./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN --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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- 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-6b4ec56 [2022-11-20 10:32:59,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:59,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:59,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:59,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:59,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:59,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:59,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:59,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:59,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:59,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:59,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:59,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:59,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:59,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:59,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:59,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:59,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:59,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:59,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:59,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:59,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:59,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:59,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:59,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:59,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:59,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:59,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:59,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:59,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:59,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:59,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:59,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:59,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:59,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:59,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:59,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:59,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:59,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:59,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:59,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:59,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:32:59,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:59,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:59,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:59,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:59,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:59,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:59,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:59,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:59,330 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:59,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:59,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:32:59,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:32:59,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:32:59,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:32:59,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:59,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:32:59,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:59,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:32:59,334 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:32:59,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:32:59,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:32:59,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:59,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:32:59,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:59,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:59,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:59,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:59,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:59,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:59,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:32:59,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:32:59,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:32:59,337 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:32:59,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:32:59,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:32:59,338 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_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2022-11-20 10:32:59,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:59,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:59,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:59,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:59,675 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:59,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-11-20 10:33:02,955 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:03,210 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:03,213 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-11-20 10:33:03,220 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/data/cb86aefb6/42729ac9f4b94e84968f586a66182d96/FLAG51b10f0cc [2022-11-20 10:33:03,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/data/cb86aefb6/42729ac9f4b94e84968f586a66182d96 [2022-11-20 10:33:03,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:03,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:03,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:03,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:03,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:03,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273df589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03, skipping insertion in model container [2022-11-20 10:33:03,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:03,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:03,465 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_1fee7e63-6df3-4929-8739-b275b852ffe2/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-11-20 10:33:03,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:03,484 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:03,511 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_1fee7e63-6df3-4929-8739-b275b852ffe2/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-11-20 10:33:03,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:03,532 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:03,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03 WrapperNode [2022-11-20 10:33:03,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:03,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:03,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:03,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:03,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,624 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2022-11-20 10:33:03,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:03,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:03,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:03,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:03,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:03,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:03,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:03,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:03,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (1/1) ... [2022-11-20 10:33:03,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:03,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:03,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:33:03,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:33:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:33:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:33:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:33:03,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:33:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:33:03,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:33:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:33:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:33:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:33:03,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:33:03,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:03,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:03,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:33:03,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:33:03,847 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:33:04,011 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:04,014 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:04,396 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:33:04,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:33:04,494 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:33:04,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:04 BoogieIcfgContainer [2022-11-20 10:33:04,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:33:04,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:33:04,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:33:04,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:33:04,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:03" (1/3) ... [2022-11-20 10:33:04,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed7798f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:04, skipping insertion in model container [2022-11-20 10:33:04,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03" (2/3) ... [2022-11-20 10:33:04,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed7798f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:04, skipping insertion in model container [2022-11-20 10:33:04,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:04" (3/3) ... [2022-11-20 10:33:04,512 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-11-20 10:33:04,525 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:33:04,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:33:04,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:33:04,536 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:33:04,660 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:33:04,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 344 flow [2022-11-20 10:33:04,798 INFO L130 PetriNetUnfolder]: 10/157 cut-off events. [2022-11-20 10:33:04,805 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:33:04,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 10/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-11-20 10:33:04,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 160 transitions, 344 flow [2022-11-20 10:33:04,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 133 transitions, 278 flow [2022-11-20 10:33:04,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:33:04,862 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;@2b7e092, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:33:04,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 10:33:04,902 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2022-11-20 10:33:04,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:33:04,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:04,908 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] [2022-11-20 10:33:04,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1206568422, now seen corresponding path program 1 times [2022-11-20 10:33:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:04,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299653132] [2022-11-20 10:33:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:05,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:05,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299653132] [2022-11-20 10:33:05,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299653132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:05,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:05,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383406613] [2022-11-20 10:33:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:05,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:05,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:05,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-11-20 10:33:05,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:05,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-11-20 10:33:05,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:05,719 INFO L130 PetriNetUnfolder]: 37/382 cut-off events. [2022-11-20 10:33:05,720 INFO L131 PetriNetUnfolder]: For 40/42 co-relation queries the response was YES. [2022-11-20 10:33:05,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 382 events. 37/382 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1420 event pairs, 14 based on Foata normal form. 36/350 useless extension candidates. Maximal degree in co-relation 294. Up to 41 conditions per place. [2022-11-20 10:33:05,731 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 28 selfloop transitions, 4 changer transitions 3/141 dead transitions. [2022-11-20 10:33:05,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 370 flow [2022-11-20 10:33:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 704 transitions. [2022-11-20 10:33:05,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88 [2022-11-20 10:33:05,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 704 transitions. [2022-11-20 10:33:05,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 704 transitions. [2022-11-20 10:33:05,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:05,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 704 transitions. [2022-11-20 10:33:05,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,774 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 278 flow. Second operand 5 states and 704 transitions. [2022-11-20 10:33:05,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 370 flow [2022-11-20 10:33:05,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 141 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:33:05,784 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 284 flow [2022-11-20 10:33:05,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-11-20 10:33:05,790 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-11-20 10:33:05,791 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 284 flow [2022-11-20 10:33:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:05,792 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] [2022-11-20 10:33:05,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:33:05,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash -563421055, now seen corresponding path program 1 times [2022-11-20 10:33:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:05,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255900118] [2022-11-20 10:33:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:06,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:06,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255900118] [2022-11-20 10:33:06,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255900118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:06,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240080860] [2022-11-20 10:33:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:06,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:06,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:06,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:06,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:33:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:06,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:06,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:06,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:06,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240080860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:06,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:06,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:33:06,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259080180] [2022-11-20 10:33:06,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:06,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:33:06,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:33:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:33:06,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-11-20 10:33:06,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 134.66666666666666) internal successors, (1616), 12 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:06,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:06,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-11-20 10:33:06,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:07,126 INFO L130 PetriNetUnfolder]: 91/878 cut-off events. [2022-11-20 10:33:07,126 INFO L131 PetriNetUnfolder]: For 31/36 co-relation queries the response was YES. [2022-11-20 10:33:07,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 878 events. 91/878 cut-off events. For 31/36 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4792 event pairs, 35 based on Foata normal form. 3/726 useless extension candidates. Maximal degree in co-relation 884. Up to 45 conditions per place. [2022-11-20 10:33:07,136 INFO L137 encePairwiseOnDemand]: 153/160 looper letters, 58 selfloop transitions, 18 changer transitions 0/182 dead transitions. [2022-11-20 10:33:07,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 182 transitions, 592 flow [2022-11-20 10:33:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:33:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:33:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2455 transitions. [2022-11-20 10:33:07,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8524305555555556 [2022-11-20 10:33:07,143 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2455 transitions. [2022-11-20 10:33:07,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2455 transitions. [2022-11-20 10:33:07,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:07,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2455 transitions. [2022-11-20 10:33:07,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.38888888888889) internal successors, (2455), 18 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:07,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:07,162 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:07,162 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 284 flow. Second operand 18 states and 2455 transitions. [2022-11-20 10:33:07,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 182 transitions, 592 flow [2022-11-20 10:33:07,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 182 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:33:07,171 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 388 flow [2022-11-20 10:33:07,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=388, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2022-11-20 10:33:07,172 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 20 predicate places. [2022-11-20 10:33:07,172 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 388 flow [2022-11-20 10:33:07,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.66666666666666) internal successors, (1616), 12 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:07,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:07,176 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] [2022-11-20 10:33:07,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:07,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -286183228, now seen corresponding path program 1 times [2022-11-20 10:33:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737951539] [2022-11-20 10:33:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:07,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:07,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737951539] [2022-11-20 10:33:07,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737951539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:07,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479027320] [2022-11-20 10:33:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:07,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:07,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:33:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:07,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:07,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:07,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479027320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:07,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:07,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:33:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833003041] [2022-11-20 10:33:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:33:07,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:33:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:07,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-11-20 10:33:07,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:07,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:07,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-11-20 10:33:07,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:08,127 INFO L130 PetriNetUnfolder]: 91/874 cut-off events. [2022-11-20 10:33:08,127 INFO L131 PetriNetUnfolder]: For 67/72 co-relation queries the response was YES. [2022-11-20 10:33:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 874 events. 91/874 cut-off events. For 67/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4772 event pairs, 35 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 924. Up to 128 conditions per place. [2022-11-20 10:33:08,135 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 29 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2022-11-20 10:33:08,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 471 flow [2022-11-20 10:33:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:33:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 956 transitions. [2022-11-20 10:33:08,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535714285714285 [2022-11-20 10:33:08,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 956 transitions. [2022-11-20 10:33:08,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 956 transitions. [2022-11-20 10:33:08,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:08,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 956 transitions. [2022-11-20 10:33:08,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,150 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,150 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 388 flow. Second operand 7 states and 956 transitions. [2022-11-20 10:33:08,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 471 flow [2022-11-20 10:33:08,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 439 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 10:33:08,162 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 351 flow [2022-11-20 10:33:08,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2022-11-20 10:33:08,165 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 16 predicate places. [2022-11-20 10:33:08,165 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 351 flow [2022-11-20 10:33:08,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:08,166 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] [2022-11-20 10:33:08,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:08,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:08,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1013773231, now seen corresponding path program 1 times [2022-11-20 10:33:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:08,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232287297] [2022-11-20 10:33:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232287297] [2022-11-20 10:33:08,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232287297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861178497] [2022-11-20 10:33:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:08,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-20 10:33:08,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:08,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-20 10:33:08,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:08,890 INFO L130 PetriNetUnfolder]: 691/2049 cut-off events. [2022-11-20 10:33:08,890 INFO L131 PetriNetUnfolder]: For 42/67 co-relation queries the response was YES. [2022-11-20 10:33:08,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3853 conditions, 2049 events. 691/2049 cut-off events. For 42/67 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14622 event pairs, 125 based on Foata normal form. 5/1714 useless extension candidates. Maximal degree in co-relation 3072. Up to 681 conditions per place. [2022-11-20 10:33:08,908 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 30 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2022-11-20 10:33:08,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 468 flow [2022-11-20 10:33:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2022-11-20 10:33:08,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8825 [2022-11-20 10:33:08,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2022-11-20 10:33:08,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2022-11-20 10:33:08,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:08,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2022-11-20 10:33:08,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,918 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 351 flow. Second operand 5 states and 706 transitions. [2022-11-20 10:33:08,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 468 flow [2022-11-20 10:33:08,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 153 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:33:08,924 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 367 flow [2022-11-20 10:33:08,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2022-11-20 10:33:08,925 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 18 predicate places. [2022-11-20 10:33:08,925 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 367 flow [2022-11-20 10:33:08,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:08,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:08,926 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] [2022-11-20 10:33:08,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:33:08,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1793086727, now seen corresponding path program 1 times [2022-11-20 10:33:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:08,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097144721] [2022-11-20 10:33:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:09,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097144721] [2022-11-20 10:33:09,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097144721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:09,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:09,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802647443] [2022-11-20 10:33:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:09,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-20 10:33:09,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:09,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:09,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-20 10:33:09,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:09,670 INFO L130 PetriNetUnfolder]: 886/2774 cut-off events. [2022-11-20 10:33:09,670 INFO L131 PetriNetUnfolder]: For 242/247 co-relation queries the response was YES. [2022-11-20 10:33:09,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 2774 events. 886/2774 cut-off events. For 242/247 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 24007 event pairs, 435 based on Foata normal form. 0/2484 useless extension candidates. Maximal degree in co-relation 4179. Up to 966 conditions per place. [2022-11-20 10:33:09,692 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 29 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-11-20 10:33:09,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 155 transitions, 476 flow [2022-11-20 10:33:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2022-11-20 10:33:09,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.88125 [2022-11-20 10:33:09,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2022-11-20 10:33:09,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2022-11-20 10:33:09,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:09,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2022-11-20 10:33:09,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:09,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:09,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:09,701 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 367 flow. Second operand 5 states and 705 transitions. [2022-11-20 10:33:09,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 155 transitions, 476 flow [2022-11-20 10:33:09,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 155 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:33:09,709 INFO L231 Difference]: Finished difference. Result has 158 places, 141 transitions, 395 flow [2022-11-20 10:33:09,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=158, PETRI_TRANSITIONS=141} [2022-11-20 10:33:09,713 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 24 predicate places. [2022-11-20 10:33:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 141 transitions, 395 flow [2022-11-20 10:33:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:09,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:09,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:33:09,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1590183433, now seen corresponding path program 1 times [2022-11-20 10:33:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172230996] [2022-11-20 10:33:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:09,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:09,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172230996] [2022-11-20 10:33:09,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172230996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:09,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877398317] [2022-11-20 10:33:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:09,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:09,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:33:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:10,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:10,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:33:10,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:10,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877398317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:10,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:10,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:33:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719703675] [2022-11-20 10:33:10,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:10,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-11-20 10:33:10,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 141 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:10,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:10,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-11-20 10:33:10,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:11,240 INFO L130 PetriNetUnfolder]: 1195/4059 cut-off events. [2022-11-20 10:33:11,240 INFO L131 PetriNetUnfolder]: For 774/774 co-relation queries the response was YES. [2022-11-20 10:33:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 4059 events. 1195/4059 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 36044 event pairs, 958 based on Foata normal form. 0/3551 useless extension candidates. Maximal degree in co-relation 8008. Up to 1837 conditions per place. [2022-11-20 10:33:11,338 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 46 selfloop transitions, 8 changer transitions 2/159 dead transitions. [2022-11-20 10:33:11,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 555 flow [2022-11-20 10:33:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:33:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:33:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2022-11-20 10:33:11,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.80078125 [2022-11-20 10:33:11,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2022-11-20 10:33:11,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2022-11-20 10:33:11,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:11,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2022-11-20 10:33:11,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:11,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:11,350 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:11,350 INFO L175 Difference]: Start difference. First operand has 158 places, 141 transitions, 395 flow. Second operand 8 states and 1025 transitions. [2022-11-20 10:33:11,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 555 flow [2022-11-20 10:33:11,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:33:11,361 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 427 flow [2022-11-20 10:33:11,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2022-11-20 10:33:11,362 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 33 predicate places. [2022-11-20 10:33:11,363 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 427 flow [2022-11-20 10:33:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:11,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:11,364 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:11,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:11,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 444222767, now seen corresponding path program 1 times [2022-11-20 10:33:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:11,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478007923] [2022-11-20 10:33:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:11,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478007923] [2022-11-20 10:33:11,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478007923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:11,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231526323] [2022-11-20 10:33:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:11,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:11,706 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:11,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:33:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:11,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:33:11,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:11,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231526323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:11,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:11,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:33:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348154842] [2022-11-20 10:33:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:11,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-11-20 10:33:11,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:11,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:11,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-11-20 10:33:11,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:12,775 INFO L130 PetriNetUnfolder]: 1061/3084 cut-off events. [2022-11-20 10:33:12,775 INFO L131 PetriNetUnfolder]: For 764/770 co-relation queries the response was YES. [2022-11-20 10:33:12,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6773 conditions, 3084 events. 1061/3084 cut-off events. For 764/770 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25382 event pairs, 977 based on Foata normal form. 6/2796 useless extension candidates. Maximal degree in co-relation 6521. Up to 1797 conditions per place. [2022-11-20 10:33:12,813 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 34 selfloop transitions, 6 changer transitions 13/156 dead transitions. [2022-11-20 10:33:12,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 156 transitions, 568 flow [2022-11-20 10:33:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:33:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:33:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2022-11-20 10:33:12,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.79765625 [2022-11-20 10:33:12,818 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2022-11-20 10:33:12,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2022-11-20 10:33:12,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:12,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2022-11-20 10:33:12,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:12,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:12,827 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:12,828 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 427 flow. Second operand 8 states and 1021 transitions. [2022-11-20 10:33:12,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 156 transitions, 568 flow [2022-11-20 10:33:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 156 transitions, 558 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:33:12,838 INFO L231 Difference]: Finished difference. Result has 172 places, 141 transitions, 419 flow [2022-11-20 10:33:12,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=172, PETRI_TRANSITIONS=141} [2022-11-20 10:33:12,839 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 38 predicate places. [2022-11-20 10:33:12,839 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 141 transitions, 419 flow [2022-11-20 10:33:12,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:12,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:12,840 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] [2022-11-20 10:33:12,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:33:13,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:13,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:13,048 INFO L85 PathProgramCache]: Analyzing trace with hash 591751846, now seen corresponding path program 2 times [2022-11-20 10:33:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:13,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847121432] [2022-11-20 10:33:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:13,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847121432] [2022-11-20 10:33:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847121432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:13,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447982129] [2022-11-20 10:33:13,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:13,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:13,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:13,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:33:13,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:33:13,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:13,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:33:13,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:33:13,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:33:13,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447982129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:13,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:13,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:33:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181610525] [2022-11-20 10:33:13,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:33:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:33:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:33:13,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 160 [2022-11-20 10:33:13,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 141 transitions, 419 flow. Second operand has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:13,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 160 [2022-11-20 10:33:13,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:15,411 INFO L130 PetriNetUnfolder]: 955/3843 cut-off events. [2022-11-20 10:33:15,411 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2022-11-20 10:33:15,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 3843 events. 955/3843 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 34476 event pairs, 828 based on Foata normal form. 2/3695 useless extension candidates. Maximal degree in co-relation 7754. Up to 385 conditions per place. [2022-11-20 10:33:15,440 INFO L137 encePairwiseOnDemand]: 149/160 looper letters, 102 selfloop transitions, 25 changer transitions 0/224 dead transitions. [2022-11-20 10:33:15,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 224 transitions, 913 flow [2022-11-20 10:33:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:33:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:33:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2937 transitions. [2022-11-20 10:33:15,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.76484375 [2022-11-20 10:33:15,448 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2937 transitions. [2022-11-20 10:33:15,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2937 transitions. [2022-11-20 10:33:15,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:15,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2937 transitions. [2022-11-20 10:33:15,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.375) internal successors, (2937), 24 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:15,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:15,469 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:15,469 INFO L175 Difference]: Start difference. First operand has 172 places, 141 transitions, 419 flow. Second operand 24 states and 2937 transitions. [2022-11-20 10:33:15,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 224 transitions, 913 flow [2022-11-20 10:33:15,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 224 transitions, 863 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-11-20 10:33:15,483 INFO L231 Difference]: Finished difference. Result has 177 places, 145 transitions, 458 flow [2022-11-20 10:33:15,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=458, PETRI_PLACES=177, PETRI_TRANSITIONS=145} [2022-11-20 10:33:15,484 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 43 predicate places. [2022-11-20 10:33:15,484 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 145 transitions, 458 flow [2022-11-20 10:33:15,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:15,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:15,486 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:15,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 10:33:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:15,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1440528932, now seen corresponding path program 1 times [2022-11-20 10:33:15,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:15,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857007493] [2022-11-20 10:33:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:33:15,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857007493] [2022-11-20 10:33:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857007493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165129744] [2022-11-20 10:33:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:15,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:15,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:15,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:15,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:33:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:16,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:33:16,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:16,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:16,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165129744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:16,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:16,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 10:33:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127485562] [2022-11-20 10:33:16,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:16,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:33:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:33:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:33:16,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 160 [2022-11-20 10:33:16,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 145 transitions, 458 flow. Second operand has 23 states, 23 states have (on average 115.65217391304348) internal successors, (2660), 23 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:16,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:16,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 160 [2022-11-20 10:33:16,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:19,214 INFO L130 PetriNetUnfolder]: 3170/7698 cut-off events. [2022-11-20 10:33:19,214 INFO L131 PetriNetUnfolder]: For 664/769 co-relation queries the response was YES. [2022-11-20 10:33:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17555 conditions, 7698 events. 3170/7698 cut-off events. For 664/769 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 69321 event pairs, 1019 based on Foata normal form. 110/6713 useless extension candidates. Maximal degree in co-relation 9987. Up to 1604 conditions per place. [2022-11-20 10:33:19,282 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 129 selfloop transitions, 32 changer transitions 9/259 dead transitions. [2022-11-20 10:33:19,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 1121 flow [2022-11-20 10:33:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:33:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 10:33:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2960 transitions. [2022-11-20 10:33:19,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.74 [2022-11-20 10:33:19,292 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2960 transitions. [2022-11-20 10:33:19,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2960 transitions. [2022-11-20 10:33:19,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:19,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2960 transitions. [2022-11-20 10:33:19,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 118.4) internal successors, (2960), 25 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:19,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:19,323 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:19,331 INFO L175 Difference]: Start difference. First operand has 177 places, 145 transitions, 458 flow. Second operand 25 states and 2960 transitions. [2022-11-20 10:33:19,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 259 transitions, 1121 flow [2022-11-20 10:33:19,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 259 transitions, 1063 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-20 10:33:19,347 INFO L231 Difference]: Finished difference. Result has 190 places, 159 transitions, 559 flow [2022-11-20 10:33:19,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=559, PETRI_PLACES=190, PETRI_TRANSITIONS=159} [2022-11-20 10:33:19,349 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 56 predicate places. [2022-11-20 10:33:19,349 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 159 transitions, 559 flow [2022-11-20 10:33:19,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.65217391304348) internal successors, (2660), 23 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:19,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:19,351 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:19,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:19,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1504706826, now seen corresponding path program 1 times [2022-11-20 10:33:19,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:19,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373502802] [2022-11-20 10:33:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:33:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:19,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373502802] [2022-11-20 10:33:19,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373502802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:19,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457562389] [2022-11-20 10:33:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:19,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:19,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:19,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:19,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:33:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:33:19,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:20,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:20,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457562389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:20,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:20,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 10:33:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183870570] [2022-11-20 10:33:20,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:20,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:33:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:33:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:33:20,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 160 [2022-11-20 10:33:20,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 159 transitions, 559 flow. Second operand has 23 states, 23 states have (on average 115.73913043478261) internal successors, (2662), 23 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:20,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:20,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 160 [2022-11-20 10:33:20,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:23,240 INFO L130 PetriNetUnfolder]: 4564/10221 cut-off events. [2022-11-20 10:33:23,241 INFO L131 PetriNetUnfolder]: For 2974/3766 co-relation queries the response was YES. [2022-11-20 10:33:23,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26000 conditions, 10221 events. 4564/10221 cut-off events. For 2974/3766 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 96672 event pairs, 1053 based on Foata normal form. 907/10613 useless extension candidates. Maximal degree in co-relation 17962. Up to 2554 conditions per place. [2022-11-20 10:33:23,318 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 105 selfloop transitions, 26 changer transitions 66/290 dead transitions. [2022-11-20 10:33:23,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 290 transitions, 1405 flow [2022-11-20 10:33:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:33:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 10:33:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2957 transitions. [2022-11-20 10:33:23,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.73925 [2022-11-20 10:33:23,325 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2957 transitions. [2022-11-20 10:33:23,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2957 transitions. [2022-11-20 10:33:23,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:23,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2957 transitions. [2022-11-20 10:33:23,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 118.28) internal successors, (2957), 25 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:23,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:23,341 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 160.0) internal successors, (4160), 26 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:23,341 INFO L175 Difference]: Start difference. First operand has 190 places, 159 transitions, 559 flow. Second operand 25 states and 2957 transitions. [2022-11-20 10:33:23,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 290 transitions, 1405 flow [2022-11-20 10:33:23,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 290 transitions, 1368 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-20 10:33:23,363 INFO L231 Difference]: Finished difference. Result has 209 places, 158 transitions, 591 flow [2022-11-20 10:33:23,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=591, PETRI_PLACES=209, PETRI_TRANSITIONS=158} [2022-11-20 10:33:23,364 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 75 predicate places. [2022-11-20 10:33:23,364 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 158 transitions, 591 flow [2022-11-20 10:33:23,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.73913043478261) internal successors, (2662), 23 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:23,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:23,365 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:23,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:23,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:33:23,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -387130772, now seen corresponding path program 1 times [2022-11-20 10:33:23,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:23,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727263177] [2022-11-20 10:33:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:33:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:23,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727263177] [2022-11-20 10:33:23,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727263177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:23,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439741198] [2022-11-20 10:33:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:23,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:23,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:23,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:33:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:23,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:23,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:33:23,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:23,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439741198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:23,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:23,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:33:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867031406] [2022-11-20 10:33:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:33:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:33:23,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:23,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-20 10:33:23,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 158 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:23,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:23,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-20 10:33:23,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:25,039 INFO L130 PetriNetUnfolder]: 1491/3669 cut-off events. [2022-11-20 10:33:25,039 INFO L131 PetriNetUnfolder]: For 1110/1110 co-relation queries the response was YES. [2022-11-20 10:33:25,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 3669 events. 1491/3669 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 31327 event pairs, 15 based on Foata normal form. 90/3589 useless extension candidates. Maximal degree in co-relation 7203. Up to 915 conditions per place. [2022-11-20 10:33:25,066 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 35 selfloop transitions, 8 changer transitions 0/176 dead transitions. [2022-11-20 10:33:25,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 176 transitions, 726 flow [2022-11-20 10:33:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:33:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 978 transitions. [2022-11-20 10:33:25,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732142857142857 [2022-11-20 10:33:25,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 978 transitions. [2022-11-20 10:33:25,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 978 transitions. [2022-11-20 10:33:25,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:25,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 978 transitions. [2022-11-20 10:33:25,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.71428571428572) internal successors, (978), 7 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:25,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:25,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:25,074 INFO L175 Difference]: Start difference. First operand has 209 places, 158 transitions, 591 flow. Second operand 7 states and 978 transitions. [2022-11-20 10:33:25,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 176 transitions, 726 flow [2022-11-20 10:33:25,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 685 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-11-20 10:33:25,089 INFO L231 Difference]: Finished difference. Result has 188 places, 156 transitions, 554 flow [2022-11-20 10:33:25,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=188, PETRI_TRANSITIONS=156} [2022-11-20 10:33:25,090 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 54 predicate places. [2022-11-20 10:33:25,091 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 156 transitions, 554 flow [2022-11-20 10:33:25,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:25,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:25,092 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:25,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:25,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:33:25,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash -337587471, now seen corresponding path program 2 times [2022-11-20 10:33:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:25,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913389168] [2022-11-20 10:33:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913389168] [2022-11-20 10:33:25,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913389168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293556450] [2022-11-20 10:33:25,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:25,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:25,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:33:25,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:33:25,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:25,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:25,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:33:26,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:33:26,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293556450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:26,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:26,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 10:33:26,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978160593] [2022-11-20 10:33:26,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:26,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:33:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:33:26,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:33:26,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2022-11-20 10:33:26,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 156 transitions, 554 flow. Second operand has 19 states, 19 states have (on average 113.21052631578948) internal successors, (2151), 19 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:26,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:26,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2022-11-20 10:33:26,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:29,244 INFO L130 PetriNetUnfolder]: 3649/9454 cut-off events. [2022-11-20 10:33:29,244 INFO L131 PetriNetUnfolder]: For 5019/5536 co-relation queries the response was YES. [2022-11-20 10:33:29,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25082 conditions, 9454 events. 3649/9454 cut-off events. For 5019/5536 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 93095 event pairs, 825 based on Foata normal form. 590/9812 useless extension candidates. Maximal degree in co-relation 17813. Up to 1800 conditions per place. [2022-11-20 10:33:29,293 INFO L137 encePairwiseOnDemand]: 142/160 looper letters, 121 selfloop transitions, 38 changer transitions 50/297 dead transitions. [2022-11-20 10:33:29,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 297 transitions, 1499 flow [2022-11-20 10:33:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:33:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 10:33:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3431 transitions. [2022-11-20 10:33:29,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7147916666666667 [2022-11-20 10:33:29,300 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3431 transitions. [2022-11-20 10:33:29,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3431 transitions. [2022-11-20 10:33:29,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:29,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3431 transitions. [2022-11-20 10:33:29,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.36666666666666) internal successors, (3431), 30 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,317 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,317 INFO L175 Difference]: Start difference. First operand has 188 places, 156 transitions, 554 flow. Second operand 30 states and 3431 transitions. [2022-11-20 10:33:29,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 297 transitions, 1499 flow [2022-11-20 10:33:29,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 297 transitions, 1473 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 10:33:29,367 INFO L231 Difference]: Finished difference. Result has 213 places, 162 transitions, 678 flow [2022-11-20 10:33:29,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=678, PETRI_PLACES=213, PETRI_TRANSITIONS=162} [2022-11-20 10:33:29,368 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 79 predicate places. [2022-11-20 10:33:29,369 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 162 transitions, 678 flow [2022-11-20 10:33:29,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.21052631578948) internal successors, (2151), 19 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:29,370 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:29,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:29,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:33:29,577 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1511587820, now seen corresponding path program 1 times [2022-11-20 10:33:29,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:29,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051118095] [2022-11-20 10:33:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:29,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:33:29,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051118095] [2022-11-20 10:33:29,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051118095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582447973] [2022-11-20 10:33:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:29,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:29,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:33:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:29,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:33:29,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:29,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582447973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:29,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:29,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:33:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333206015] [2022-11-20 10:33:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:33:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:33:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:29,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 160 [2022-11-20 10:33:29,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 162 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:29,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:29,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 160 [2022-11-20 10:33:29,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:30,744 INFO L130 PetriNetUnfolder]: 1458/3869 cut-off events. [2022-11-20 10:33:30,744 INFO L131 PetriNetUnfolder]: For 1720/1725 co-relation queries the response was YES. [2022-11-20 10:33:30,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 3869 events. 1458/3869 cut-off events. For 1720/1725 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 35358 event pairs, 164 based on Foata normal form. 106/3878 useless extension candidates. Maximal degree in co-relation 6878. Up to 1035 conditions per place. [2022-11-20 10:33:30,770 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 31 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2022-11-20 10:33:30,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 179 transitions, 795 flow [2022-11-20 10:33:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:33:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 975 transitions. [2022-11-20 10:33:30,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705357142857143 [2022-11-20 10:33:30,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 975 transitions. [2022-11-20 10:33:30,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 975 transitions. [2022-11-20 10:33:30,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:30,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 975 transitions. [2022-11-20 10:33:30,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.28571428571428) internal successors, (975), 7 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:30,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:30,779 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:30,779 INFO L175 Difference]: Start difference. First operand has 213 places, 162 transitions, 678 flow. Second operand 7 states and 975 transitions. [2022-11-20 10:33:30,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 179 transitions, 795 flow [2022-11-20 10:33:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 179 transitions, 745 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-20 10:33:30,795 INFO L231 Difference]: Finished difference. Result has 198 places, 160 transitions, 630 flow [2022-11-20 10:33:30,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=198, PETRI_TRANSITIONS=160} [2022-11-20 10:33:30,797 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 64 predicate places. [2022-11-20 10:33:30,797 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 160 transitions, 630 flow [2022-11-20 10:33:30,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:30,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:30,798 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:30,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:31,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:33:31,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:33:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1682845735, now seen corresponding path program 2 times [2022-11-20 10:33:31,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:31,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505323953] [2022-11-20 10:33:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:31,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505323953] [2022-11-20 10:33:31,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505323953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:31,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568210446] [2022-11-20 10:33:31,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:31,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:31,408 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:31,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:33:31,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:33:31,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:31,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:33:31,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:33:31,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:33:31,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568210446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:31,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:31,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 10:33:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873721772] [2022-11-20 10:33:31,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:31,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:33:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:31,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:33:31,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:33:31,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2022-11-20 10:33:31,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 160 transitions, 630 flow. Second operand has 19 states, 19 states have (on average 113.3157894736842) internal successors, (2153), 19 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:31,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:31,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2022-11-20 10:33:31,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:34,098 INFO L130 PetriNetUnfolder]: 3170/7398 cut-off events. [2022-11-20 10:33:34,098 INFO L131 PetriNetUnfolder]: For 6700/8098 co-relation queries the response was YES. [2022-11-20 10:33:34,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21704 conditions, 7398 events. 3170/7398 cut-off events. For 6700/8098 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 67036 event pairs, 712 based on Foata normal form. 1509/8774 useless extension candidates. Maximal degree in co-relation 15087. Up to 1944 conditions per place. [2022-11-20 10:33:34,123 INFO L137 encePairwiseOnDemand]: 143/160 looper letters, 0 selfloop transitions, 0 changer transitions 266/266 dead transitions. [2022-11-20 10:33:34,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 266 transitions, 1474 flow [2022-11-20 10:33:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 10:33:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 10:33:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2967 transitions. [2022-11-20 10:33:34,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7132211538461538 [2022-11-20 10:33:34,128 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2967 transitions. [2022-11-20 10:33:34,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2967 transitions. [2022-11-20 10:33:34,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:34,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2967 transitions. [2022-11-20 10:33:34,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 114.11538461538461) internal successors, (2967), 26 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:34,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:34,141 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:34,142 INFO L175 Difference]: Start difference. First operand has 198 places, 160 transitions, 630 flow. Second operand 26 states and 2967 transitions. [2022-11-20 10:33:34,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 266 transitions, 1474 flow [2022-11-20 10:33:34,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 266 transitions, 1448 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 10:33:34,174 INFO L231 Difference]: Finished difference. Result has 216 places, 0 transitions, 0 flow [2022-11-20 10:33:34,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=216, PETRI_TRANSITIONS=0} [2022-11-20 10:33:34,175 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 82 predicate places. [2022-11-20 10:33:34,175 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 0 transitions, 0 flow [2022-11-20 10:33:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.3157894736842) internal successors, (2153), 19 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:34,179 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-20 10:33:34,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 10:33:34,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 10:33:34,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 10:33:34,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 10:33:34,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 10:33:34,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-20 10:33:34,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-20 10:33:34,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-20 10:33:34,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 10:33:34,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 10:33:34,182 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 10:33:34,182 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 10:33:34,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:34,387 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:34,393 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:33:34,393 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:33:34,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:34 BasicIcfg [2022-11-20 10:33:34,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:33:34,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:33:34,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:33:34,400 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:33:34,401 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:04" (3/4) ... [2022-11-20 10:33:34,404 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:33:34,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:33:34,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:33:34,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 10:33:34,428 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-20 10:33:34,428 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:33:34,429 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:33:34,429 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:33:34,484 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:33:34,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:33:34,485 INFO L158 Benchmark]: Toolchain (without parser) took 31242.82ms. Allocated memory was 148.9MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 98.8MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 584.4MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,485 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:33:34,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.74ms. Allocated memory is still 148.9MB. Free memory was 98.5MB in the beginning and 87.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.24ms. Allocated memory is still 148.9MB. Free memory was 87.2MB in the beginning and 85.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,490 INFO L158 Benchmark]: Boogie Preprocessor took 75.76ms. Allocated memory is still 148.9MB. Free memory was 85.5MB in the beginning and 83.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,490 INFO L158 Benchmark]: RCFGBuilder took 800.11ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 64.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,491 INFO L158 Benchmark]: TraceAbstraction took 29895.04ms. Allocated memory was 148.9MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 63.8MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 748.0MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,491 INFO L158 Benchmark]: Witness Printer took 84.45ms. Allocated memory is still 4.1GB. Free memory was 3.5GB in the beginning and 3.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:33:34,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.74ms. Allocated memory is still 148.9MB. Free memory was 98.5MB in the beginning and 87.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.24ms. Allocated memory is still 148.9MB. Free memory was 87.2MB in the beginning and 85.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.76ms. Allocated memory is still 148.9MB. Free memory was 85.5MB in the beginning and 83.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 800.11ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 64.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 29895.04ms. Allocated memory was 148.9MB in the beginning and 4.1GB in the end (delta: 4.0GB). Free memory was 63.8MB in the beginning and 3.5GB in the end (delta: -3.4GB). Peak memory consumption was 748.0MB. Max. memory is 16.1GB. * Witness Printer took 84.45ms. Allocated memory is still 4.1GB. Free memory was 3.5GB in the beginning and 3.5GB 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: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: 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, 184 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 29.7s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2603 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2603 mSDsluCounter, 499 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3358 IncrementalHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 90 mSDtfsCounter, 3358 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1715 GetRequests, 1417 SyntacticMatches, 13 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=678occurred in iteration=12, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2116 NumberOfCodeBlocks, 2016 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2622 ConstructedInterpolants, 0 QuantifiedInterpolants, 5684 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2021 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 299/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:33:34,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fee7e63-6df3-4929-8739-b275b852ffe2/bin/uautomizer-ug76WZFUDN/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