./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:09:19,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:19,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:19,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:19,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:19,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:19,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:19,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:19,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:19,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:19,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:19,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:19,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:19,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:19,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:19,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:19,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:19,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:19,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:19,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:19,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:19,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:19,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:19,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:19,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:19,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:19,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:19,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:19,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:19,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:19,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:19,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:19,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:19,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:19,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:19,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:19,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:19,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:19,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:19,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:19,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:19,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:09:19,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:19,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:19,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:19,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:19,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:19,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:19,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:19,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:19,467 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:19,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:19,468 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:19,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:09:19,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:19,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:19,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:19,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:19,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:19,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:19,470 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:09:19,470 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:19,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:19,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:19,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:19,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:19,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:19,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:19,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:19,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:19,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:19,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:19,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:19,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:19,473 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:19,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:19,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:19,474 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_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2db95108d1ec3739bf941ab9d238fd5c3dd7467faa747c6c0552ae2048ee95 [2022-11-18 21:09:19,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:19,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:19,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:19,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:19,815 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:19,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-18 21:09:19,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/data/efb02b1b6/8c296313c78e433fa921181dabd4ef2e/FLAG5fe3ac062 [2022-11-18 21:09:20,501 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:20,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2022-11-18 21:09:20,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/data/efb02b1b6/8c296313c78e433fa921181dabd4ef2e/FLAG5fe3ac062 [2022-11-18 21:09:20,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/data/efb02b1b6/8c296313c78e433fa921181dabd4ef2e [2022-11-18 21:09:20,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:20,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:20,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:20,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:20,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:20,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:20" (1/1) ... [2022-11-18 21:09:20,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f96e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:20, skipping insertion in model container [2022-11-18 21:09:20,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:20" (1/1) ... [2022-11-18 21:09:20,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:20,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:21,170 WARN L234 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_75973642-a9dd-416f-b68f-eed40af202c7/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-18 21:09:21,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:21,185 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:21,217 WARN L234 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_75973642-a9dd-416f-b68f-eed40af202c7/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4604,4617] [2022-11-18 21:09:21,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:21,236 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:21,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21 WrapperNode [2022-11-18 21:09:21,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:21,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:21,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:21,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:21,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,291 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 355 [2022-11-18 21:09:21,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:21,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:21,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:21,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:21,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:21,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:21,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:21,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:21,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (1/1) ... [2022-11-18 21:09:21,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:21,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:21,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:21,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:09:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:09:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:09:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:09:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:09:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:09:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:09:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:09:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:09:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 21:09:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 21:09:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:09:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:09:21,464 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:09:21,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:21,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:22,362 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:22,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:22,657 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:09:22,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:22 BoogieIcfgContainer [2022-11-18 21:09:22,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:22,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:22,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:22,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:22,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:20" (1/3) ... [2022-11-18 21:09:22,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6451fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:22, skipping insertion in model container [2022-11-18 21:09:22,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:21" (2/3) ... [2022-11-18 21:09:22,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6451fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:22, skipping insertion in model container [2022-11-18 21:09:22,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:22" (3/3) ... [2022-11-18 21:09:22,669 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2022-11-18 21:09:22,679 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:09:22,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:22,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-18 21:09:22,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:09:22,823 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:09:22,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 281 transitions, 586 flow [2022-11-18 21:09:23,031 INFO L130 PetriNetUnfolder]: 19/278 cut-off events. [2022-11-18 21:09:23,031 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:09:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 19/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 238. Up to 2 conditions per place. [2022-11-18 21:09:23,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 281 transitions, 586 flow [2022-11-18 21:09:23,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 257 transitions, 529 flow [2022-11-18 21:09:23,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:23,091 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;@1b2e0646, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:23,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-18 21:09:23,120 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-18 21:09:23,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:09:23,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:23,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:23,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 512573450, now seen corresponding path program 1 times [2022-11-18 21:09:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:23,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541464202] [2022-11-18 21:09:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:23,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541464202] [2022-11-18 21:09:23,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541464202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:23,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:23,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582499535] [2022-11-18 21:09:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:23,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:23,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-18 21:09:23,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 257 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:23,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:23,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-18 21:09:23,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:24,734 INFO L130 PetriNetUnfolder]: 735/1433 cut-off events. [2022-11-18 21:09:24,734 INFO L131 PetriNetUnfolder]: For 206/210 co-relation queries the response was YES. [2022-11-18 21:09:24,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1433 events. 735/1433 cut-off events. For 206/210 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6617 event pairs, 526 based on Foata normal form. 210/1093 useless extension candidates. Maximal degree in co-relation 1164. Up to 592 conditions per place. [2022-11-18 21:09:24,750 INFO L137 encePairwiseOnDemand]: 241/281 looper letters, 90 selfloop transitions, 14 changer transitions 6/284 dead transitions. [2022-11-18 21:09:24,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 284 transitions, 806 flow [2022-11-18 21:09:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1149 transitions. [2022-11-18 21:09:24,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177935943060498 [2022-11-18 21:09:24,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1149 transitions. [2022-11-18 21:09:24,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1149 transitions. [2022-11-18 21:09:24,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:24,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1149 transitions. [2022-11-18 21:09:24,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.8) internal successors, (1149), 5 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:24,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:24,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:24,797 INFO L175 Difference]: Start difference. First operand has 249 places, 257 transitions, 529 flow. Second operand 5 states and 1149 transitions. [2022-11-18 21:09:24,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 284 transitions, 806 flow [2022-11-18 21:09:24,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 788 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:24,809 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 572 flow [2022-11-18 21:09:24,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2022-11-18 21:09:24,815 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, -6 predicate places. [2022-11-18 21:09:24,815 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 572 flow [2022-11-18 21:09:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.5) internal successors, (810), 4 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:24,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:24,817 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:09:24,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -39895741, now seen corresponding path program 1 times [2022-11-18 21:09:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:24,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569066763] [2022-11-18 21:09:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:24,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569066763] [2022-11-18 21:09:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569066763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80045010] [2022-11-18 21:09:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:24,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:24,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:25,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:09:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:25,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:25,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:25,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:25,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80045010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:25,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:25,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:09:25,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620959061] [2022-11-18 21:09:25,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:25,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:09:25,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:09:25,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:09:25,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-18 21:09:25,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 572 flow. Second operand has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:25,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:25,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-18 21:09:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:27,147 INFO L130 PetriNetUnfolder]: 1836/3425 cut-off events. [2022-11-18 21:09:27,148 INFO L131 PetriNetUnfolder]: For 143/153 co-relation queries the response was YES. [2022-11-18 21:09:27,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 3425 events. 1836/3425 cut-off events. For 143/153 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18828 event pairs, 1315 based on Foata normal form. 9/2089 useless extension candidates. Maximal degree in co-relation 5008. Up to 583 conditions per place. [2022-11-18 21:09:27,181 INFO L137 encePairwiseOnDemand]: 258/281 looper letters, 189 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-18 21:09:27,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 425 transitions, 1542 flow [2022-11-18 21:09:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:09:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:09:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3878 transitions. [2022-11-18 21:09:27,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7667062079873468 [2022-11-18 21:09:27,191 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3878 transitions. [2022-11-18 21:09:27,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3878 transitions. [2022-11-18 21:09:27,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:27,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3878 transitions. [2022-11-18 21:09:27,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 215.44444444444446) internal successors, (3878), 18 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,218 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,218 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 572 flow. Second operand 18 states and 3878 transitions. [2022-11-18 21:09:27,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 425 transitions, 1542 flow [2022-11-18 21:09:27,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 425 transitions, 1534 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:09:27,235 INFO L231 Difference]: Finished difference. Result has 257 places, 284 transitions, 934 flow [2022-11-18 21:09:27,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=257, PETRI_TRANSITIONS=284} [2022-11-18 21:09:27,237 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 8 predicate places. [2022-11-18 21:09:27,237 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 284 transitions, 934 flow [2022-11-18 21:09:27,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.66666666666666) internal successors, (2444), 12 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:27,240 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:27,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 21:09:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:27,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1236767130, now seen corresponding path program 1 times [2022-11-18 21:09:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:27,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724721034] [2022-11-18 21:09:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:27,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724721034] [2022-11-18 21:09:27,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724721034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962574027] [2022-11-18 21:09:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:27,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:27,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:09:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:27,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:27,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:27,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:27,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962574027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:27,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:27,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:09:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884443163] [2022-11-18 21:09:27,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:27,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:27,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-18 21:09:27,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 284 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:27,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-18 21:09:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:29,215 INFO L130 PetriNetUnfolder]: 1836/3413 cut-off events. [2022-11-18 21:09:29,216 INFO L131 PetriNetUnfolder]: For 295/305 co-relation queries the response was YES. [2022-11-18 21:09:29,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 3413 events. 1836/3413 cut-off events. For 295/305 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18608 event pairs, 1315 based on Foata normal form. 12/2080 useless extension candidates. Maximal degree in co-relation 5431. Up to 2260 conditions per place. [2022-11-18 21:09:29,251 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 91 selfloop transitions, 43 changer transitions 0/308 dead transitions. [2022-11-18 21:09:29,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 308 transitions, 1205 flow [2022-11-18 21:09:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:09:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:09:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1511 transitions. [2022-11-18 21:09:29,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.768174885612608 [2022-11-18 21:09:29,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1511 transitions. [2022-11-18 21:09:29,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1511 transitions. [2022-11-18 21:09:29,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:29,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1511 transitions. [2022-11-18 21:09:29,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.85714285714286) internal successors, (1511), 7 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:29,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:29,268 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:29,269 INFO L175 Difference]: Start difference. First operand has 257 places, 284 transitions, 934 flow. Second operand 7 states and 1511 transitions. [2022-11-18 21:09:29,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 308 transitions, 1205 flow [2022-11-18 21:09:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 308 transitions, 1089 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:29,284 INFO L231 Difference]: Finished difference. Result has 251 places, 272 transitions, 823 flow [2022-11-18 21:09:29,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=251, PETRI_TRANSITIONS=272} [2022-11-18 21:09:29,288 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 2 predicate places. [2022-11-18 21:09:29,288 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 272 transitions, 823 flow [2022-11-18 21:09:29,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.33333333333334) internal successors, (1220), 6 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:29,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:29,291 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:29,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:29,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:29,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1236068278, now seen corresponding path program 2 times [2022-11-18 21:09:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:29,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923745822] [2022-11-18 21:09:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923745822] [2022-11-18 21:09:29,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923745822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:29,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699675320] [2022-11-18 21:09:29,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:29,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:29,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:29,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:29,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:09:30,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:09:30,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:30,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:09:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:30,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:30,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699675320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:30,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:30,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 21:09:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977713517] [2022-11-18 21:09:30,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:09:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:09:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:09:30,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-18 21:09:30,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 272 transitions, 823 flow. Second operand has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:30,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:30,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-18 21:09:30,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:32,913 INFO L130 PetriNetUnfolder]: 1219/2696 cut-off events. [2022-11-18 21:09:32,913 INFO L131 PetriNetUnfolder]: For 315/322 co-relation queries the response was YES. [2022-11-18 21:09:32,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 2696 events. 1219/2696 cut-off events. For 315/322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13991 event pairs, 770 based on Foata normal form. 6/2051 useless extension candidates. Maximal degree in co-relation 3846. Up to 300 conditions per place. [2022-11-18 21:09:32,936 INFO L137 encePairwiseOnDemand]: 249/281 looper letters, 234 selfloop transitions, 97 changer transitions 0/485 dead transitions. [2022-11-18 21:09:32,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 485 transitions, 2048 flow [2022-11-18 21:09:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 21:09:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 21:09:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9234 transitions. [2022-11-18 21:09:32,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6706369380492411 [2022-11-18 21:09:32,956 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9234 transitions. [2022-11-18 21:09:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9234 transitions. [2022-11-18 21:09:32,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:32,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9234 transitions. [2022-11-18 21:09:32,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 188.44897959183675) internal successors, (9234), 49 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:33,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:33,015 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 281.0) internal successors, (14050), 50 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:33,015 INFO L175 Difference]: Start difference. First operand has 251 places, 272 transitions, 823 flow. Second operand 49 states and 9234 transitions. [2022-11-18 21:09:33,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 485 transitions, 2048 flow [2022-11-18 21:09:33,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 485 transitions, 1979 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:33,025 INFO L231 Difference]: Finished difference. Result has 293 places, 308 transitions, 1158 flow [2022-11-18 21:09:33,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1158, PETRI_PLACES=293, PETRI_TRANSITIONS=308} [2022-11-18 21:09:33,027 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 44 predicate places. [2022-11-18 21:09:33,027 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 308 transitions, 1158 flow [2022-11-18 21:09:33,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:33,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:33,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:33,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:33,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:33,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1312161369, now seen corresponding path program 1 times [2022-11-18 21:09:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:33,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020053392] [2022-11-18 21:09:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:33,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020053392] [2022-11-18 21:09:33,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020053392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:33,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:33,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:33,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912260024] [2022-11-18 21:09:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:33,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:33,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:33,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:33,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:09:33,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-18 21:09:33,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 308 transitions, 1158 flow. Second operand has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:33,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:33,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-18 21:09:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:34,319 INFO L130 PetriNetUnfolder]: 1059/2462 cut-off events. [2022-11-18 21:09:34,320 INFO L131 PetriNetUnfolder]: For 534/541 co-relation queries the response was YES. [2022-11-18 21:09:34,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 2462 events. 1059/2462 cut-off events. For 534/541 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12555 event pairs, 668 based on Foata normal form. 16/1928 useless extension candidates. Maximal degree in co-relation 4398. Up to 1607 conditions per place. [2022-11-18 21:09:34,342 INFO L137 encePairwiseOnDemand]: 270/281 looper letters, 124 selfloop transitions, 7 changer transitions 0/319 dead transitions. [2022-11-18 21:09:34,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 319 transitions, 1448 flow [2022-11-18 21:09:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:09:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:09:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1466 transitions. [2022-11-18 21:09:34,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7452974072191154 [2022-11-18 21:09:34,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1466 transitions. [2022-11-18 21:09:34,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1466 transitions. [2022-11-18 21:09:34,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:34,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1466 transitions. [2022-11-18 21:09:34,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.42857142857142) internal successors, (1466), 7 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:34,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:34,364 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:34,364 INFO L175 Difference]: Start difference. First operand has 293 places, 308 transitions, 1158 flow. Second operand 7 states and 1466 transitions. [2022-11-18 21:09:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 319 transitions, 1448 flow [2022-11-18 21:09:34,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 319 transitions, 1325 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-18 21:09:34,373 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 1058 flow [2022-11-18 21:09:34,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1058, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-18 21:09:34,377 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 36 predicate places. [2022-11-18 21:09:34,378 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 1058 flow [2022-11-18 21:09:34,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:34,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:34,379 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:34,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:09:34,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 925704683, now seen corresponding path program 1 times [2022-11-18 21:09:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:34,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385300894] [2022-11-18 21:09:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:34,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:34,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385300894] [2022-11-18 21:09:34,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385300894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703270837] [2022-11-18 21:09:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:34,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:34,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:34,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:09:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:35,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:09:35,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:35,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703270837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:35,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 21:09:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096028616] [2022-11-18 21:09:35,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 21:09:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 21:09:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 21:09:35,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-18 21:09:35,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 1058 flow. Second operand has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:35,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:35,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-18 21:09:35,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:38,893 INFO L130 PetriNetUnfolder]: 2451/5453 cut-off events. [2022-11-18 21:09:38,893 INFO L131 PetriNetUnfolder]: For 1222/1237 co-relation queries the response was YES. [2022-11-18 21:09:38,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 5453 events. 2451/5453 cut-off events. For 1222/1237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 31786 event pairs, 1548 based on Foata normal form. 16/4199 useless extension candidates. Maximal degree in co-relation 11058. Up to 1121 conditions per place. [2022-11-18 21:09:38,932 INFO L137 encePairwiseOnDemand]: 262/281 looper letters, 480 selfloop transitions, 160 changer transitions 0/820 dead transitions. [2022-11-18 21:09:38,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 820 transitions, 4120 flow [2022-11-18 21:09:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 21:09:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 21:09:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9500 transitions. [2022-11-18 21:09:38,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683597541248787 [2022-11-18 21:09:38,955 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9500 transitions. [2022-11-18 21:09:38,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9500 transitions. [2022-11-18 21:09:38,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:38,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9500 transitions. [2022-11-18 21:09:38,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 215.9090909090909) internal successors, (9500), 44 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:39,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:39,018 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 281.0) internal successors, (12645), 45 states have internal predecessors, (12645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:39,019 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 1058 flow. Second operand 44 states and 9500 transitions. [2022-11-18 21:09:39,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 820 transitions, 4120 flow [2022-11-18 21:09:39,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 820 transitions, 4110 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:09:39,042 INFO L231 Difference]: Finished difference. Result has 333 places, 401 transitions, 2058 flow [2022-11-18 21:09:39,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2058, PETRI_PLACES=333, PETRI_TRANSITIONS=401} [2022-11-18 21:09:39,046 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 84 predicate places. [2022-11-18 21:09:39,046 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 401 transitions, 2058 flow [2022-11-18 21:09:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:39,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:39,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:39,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:39,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1006353454, now seen corresponding path program 1 times [2022-11-18 21:09:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:39,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046582681] [2022-11-18 21:09:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:39,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:39,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046582681] [2022-11-18 21:09:39,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046582681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:39,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173289105] [2022-11-18 21:09:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:39,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:39,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:39,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:39,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:09:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:39,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:39,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:09:39,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:39,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173289105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:39,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:39,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 21:09:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322732421] [2022-11-18 21:09:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:39,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:39,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:39,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:09:39,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-18 21:09:39,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 401 transitions, 2058 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:39,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:39,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-18 21:09:39,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:40,974 INFO L130 PetriNetUnfolder]: 1457/3955 cut-off events. [2022-11-18 21:09:40,974 INFO L131 PetriNetUnfolder]: For 1324/1339 co-relation queries the response was YES. [2022-11-18 21:09:40,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 3955 events. 1457/3955 cut-off events. For 1324/1339 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 21963 event pairs, 792 based on Foata normal form. 0/3483 useless extension candidates. Maximal degree in co-relation 7159. Up to 2230 conditions per place. [2022-11-18 21:09:41,000 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 18 selfloop transitions, 3 changer transitions 0/399 dead transitions. [2022-11-18 21:09:41,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 399 transitions, 2092 flow [2022-11-18 21:09:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:09:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:09:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2022-11-18 21:09:41,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425266903914591 [2022-11-18 21:09:41,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2022-11-18 21:09:41,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2022-11-18 21:09:41,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:41,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2022-11-18 21:09:41,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:41,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:41,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:41,010 INFO L175 Difference]: Start difference. First operand has 333 places, 401 transitions, 2058 flow. Second operand 4 states and 947 transitions. [2022-11-18 21:09:41,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 399 transitions, 2092 flow [2022-11-18 21:09:41,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 399 transitions, 1990 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 21:09:41,031 INFO L231 Difference]: Finished difference. Result has 319 places, 399 transitions, 1954 flow [2022-11-18 21:09:41,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1954, PETRI_PLACES=319, PETRI_TRANSITIONS=399} [2022-11-18 21:09:41,033 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 70 predicate places. [2022-11-18 21:09:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 399 transitions, 1954 flow [2022-11-18 21:09:41,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:41,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:41,035 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:41,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:41,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:41,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 738063953, now seen corresponding path program 1 times [2022-11-18 21:09:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211943812] [2022-11-18 21:09:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:41,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:09:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:41,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211943812] [2022-11-18 21:09:41,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211943812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:41,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:41,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126669227] [2022-11-18 21:09:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:41,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:41,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:41,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:09:41,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 281 [2022-11-18 21:09:41,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 399 transitions, 1954 flow. Second operand has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:41,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:41,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 281 [2022-11-18 21:09:41,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:43,221 INFO L130 PetriNetUnfolder]: 2092/5980 cut-off events. [2022-11-18 21:09:43,221 INFO L131 PetriNetUnfolder]: For 2170/2200 co-relation queries the response was YES. [2022-11-18 21:09:43,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 5980 events. 2092/5980 cut-off events. For 2170/2200 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 39966 event pairs, 1231 based on Foata normal form. 256/5604 useless extension candidates. Maximal degree in co-relation 11245. Up to 2308 conditions per place. [2022-11-18 21:09:43,258 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 194 selfloop transitions, 30 changer transitions 18/457 dead transitions. [2022-11-18 21:09:43,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 457 transitions, 2737 flow [2022-11-18 21:09:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:09:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:09:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1876 transitions. [2022-11-18 21:09:43,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.741795175958877 [2022-11-18 21:09:43,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1876 transitions. [2022-11-18 21:09:43,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1876 transitions. [2022-11-18 21:09:43,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:43,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1876 transitions. [2022-11-18 21:09:43,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.44444444444446) internal successors, (1876), 9 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:43,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:43,273 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:43,273 INFO L175 Difference]: Start difference. First operand has 319 places, 399 transitions, 1954 flow. Second operand 9 states and 1876 transitions. [2022-11-18 21:09:43,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 457 transitions, 2737 flow [2022-11-18 21:09:43,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 457 transitions, 2731 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:09:43,296 INFO L231 Difference]: Finished difference. Result has 325 places, 400 transitions, 2021 flow [2022-11-18 21:09:43,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2021, PETRI_PLACES=325, PETRI_TRANSITIONS=400} [2022-11-18 21:09:43,298 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 76 predicate places. [2022-11-18 21:09:43,298 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 400 transitions, 2021 flow [2022-11-18 21:09:43,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:43,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:43,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:43,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:09:43,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1026954275, now seen corresponding path program 1 times [2022-11-18 21:09:43,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:43,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699235883] [2022-11-18 21:09:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:09:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699235883] [2022-11-18 21:09:43,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699235883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093839163] [2022-11-18 21:09:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:43,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:43,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:43,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:09:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:43,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:43,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:09:44,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:44,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093839163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:44,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:44,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 21:09:44,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689605055] [2022-11-18 21:09:44,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:44,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:44,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:44,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:09:44,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 281 [2022-11-18 21:09:44,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 400 transitions, 2021 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:44,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:44,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 281 [2022-11-18 21:09:44,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:45,340 INFO L130 PetriNetUnfolder]: 1557/5161 cut-off events. [2022-11-18 21:09:45,340 INFO L131 PetriNetUnfolder]: For 1751/1781 co-relation queries the response was YES. [2022-11-18 21:09:45,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5161 events. 1557/5161 cut-off events. For 1751/1781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 34942 event pairs, 878 based on Foata normal form. 0/4841 useless extension candidates. Maximal degree in co-relation 9376. Up to 2534 conditions per place. [2022-11-18 21:09:45,370 INFO L137 encePairwiseOnDemand]: 276/281 looper letters, 9 selfloop transitions, 3 changer transitions 69/398 dead transitions. [2022-11-18 21:09:45,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 398 transitions, 2063 flow [2022-11-18 21:09:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:09:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 21:09:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2022-11-18 21:09:45,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8407473309608541 [2022-11-18 21:09:45,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2022-11-18 21:09:45,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2022-11-18 21:09:45,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:45,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2022-11-18 21:09:45,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,380 INFO L175 Difference]: Start difference. First operand has 325 places, 400 transitions, 2021 flow. Second operand 4 states and 945 transitions. [2022-11-18 21:09:45,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 398 transitions, 2063 flow [2022-11-18 21:09:45,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 398 transitions, 2029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:09:45,404 INFO L231 Difference]: Finished difference. Result has 323 places, 329 transitions, 1816 flow [2022-11-18 21:09:45,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1816, PETRI_PLACES=323, PETRI_TRANSITIONS=329} [2022-11-18 21:09:45,405 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 74 predicate places. [2022-11-18 21:09:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 329 transitions, 1816 flow [2022-11-18 21:09:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:45,407 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:45,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 21:09:45,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:45,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1100458987, now seen corresponding path program 2 times [2022-11-18 21:09:45,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:45,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946325925] [2022-11-18 21:09:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:45,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:46,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:46,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946325925] [2022-11-18 21:09:46,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946325925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:46,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806436929] [2022-11-18 21:09:46,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:46,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:46,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:46,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:46,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:09:46,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:09:46,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:46,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:09:46,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-18 21:09:47,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-18 21:09:47,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806436929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:47,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:47,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-18 21:09:47,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261206612] [2022-11-18 21:09:47,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:47,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 21:09:47,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:47,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 21:09:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 21:09:47,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-18 21:09:47,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 329 transitions, 1816 flow. Second operand has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:47,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:47,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-18 21:09:47,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:52,558 INFO L130 PetriNetUnfolder]: 35/1291 cut-off events. [2022-11-18 21:09:52,558 INFO L131 PetriNetUnfolder]: For 2099/2099 co-relation queries the response was YES. [2022-11-18 21:09:52,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 1291 events. 35/1291 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4949 event pairs, 0 based on Foata normal form. 6/1297 useless extension candidates. Maximal degree in co-relation 2967. Up to 112 conditions per place. [2022-11-18 21:09:52,562 INFO L137 encePairwiseOnDemand]: 255/281 looper letters, 253 selfloop transitions, 269 changer transitions 0/627 dead transitions. [2022-11-18 21:09:52,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 627 transitions, 3977 flow [2022-11-18 21:09:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-18 21:09:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-18 21:09:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 24961 transitions. [2022-11-18 21:09:52,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6579939369974958 [2022-11-18 21:09:52,590 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 24961 transitions. [2022-11-18 21:09:52,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 24961 transitions. [2022-11-18 21:09:52,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:52,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 24961 transitions. [2022-11-18 21:09:52,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 184.8962962962963) internal successors, (24961), 135 states have internal predecessors, (24961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:52,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:52,697 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 281.0) internal successors, (38216), 136 states have internal predecessors, (38216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:52,698 INFO L175 Difference]: Start difference. First operand has 323 places, 329 transitions, 1816 flow. Second operand 135 states and 24961 transitions. [2022-11-18 21:09:52,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 627 transitions, 3977 flow [2022-11-18 21:09:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 627 transitions, 3888 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:09:52,722 INFO L231 Difference]: Finished difference. Result has 391 places, 424 transitions, 2769 flow [2022-11-18 21:09:52,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=2769, PETRI_PLACES=391, PETRI_TRANSITIONS=424} [2022-11-18 21:09:52,724 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 142 predicate places. [2022-11-18 21:09:52,724 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 424 transitions, 2769 flow [2022-11-18 21:09:52,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 184.76315789473685) internal successors, (7021), 38 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:52,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:52,727 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:52,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 21:09:52,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:09:52,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:09:52,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash -423109273, now seen corresponding path program 1 times [2022-11-18 21:09:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:52,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685993438] [2022-11-18 21:09:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:52,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685993438] [2022-11-18 21:09:54,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685993438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384105874] [2022-11-18 21:09:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:54,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:54,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:09:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:54,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 21:09:54,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:54,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:56,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384105874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:56,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:56,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-11-18 21:09:56,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840308139] [2022-11-18 21:09:56,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:56,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-18 21:09:56,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:56,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-18 21:09:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 21:09:56,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 281 [2022-11-18 21:09:56,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 424 transitions, 2769 flow. Second operand has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:56,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 281 [2022-11-18 21:09:56,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:00,834 INFO L130 PetriNetUnfolder]: 71/2226 cut-off events. [2022-11-18 21:10:00,834 INFO L131 PetriNetUnfolder]: For 6068/6068 co-relation queries the response was YES. [2022-11-18 21:10:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 2226 events. 71/2226 cut-off events. For 6068/6068 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8861 event pairs, 0 based on Foata normal form. 18/2244 useless extension candidates. Maximal degree in co-relation 5516. Up to 217 conditions per place. [2022-11-18 21:10:00,841 INFO L137 encePairwiseOnDemand]: 263/281 looper letters, 497 selfloop transitions, 380 changer transitions 0/1066 dead transitions. [2022-11-18 21:10:00,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1066 transitions, 8526 flow [2022-11-18 21:10:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-18 21:10:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-11-18 21:10:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 21799 transitions. [2022-11-18 21:10:00,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459280043799617 [2022-11-18 21:10:00,864 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 21799 transitions. [2022-11-18 21:10:00,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 21799 transitions. [2022-11-18 21:10:00,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:00,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 21799 transitions. [2022-11-18 21:10:00,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 209.60576923076923) internal successors, (21799), 104 states have internal predecessors, (21799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,934 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 281.0) internal successors, (29505), 105 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,934 INFO L175 Difference]: Start difference. First operand has 391 places, 424 transitions, 2769 flow. Second operand 104 states and 21799 transitions. [2022-11-18 21:10:00,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1066 transitions, 8526 flow [2022-11-18 21:10:00,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1066 transitions, 7958 flow, removed 162 selfloop flow, removed 28 redundant places. [2022-11-18 21:10:00,982 INFO L231 Difference]: Finished difference. Result has 485 places, 627 transitions, 5327 flow [2022-11-18 21:10:00,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=5327, PETRI_PLACES=485, PETRI_TRANSITIONS=627} [2022-11-18 21:10:00,984 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 236 predicate places. [2022-11-18 21:10:00,984 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 627 transitions, 5327 flow [2022-11-18 21:10:00,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 204.44444444444446) internal successors, (14720), 72 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:00,987 INFO L209 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:00,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:01,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:10:01,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 21:10:01,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash -169415609, now seen corresponding path program 2 times [2022-11-18 21:10:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:01,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441354761] [2022-11-18 21:10:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:01,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:06,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:06,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441354761] [2022-11-18 21:10:06,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441354761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:06,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604077940] [2022-11-18 21:10:06,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:10:06,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:06,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:06,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:06,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:10:06,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:10:06,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:10:06,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:10:06,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-18 21:10:07,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-11-18 21:10:07,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604077940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:07,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:07,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-11-18 21:10:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192747129] [2022-11-18 21:10:07,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-18 21:10:07,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-18 21:10:07,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-11-18 21:10:07,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 281 [2022-11-18 21:10:07,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 627 transitions, 5327 flow. Second operand has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:07,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:07,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 281 [2022-11-18 21:10:07,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:24,304 INFO L130 PetriNetUnfolder]: 75/2340 cut-off events. [2022-11-18 21:10:24,304 INFO L131 PetriNetUnfolder]: For 6583/6583 co-relation queries the response was YES. [2022-11-18 21:10:24,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 2340 events. 75/2340 cut-off events. For 6583/6583 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9396 event pairs, 0 based on Foata normal form. 2/2342 useless extension candidates. Maximal degree in co-relation 6235. Up to 209 conditions per place. [2022-11-18 21:10:24,315 INFO L137 encePairwiseOnDemand]: 256/281 looper letters, 0 selfloop transitions, 0 changer transitions 1258/1258 dead transitions. [2022-11-18 21:10:24,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 1258 transitions, 10361 flow [2022-11-18 21:10:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-11-18 21:10:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2022-11-18 21:10:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 54337 transitions. [2022-11-18 21:10:24,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577214515699519 [2022-11-18 21:10:24,368 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 54337 transitions. [2022-11-18 21:10:24,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 54337 transitions. [2022-11-18 21:10:24,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:24,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 54337 transitions. [2022-11-18 21:10:24,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 184.81972789115648) internal successors, (54337), 294 states have internal predecessors, (54337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,545 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 281.0) internal successors, (82895), 295 states have internal predecessors, (82895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,545 INFO L175 Difference]: Start difference. First operand has 485 places, 627 transitions, 5327 flow. Second operand 294 states and 54337 transitions. [2022-11-18 21:10:24,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 1258 transitions, 10361 flow [2022-11-18 21:10:24,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 1258 transitions, 9859 flow, removed 3 selfloop flow, removed 79 redundant places. [2022-11-18 21:10:24,621 INFO L231 Difference]: Finished difference. Result has 698 places, 0 transitions, 0 flow [2022-11-18 21:10:24,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=294, PETRI_FLOW=0, PETRI_PLACES=698, PETRI_TRANSITIONS=0} [2022-11-18 21:10:24,623 INFO L288 CegarLoopForPetriNet]: 249 programPoint places, 449 predicate places. [2022-11-18 21:10:24,623 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 0 transitions, 0 flow [2022-11-18 21:10:24,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 184.73076923076923) internal successors, (14409), 78 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2022-11-18 21:10:24,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-18 21:10:24,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-18 21:10:24,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-18 21:10:24,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-18 21:10:24,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-18 21:10:24,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-18 21:10:24,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-18 21:10:24,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-18 21:10:24,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-18 21:10:24,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-18 21:10:24,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-18 21:10:24,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-18 21:10:24,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-18 21:10:24,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-18 21:10:24,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-18 21:10:24,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-18 21:10:24,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-18 21:10:24,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-18 21:10:24,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-18 21:10:24,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-18 21:10:24,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-18 21:10:24,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2022-11-18 21:10:24,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2022-11-18 21:10:24,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2022-11-18 21:10:24,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-18 21:10:24,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-18 21:10:24,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-18 21:10:24,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-18 21:10:24,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-18 21:10:24,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-18 21:10:24,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-18 21:10:24,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-18 21:10:24,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-18 21:10:24,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-18 21:10:24,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-18 21:10:24,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-18 21:10:24,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-18 21:10:24,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-18 21:10:24,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-18 21:10:24,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-18 21:10:24,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:24,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 21:10:24,843 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:24,850 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 21:10:24,851 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 21:10:24,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:10:24 BasicIcfg [2022-11-18 21:10:24,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 21:10:24,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 21:10:24,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 21:10:24,859 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 21:10:24,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:22" (3/4) ... [2022-11-18 21:10:24,863 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 21:10:24,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 21:10:24,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 21:10:24,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 21:10:24,878 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-11-18 21:10:24,879 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 21:10:24,879 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 21:10:24,879 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 21:10:24,959 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 21:10:24,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 21:10:24,961 INFO L158 Benchmark]: Toolchain (without parser) took 64116.98ms. Allocated memory was 148.9MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 117.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-18 21:10:24,961 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 49.5MB in the beginning and 49.4MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:10:24,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.80ms. Allocated memory is still 148.9MB. Free memory was 117.2MB in the beginning and 122.8MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:10:24,962 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.84ms. Allocated memory is still 148.9MB. Free memory was 122.8MB in the beginning and 120.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 21:10:24,962 INFO L158 Benchmark]: Boogie Preprocessor took 51.90ms. Allocated memory is still 148.9MB. Free memory was 120.2MB in the beginning and 117.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:10:24,962 INFO L158 Benchmark]: RCFGBuilder took 1315.27ms. Allocated memory is still 148.9MB. Free memory was 117.7MB in the beginning and 95.5MB in the end (delta: 22.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-18 21:10:24,963 INFO L158 Benchmark]: TraceAbstraction took 62196.37ms. Allocated memory was 148.9MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 94.8MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-18 21:10:24,963 INFO L158 Benchmark]: Witness Printer took 101.21ms. Allocated memory is still 3.7GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 21:10:24,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 49.5MB in the beginning and 49.4MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.80ms. Allocated memory is still 148.9MB. Free memory was 117.2MB in the beginning and 122.8MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.84ms. Allocated memory is still 148.9MB. Free memory was 122.8MB in the beginning and 120.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.90ms. Allocated memory is still 148.9MB. Free memory was 120.2MB in the beginning and 117.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1315.27ms. Allocated memory is still 148.9MB. Free memory was 117.7MB in the beginning and 95.5MB in the end (delta: 22.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 62196.37ms. Allocated memory was 148.9MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 94.8MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 101.21ms. Allocated memory is still 3.7GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 308 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 62.0s, OverallIterations: 12, TraceHistogramMax: 35, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12724 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12724 mSDsluCounter, 1304 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1102 mSDsCounter, 1572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5891 IncrementalHoareTripleChecker+Invalid, 7463 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1572 mSolverCounterUnsat, 202 mSDtfsCounter, 5891 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3780 GetRequests, 2909 SyntacticMatches, 15 SemanticMatches, 856 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67449 ImplicationChecksByTransitivity, 25.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5327occurred in iteration=11, InterpolantAutomatonStates: 680, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 3704 NumberOfCodeBlocks, 3236 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4946 ConstructedInterpolants, 0 QuantifiedInterpolants, 10494 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2704 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 11960/22782 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 21:10:24,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75973642-a9dd-416f-b68f-eed40af202c7/bin/uautomizer-TMbwUNV5ro/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