-21 16:20:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 3955 events. 1457/3955 cut-off events. For 1324/1339 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 21963 event pairs, 792 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 7159. Up to 2230 conditions per place. [2022-11-21 16:20:31,821 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 18 selfloop transitions, 3 changer transitions 0/399 dead transitions. [2022-11-21 16:20:31,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 399 transitions, 2092 flow [2022-11-21 16:20:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:20:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:20:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2022-11-21 16:20:31,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425266903914591 [2022-11-21 16:20:31,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2022-11-21 16:20:31,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2022-11-21 16:20:31,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:31,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2022-11-21 16:20:31,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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 16:20:31,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 16:20:31,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 16:20:31,837 INFO L175 Difference]: Start difference. First operand has 333 places, 401 transitions, 2058 flow. Second operand 4 states and 947 transitions. [2022-11-21 16:20:31,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 399 transitions, 2092 flow [2022-11-21 16:20:31,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 399 transitions, 1990 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-21 16:20:31,860 INFO L231 Difference]: Finished difference. Result has 319 places, 399 transitions, 1954 flow [2022-11-21 16:20:31,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1954, PETRI_PLACES=319, PETRI_TRANSITIONS=399} [2022-11-21 16:20:31,862 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-11-21 16:20:31,863 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 399 transitions, 1954 flow [2022-11-21 16:20:31,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 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 16:20:31,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:31,864 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] [2022-11-21 16:20:31,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:32,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:32,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1531177387, now seen corresponding path program 1 times [2022-11-21 16:20:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:32,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187530692] [2022-11-21 16:20:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:32,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187530692] [2022-11-21 16:20:32,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187530692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:32,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:20:32,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:20:32,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691629490] [2022-11-21 16:20:32,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:32,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:20:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:32,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:20:32,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:20:32,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-21 16:20:32,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 399 transitions, 1954 flow. Second operand has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 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 16:20:32,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:32,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-21 16:20:32,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:33,816 INFO L130 PetriNetUnfolder]: 2092/5980 cut-off events. [2022-11-21 16:20:33,816 INFO L131 PetriNetUnfolder]: For 2170/2200 co-relation queries the response was YES. [2022-11-21 16:20:33,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 5980 events. 2092/5980 cut-off events. For 2170/2200 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 39966 event pairs, 1231 based on Foata normal form. 256/5604 useless extension candidates. Maximal degree in co-relation 11245. Up to 2308 conditions per place. [2022-11-21 16:20:33,848 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 194 selfloop transitions, 30 changer transitions 18/457 dead transitions. [2022-11-21 16:20:33,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 457 transitions, 2737 flow [2022-11-21 16:20:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:20:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:20:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1876 transitions. [2022-11-21 16:20:33,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.741795175958877 [2022-11-21 16:20:33,852 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1876 transitions. [2022-11-21 16:20:33,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1876 transitions. [2022-11-21 16:20:33,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:33,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1876 transitions. [2022-11-21 16:20:33,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.44444444444446) internal successors, (1876), 9 states have internal predecessors, (1876), 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 16:20:33,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 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 16:20:33,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 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 16:20:33,862 INFO L175 Difference]: Start difference. First operand has 319 places, 399 transitions, 1954 flow. Second operand 9 states and 1876 transitions. [2022-11-21 16:20:33,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 457 transitions, 2737 flow [2022-11-21 16:20:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 457 transitions, 2731 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:20:33,883 INFO L231 Difference]: Finished difference. Result has 325 places, 400 transitions, 2021 flow [2022-11-21 16:20:33,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2021, PETRI_PLACES=325, PETRI_TRANSITIONS=400} [2022-11-21 16:20:33,884 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 76 predicate places. [2022-11-21 16:20:33,884 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 400 transitions, 2021 flow [2022-11-21 16:20:33,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 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 16:20:33,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:33,885 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 16:20:33,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:20:33,886 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1990779453, now seen corresponding path program 1 times [2022-11-21 16:20:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:33,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6851385] [2022-11-21 16:20:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:33,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:34,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6851385] [2022-11-21 16:20:34,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6851385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218536133] [2022-11-21 16:20:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:34,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:34,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:20:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:34,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:20:34,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:20:34,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:34,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218536133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:34,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:34,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:20:34,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857827893] [2022-11-21 16:20:34,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:20:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:34,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:20:34,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:20:34,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-21 16:20:34,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 400 transitions, 2021 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 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 16:20:34,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:34,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-21 16:20:34,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:35,766 INFO L130 PetriNetUnfolder]: 1557/5161 cut-off events. [2022-11-21 16:20:35,766 INFO L131 PetriNetUnfolder]: For 1751/1781 co-relation queries the response was YES. [2022-11-21 16:20:35,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5161 events. 1557/5161 cut-off events. For 1751/1781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 34942 event pairs, 878 based on Foata normal form. 0/4841 useless extension candidates. Maximal degree in co-relation 9376. Up to 2534 conditions per place. [2022-11-21 16:20:35,784 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 9 selfloop transitions, 3 changer transitions 69/398 dead transitions. [2022-11-21 16:20:35,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 398 transitions, 2063 flow [2022-11-21 16:20:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:20:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:20:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2022-11-21 16:20:35,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8407473309608541 [2022-11-21 16:20:35,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2022-11-21 16:20:35,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2022-11-21 16:20:35,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:35,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2022-11-21 16:20:35,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 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 16:20:35,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 16:20:35,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 16:20:35,791 INFO L175 Difference]: Start difference. First operand has 325 places, 400 transitions, 2021 flow. Second operand 4 states and 945 transitions. [2022-11-21 16:20:35,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 398 transitions, 2063 flow [2022-11-21 16:20:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 398 transitions, 2029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:20:35,812 INFO L231 Difference]: Finished difference. Result has 323 places, 329 transitions, 1816 flow [2022-11-21 16:20:35,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1816, PETRI_PLACES=323, PETRI_TRANSITIONS=329} [2022-11-21 16:20:35,813 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 74 predicate places. [2022-11-21 16:20:35,813 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 329 transitions, 1816 flow [2022-11-21 16:20:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 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 16:20:35,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:35,814 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:35,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:36,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash 493589073, now seen corresponding path program 2 times [2022-11-21 16:20:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651370518] [2022-11-21 16:20:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:37,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:37,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651370518] [2022-11-21 16:20:37,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651370518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:37,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396051040] [2022-11-21 16:20:37,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:20:37,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:37,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:37,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:20:37,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:20:37,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:37,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:20:37,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-21 16:20:37,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-21 16:20:38,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396051040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:38,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:38,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-21 16:20:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347623611] [2022-11-21 16:20:38,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:38,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-21 16:20:38,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-21 16:20:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:20:38,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-21 16:20:38,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 329 transitions, 1816 flow. Second operand has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 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 16:20:38,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:38,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-21 16:20:38,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:42,994 INFO L130 PetriNetUnfolder]: 35/1291 cut-off events. [2022-11-21 16:20:42,994 INFO L131 PetriNetUnfolder]: For 2099/2099 co-relation queries the response was YES. [2022-11-21 16:20:42,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 1291 events. 35/1291 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4949 event pairs, 0 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 2967. Up to 112 conditions per place. [2022-11-21 16:20:43,000 INFO L137 encePairwiseOnDemand]: 255/281 looper letters, 253 selfloop transitions, 269 changer transitions 0/627 dead transitions. [2022-11-21 16:20:43,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 627 transitions, 3977 flow [2022-11-21 16:20:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-21 16:20:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-21 16:20:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 24961 transitions. [2022-11-21 16:20:43,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6579939369974958 [2022-11-21 16:20:43,042 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 24961 transitions. [2022-11-21 16:20:43,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 24961 transitions. [2022-11-21 16:20:43,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:43,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 24961 transitions. [2022-11-21 16:20:43,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 184.8962962962963) internal successors, (24961), 135 states have internal predecessors, (24961), 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 16:20:43,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 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 16:20:43,165 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 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 16:20:43,166 INFO L175 Difference]: Start difference. First operand has 323 places, 329 transitions, 1816 flow. Second operand 135 states and 24961 transitions. [2022-11-21 16:20:43,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 627 transitions, 3977 flow [2022-11-21 16:20:43,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 627 transitions, 3888 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:20:43,194 INFO L231 Difference]: Finished difference. Result has 391 places, 424 transitions, 2769 flow [2022-11-21 16:20:43,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=2769, PETRI_PLACES=391, PETRI_TRANSITIONS=424} [2022-11-21 16:20:43,196 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 142 predicate places. [2022-11-21 16:20:43,196 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 424 transitions, 2769 flow [2022-11-21 16:20:43,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 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 16:20:43,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:43,199 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:43,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:43,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:43,411 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1879606067, now seen corresponding path program 1 times [2022-11-21 16:20:43,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:43,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567235158] [2022-11-21 16:20:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:43,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:44,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567235158] [2022-11-21 16:20:44,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567235158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884326070] [2022-11-21 16:20:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:44,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:44,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:44,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:44,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:20:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:44,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-21 16:20:44,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:45,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:46,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884326070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:46,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:46,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-11-21 16:20:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731198370] [2022-11-21 16:20:46,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-21 16:20:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-21 16:20:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-11-21 16:20:46,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-21 16:20:46,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 424 transitions, 2769 flow. Second operand has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 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 16:20:46,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:46,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-21 16:20:46,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:51,062 INFO L130 PetriNetUnfolder]: 71/2226 cut-off events. [2022-11-21 16:20:51,062 INFO L131 PetriNetUnfolder]: For 6068/6068 co-relation queries the response was YES. [2022-11-21 16:20:51,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 2226 events. 71/2226 cut-off events. For 6068/6068 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8861 event pairs, 0 based on Foata normal form. 18/2244 useless extension candidates. Maximal degree in co-relation 5516. Up to 217 conditions per place. [2022-11-21 16:20:51,071 INFO L137 encePairwiseOnDemand]: 263/281 looper letters, 497 selfloop transitions, 380 changer transitions 0/1066 dead transitions. [2022-11-21 16:20:51,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1066 transitions, 8526 flow [2022-11-21 16:20:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-21 16:20:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-11-21 16:20:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 21799 transitions. [2022-11-21 16:20:51,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459280043799617 [2022-11-21 16:20:51,095 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 21799 transitions. [2022-11-21 16:20:51,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 21799 transitions. [2022-11-21 16:20:51,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:51,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 21799 transitions. [2022-11-21 16:20:51,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 209.60576923076923) internal successors, (21799), 104 states have internal predecessors, (21799), 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 16:20:51,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 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 16:20:51,166 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 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 16:20:51,167 INFO L175 Difference]: Start difference. First operand has 391 places, 424 transitions, 2769 flow. Second operand 104 states and 21799 transitions. [2022-11-21 16:20:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1066 transitions, 8526 flow [2022-11-21 16:20:51,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1066 transitions, 7958 flow, removed 162 selfloop flow, removed 28 redundant places. [2022-11-21 16:20:51,216 INFO L231 Difference]: Finished difference. Result has 485 places, 627 transitions, 5327 flow [2022-11-21 16:20:51,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=5327, PETRI_PLACES=485, PETRI_TRANSITIONS=627} [2022-11-21 16:20:51,217 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 236 predicate places. [2022-11-21 16:20:51,218 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 627 transitions, 5327 flow [2022-11-21 16:20:51,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 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 16:20:51,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:51,221 INFO L209 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:51,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:51,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:20:51,427 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-21 16:20:51,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash 17224237, now seen corresponding path program 2 times [2022-11-21 16:20:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:51,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234647907] [2022-11-21 16:20:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:51,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:55,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:55,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234647907] [2022-11-21 16:20:55,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234647907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:55,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584293700] [2022-11-21 16:20:55,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:20:55,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:55,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:55,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:20:55,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:20:55,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:55,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:20:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-21 16:20:56,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-21 16:20:57,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584293700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:57,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:57,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-11-21 16:20:57,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210976480] [2022-11-21 16:20:57,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:57,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-21 16:20:57,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-21 16:20:57,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-11-21 16:20:57,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-21 16:20:57,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 627 transitions, 5327 flow. Second operand has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 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 16:20:57,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:57,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-21 16:20:57,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:13,468 INFO L130 PetriNetUnfolder]: 75/2340 cut-off events. [2022-11-21 16:21:13,468 INFO L131 PetriNetUnfolder]: For 6583/6583 co-relation queries the response was YES. [2022-11-21 16:21:13,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 2340 events. 75/2340 cut-off events. For 6583/6583 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9396 event pairs, 0 based on Foata normal form. 2/2342 useless extension candidates. Maximal degree in co-relation 6235. Up to 209 conditions per place. [2022-11-21 16:21:13,478 INFO L137 encePairwiseOnDemand]: 256/281 looper letters, 0 selfloop transitions, 0 changer transitions 1258/1258 dead transitions. [2022-11-21 16:21:13,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 1258 transitions, 10361 flow [2022-11-21 16:21:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-11-21 16:21:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2022-11-21 16:21:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 54337 transitions. [2022-11-21 16:21:13,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577214515699519 [2022-11-21 16:21:13,633 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 54337 transitions. [2022-11-21 16:21:13,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 54337 transitions. [2022-11-21 16:21:13,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:13,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 54337 transitions. [2022-11-21 16:21:13,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 184.81972789115648) internal successors, (54337), 294 states have internal predecessors, (54337), 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 16:21:13,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 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 16:21:13,816 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 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 16:21:13,817 INFO L175 Difference]: Start difference. First operand has 485 places, 627 transitions, 5327 flow. Second operand 294 states and 54337 transitions. [2022-11-21 16:21:13,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 1258 transitions, 10361 flow [2022-11-21 16:21:13,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 1258 transitions, 9859 flow, removed 3 selfloop flow, removed 79 redundant places. [2022-11-21 16:21:13,891 INFO L231 Difference]: Finished difference. Result has 698 places, 0 transitions, 0 flow [2022-11-21 16:21:13,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=294, PETRI_FLOW=0, PETRI_PLACES=698, PETRI_TRANSITIONS=0} [2022-11-21 16:21:13,892 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 449 predicate places. [2022-11-21 16:21:13,892 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 0 transitions, 0 flow [2022-11-21 16:21:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 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 16:21:13,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2022-11-21 16:21:13,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-21 16:21:13,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-21 16:21:13,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-21 16:21:13,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-21 16:21:13,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-21 16:21:13,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-21 16:21:13,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-21 16:21:13,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-21 16:21:13,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-21 16:21:13,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-21 16:21:13,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-21 16:21:13,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-21 16:21:13,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-21 16:21:13,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-21 16:21:13,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-21 16:21:13,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-21 16:21:13,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-21 16:21:13,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-21 16:21:13,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-21 16:21:13,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-21 16:21:13,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-21 16:21:13,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2022-11-21 16:21:13,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2022-11-21 16:21:13,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2022-11-21 16:21:13,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-21 16:21:13,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-21 16:21:13,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-21 16:21:13,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-21 16:21:13,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-21 16:21:13,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-21 16:21:13,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-21 16:21:13,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-21 16:21:13,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-21 16:21:13,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-21 16:21:13,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-21 16:21:13,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-21 16:21:13,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-21 16:21:13,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-21 16:21:13,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-21 16:21:13,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-21 16:21:13,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-21 16:21:14,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:14,112 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:14,120 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:21:14,120 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:21:14,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:21:14 BasicIcfg [2022-11-21 16:21:14,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:21:14,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:21:14,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:21:14,130 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:21:14,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:20:13" (3/4) ... [2022-11-21 16:21:14,133 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:21:14,138 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:21:14,138 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:21:14,138 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-21 16:21:14,146 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-21 16:21:14,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:21:14,147 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:21:14,148 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:21:14,196 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:21:14,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:21:14,197 INFO L158 Benchmark]: Toolchain (without parser) took 62066.81ms. Allocated memory was 146.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 100.1MB in the beginning and 1.0GB in the end (delta: -930.3MB). Peak memory consumption was 317.1MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,197 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 146.8MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:21:14,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.03ms. Allocated memory is still 146.8MB. Free memory was 99.8MB in the beginning and 87.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.26ms. Allocated memory is still 146.8MB. Free memory was 87.2MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,198 INFO L158 Benchmark]: Boogie Preprocessor took 40.87ms. Allocated memory is still 146.8MB. Free memory was 84.1MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,199 INFO L158 Benchmark]: RCFGBuilder took 1346.05ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 82.1MB in the beginning and 110.0MB in the end (delta: -27.9MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,199 INFO L158 Benchmark]: TraceAbstraction took 60226.65ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 109.1MB in the beginning and 1.0GB in the end (delta: -925.5MB). Peak memory consumption was 960.5MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,199 INFO L158 Benchmark]: Witness Printer took 66.92ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:21:14,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 146.8MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.03ms. Allocated memory is still 146.8MB. Free memory was 99.8MB in the beginning and 87.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.26ms. Allocated memory is still 146.8MB. Free memory was 87.2MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.87ms. Allocated memory is still 146.8MB. Free memory was 84.1MB in the beginning and 82.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1346.05ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 82.1MB in the beginning and 110.0MB in the end (delta: -27.9MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * TraceAbstraction took 60226.65ms. Allocated memory was 195.0MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 109.1MB in the beginning and 1.0GB in the end (delta: -925.5MB). Peak memory consumption was 960.5MB. Max. memory is 16.1GB. * Witness Printer took 66.92ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: 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, 308 locations, 41 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: 60.0s, OverallIterations: 12, TraceHistogramMax: 35, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 41.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12724 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12724 mSDsluCounter, 1304 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1102 mSDsCounter, 1572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5891 IncrementalHoareTripleChecker+Invalid, 7463 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1572 mSolverCounterUnsat, 202 mSDtfsCounter, 5891 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3780 GetRequests, 2909 SyntacticMatches, 15 SemanticMatches, 856 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67449 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5327occurred in iteration=11, InterpolantAutomatonStates: 680, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 3704 NumberOfCodeBlocks, 3236 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4946 ConstructedInterpolants, 0 QuantifiedInterpolants, 10494 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2704 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 11960/22782 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:21:14,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05cf65ee-5be8-4415-bb07-d3ff45ea3c42/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