./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:50:59,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:50:59,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:50:59,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:50:59,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:50:59,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:50:59,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:50:59,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:50:59,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:50:59,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:50:59,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:50:59,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:50:59,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:50:59,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:50:59,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:50:59,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:50:59,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:50:59,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:50:59,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:50:59,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:50:59,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:50:59,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:50:59,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:50:59,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:50:59,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:50:59,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:50:59,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:50:59,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:50:59,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:50:59,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:50:59,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:50:59,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:50:59,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:50:59,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:50:59,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:50:59,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:50:59,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:50:59,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:50:59,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:50:59,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:50:59,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:50:59,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:50:59,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:50:59,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:50:59,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:50:59,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:50:59,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:50:59,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:50:59,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:50:59,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:50:59,395 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:50:59,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:50:59,396 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:50:59,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:50:59,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:50:59,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:50:59,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:50:59,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:50:59,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:50:59,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:50:59,398 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:50:59,398 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:50:59,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:50:59,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:50:59,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:50:59,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:50:59,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:50:59,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:50:59,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:50:59,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:50:59,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:50:59,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:50:59,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:50:59,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:50:59,401 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:50:59,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:50:59,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:50:59,401 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_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-11-21 16:50:59,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:50:59,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:50:59,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:50:59,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:50:59,784 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:50:59,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-21 16:51:02,842 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:51:03,146 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:51:03,158 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-21 16:51:03,167 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/data/bf4ebd691/51ad0c3551f74ebf85feb8441d19d318/FLAGb09780936 [2022-11-21 16:51:03,188 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/data/bf4ebd691/51ad0c3551f74ebf85feb8441d19d318 [2022-11-21 16:51:03,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:51:03,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:51:03,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:51:03,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:51:03,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:51:03,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531faeeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03, skipping insertion in model container [2022-11-21 16:51:03,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:51:03,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:51:03,525 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-21 16:51:03,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:51:03,543 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:51:03,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-21 16:51:03,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:51:03,594 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:51:03,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03 WrapperNode [2022-11-21 16:51:03,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:51:03,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:51:03,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:51:03,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:51:03,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,659 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 421 [2022-11-21 16:51:03,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:51:03,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:51:03,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:51:03,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:51:03,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:51:03,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:51:03,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:51:03,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:51:03,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (1/1) ... [2022-11-21 16:51:03,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:51:03,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:03,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:51:03,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:51:03,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:51:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:51:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:51:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:51:03,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:51:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:51:03,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:51:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:51:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:51:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:51:03,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:51:03,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:51:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:51:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:51:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:51:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:51:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:51:03,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:51:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:51:03,812 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:51:04,029 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:51:04,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:51:04,804 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:51:05,169 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:51:05,170 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-21 16:51:05,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:51:05 BoogieIcfgContainer [2022-11-21 16:51:05,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:51:05,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:51:05,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:51:05,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:51:05,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:51:03" (1/3) ... [2022-11-21 16:51:05,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed81fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:51:05, skipping insertion in model container [2022-11-21 16:51:05,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:51:03" (2/3) ... [2022-11-21 16:51:05,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bed81fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:51:05, skipping insertion in model container [2022-11-21 16:51:05,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:51:05" (3/3) ... [2022-11-21 16:51:05,190 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-11-21 16:51:05,199 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:51:05,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:51:05,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-21 16:51:05,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:51:05,364 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:51:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 449 transitions, 922 flow [2022-11-21 16:51:05,683 INFO L130 PetriNetUnfolder]: 37/446 cut-off events. [2022-11-21 16:51:05,683 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:51:05,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 446 events. 37/446 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 592 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2022-11-21 16:51:05,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 449 transitions, 922 flow [2022-11-21 16:51:05,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 425 transitions, 865 flow [2022-11-21 16:51:05,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:51:05,735 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;@440bec0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:51:05,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-21 16:51:05,749 INFO L130 PetriNetUnfolder]: 3/96 cut-off events. [2022-11-21 16:51:05,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:51:05,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:05,752 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] [2022-11-21 16:51:05,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash -555151016, now seen corresponding path program 1 times [2022-11-21 16:51:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:05,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088313159] [2022-11-21 16:51:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:06,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088313159] [2022-11-21 16:51:06,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088313159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:06,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:06,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:51:06,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481702246] [2022-11-21 16:51:06,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:06,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:51:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:06,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:51:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:51:06,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-21 16:51:06,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 425 transitions, 865 flow. Second operand has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:06,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:06,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-21 16:51:06,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:07,083 INFO L130 PetriNetUnfolder]: 173/1029 cut-off events. [2022-11-21 16:51:07,084 INFO L131 PetriNetUnfolder]: For 88/96 co-relation queries the response was YES. [2022-11-21 16:51:07,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 1029 events. 173/1029 cut-off events. For 88/96 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4452 event pairs, 100 based on Foata normal form. 154/911 useless extension candidates. Maximal degree in co-relation 862. Up to 180 conditions per place. [2022-11-21 16:51:07,103 INFO L137 encePairwiseOnDemand]: 390/449 looper letters, 90 selfloop transitions, 19 changer transitions 12/441 dead transitions. [2022-11-21 16:51:07,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 441 transitions, 1130 flow [2022-11-21 16:51:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:51:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:51:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1938 transitions. [2022-11-21 16:51:07,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632516703786192 [2022-11-21 16:51:07,132 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1938 transitions. [2022-11-21 16:51:07,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1938 transitions. [2022-11-21 16:51:07,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:07,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1938 transitions. [2022-11-21 16:51:07,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 387.6) internal successors, (1938), 5 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:07,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:07,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:07,161 INFO L175 Difference]: Start difference. First operand has 399 places, 425 transitions, 865 flow. Second operand 5 states and 1938 transitions. [2022-11-21 16:51:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 441 transitions, 1130 flow [2022-11-21 16:51:07,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 441 transitions, 1112 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:51:07,179 INFO L231 Difference]: Finished difference. Result has 395 places, 396 transitions, 909 flow [2022-11-21 16:51:07,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=909, PETRI_PLACES=395, PETRI_TRANSITIONS=396} [2022-11-21 16:51:07,185 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, -4 predicate places. [2022-11-21 16:51:07,185 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 396 transitions, 909 flow [2022-11-21 16:51:07,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:07,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:07,187 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:07,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:51:07,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:07,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1843878715, now seen corresponding path program 1 times [2022-11-21 16:51:07,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:07,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400413549] [2022-11-21 16:51:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:07,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:07,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400413549] [2022-11-21 16:51:07,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400413549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:51:07,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478816932] [2022-11-21 16:51:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:07,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:51:07,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:51:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:51:07,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:07,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:51:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:07,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478816932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:51:07,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:51:07,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:51:07,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108942849] [2022-11-21 16:51:07,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:51:07,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:51:07,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:51:07,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:51:07,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-21 16:51:07,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 396 transitions, 909 flow. Second operand has 12 states, 12 states have (on average 355.6666666666667) internal successors, (4268), 12 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:07,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:07,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-21 16:51:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:09,271 INFO L130 PetriNetUnfolder]: 431/2332 cut-off events. [2022-11-21 16:51:09,271 INFO L131 PetriNetUnfolder]: For 89/109 co-relation queries the response was YES. [2022-11-21 16:51:09,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3514 conditions, 2332 events. 431/2332 cut-off events. For 89/109 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14295 event pairs, 250 based on Foata normal form. 12/1724 useless extension candidates. Maximal degree in co-relation 2268. Up to 169 conditions per place. [2022-11-21 16:51:09,305 INFO L137 encePairwiseOnDemand]: 418/449 looper letters, 177 selfloop transitions, 84 changer transitions 0/581 dead transitions. [2022-11-21 16:51:09,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 581 transitions, 1931 flow [2022-11-21 16:51:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:51:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:51:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6627 transitions. [2022-11-21 16:51:09,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819970304380104 [2022-11-21 16:51:09,319 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6627 transitions. [2022-11-21 16:51:09,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6627 transitions. [2022-11-21 16:51:09,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:09,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6627 transitions. [2022-11-21 16:51:09,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 368.1666666666667) internal successors, (6627), 18 states have internal predecessors, (6627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:09,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 449.0) internal successors, (8531), 19 states have internal predecessors, (8531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:09,410 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 449.0) internal successors, (8531), 19 states have internal predecessors, (8531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:09,410 INFO L175 Difference]: Start difference. First operand has 395 places, 396 transitions, 909 flow. Second operand 18 states and 6627 transitions. [2022-11-21 16:51:09,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 581 transitions, 1931 flow [2022-11-21 16:51:09,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 581 transitions, 1920 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:51:09,427 INFO L231 Difference]: Finished difference. Result has 403 places, 453 transitions, 1400 flow [2022-11-21 16:51:09,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1400, PETRI_PLACES=403, PETRI_TRANSITIONS=453} [2022-11-21 16:51:09,429 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 4 predicate places. [2022-11-21 16:51:09,429 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 453 transitions, 1400 flow [2022-11-21 16:51:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 355.6666666666667) internal successors, (4268), 12 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:09,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:09,433 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:09,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:09,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1325666468, now seen corresponding path program 1 times [2022-11-21 16:51:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:09,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739342965] [2022-11-21 16:51:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:09,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739342965] [2022-11-21 16:51:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739342965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:51:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344825010] [2022-11-21 16:51:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:09,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:09,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:51:09,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:51:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:51:09,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:10,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:51:10,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344825010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:10,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:51:10,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:51:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094347967] [2022-11-21 16:51:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:51:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:51:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:51:10,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-21 16:51:10,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 453 transitions, 1400 flow. Second operand has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:10,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:10,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-21 16:51:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:11,058 INFO L130 PetriNetUnfolder]: 431/2316 cut-off events. [2022-11-21 16:51:11,059 INFO L131 PetriNetUnfolder]: For 299/319 co-relation queries the response was YES. [2022-11-21 16:51:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 2316 events. 431/2316 cut-off events. For 299/319 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14237 event pairs, 250 based on Foata normal form. 16/1712 useless extension candidates. Maximal degree in co-relation 2816. Up to 576 conditions per place. [2022-11-21 16:51:11,089 INFO L137 encePairwiseOnDemand]: 426/449 looper letters, 91 selfloop transitions, 59 changer transitions 0/470 dead transitions. [2022-11-21 16:51:11,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 470 transitions, 1672 flow [2022-11-21 16:51:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:51:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:51:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2580 transitions. [2022-11-21 16:51:11,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8208717785555202 [2022-11-21 16:51:11,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2580 transitions. [2022-11-21 16:51:11,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2580 transitions. [2022-11-21 16:51:11,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:11,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2580 transitions. [2022-11-21 16:51:11,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 368.57142857142856) internal successors, (2580), 7 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:11,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:11,112 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:11,112 INFO L175 Difference]: Start difference. First operand has 403 places, 453 transitions, 1400 flow. Second operand 7 states and 2580 transitions. [2022-11-21 16:51:11,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 470 transitions, 1672 flow [2022-11-21 16:51:11,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 470 transitions, 1514 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-21 16:51:11,127 INFO L231 Difference]: Finished difference. Result has 396 places, 437 transitions, 1252 flow [2022-11-21 16:51:11,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1252, PETRI_PLACES=396, PETRI_TRANSITIONS=437} [2022-11-21 16:51:11,129 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, -3 predicate places. [2022-11-21 16:51:11,129 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 437 transitions, 1252 flow [2022-11-21 16:51:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:11,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:11,131 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:11,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:11,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:11,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1858938856, now seen corresponding path program 2 times [2022-11-21 16:51:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:11,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961873141] [2022-11-21 16:51:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:11,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:11,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961873141] [2022-11-21 16:51:11,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961873141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:51:11,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124266490] [2022-11-21 16:51:11,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:51:11,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:11,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:11,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:51:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:51:11,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:51:11,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:51:11,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:51:11,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:51:12,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:51:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:51:12,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124266490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:51:12,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:51:12,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:51:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457025674] [2022-11-21 16:51:12,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:51:12,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:51:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:51:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:51:12,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 449 [2022-11-21 16:51:12,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 437 transitions, 1252 flow. Second operand has 18 states, 18 states have (on average 330.6111111111111) internal successors, (5951), 18 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:12,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:12,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 449 [2022-11-21 16:51:12,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:15,141 INFO L130 PetriNetUnfolder]: 1037/4099 cut-off events. [2022-11-21 16:51:15,142 INFO L131 PetriNetUnfolder]: For 406/434 co-relation queries the response was YES. [2022-11-21 16:51:15,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 4099 events. 1037/4099 cut-off events. For 406/434 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28801 event pairs, 623 based on Foata normal form. 8/2784 useless extension candidates. Maximal degree in co-relation 4728. Up to 271 conditions per place. [2022-11-21 16:51:15,197 INFO L137 encePairwiseOnDemand]: 413/449 looper letters, 256 selfloop transitions, 129 changer transitions 0/679 dead transitions. [2022-11-21 16:51:15,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 679 transitions, 2685 flow [2022-11-21 16:51:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:51:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 16:51:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 16416 transitions. [2022-11-21 16:51:15,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461479023680742 [2022-11-21 16:51:15,231 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 16416 transitions. [2022-11-21 16:51:15,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 16416 transitions. [2022-11-21 16:51:15,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:15,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 16416 transitions. [2022-11-21 16:51:15,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 335.0204081632653) internal successors, (16416), 49 states have internal predecessors, (16416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:15,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 449.0) internal successors, (22450), 50 states have internal predecessors, (22450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:15,376 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 449.0) internal successors, (22450), 50 states have internal predecessors, (22450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:15,376 INFO L175 Difference]: Start difference. First operand has 396 places, 437 transitions, 1252 flow. Second operand 49 states and 16416 transitions. [2022-11-21 16:51:15,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 679 transitions, 2685 flow [2022-11-21 16:51:15,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 679 transitions, 2590 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:51:15,393 INFO L231 Difference]: Finished difference. Result has 442 places, 492 transitions, 1723 flow [2022-11-21 16:51:15,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1723, PETRI_PLACES=442, PETRI_TRANSITIONS=492} [2022-11-21 16:51:15,394 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 43 predicate places. [2022-11-21 16:51:15,395 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 492 transitions, 1723 flow [2022-11-21 16:51:15,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 330.6111111111111) internal successors, (5951), 18 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:15,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:15,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:15,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:15,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:15,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1509723864, now seen corresponding path program 1 times [2022-11-21 16:51:15,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:15,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855888318] [2022-11-21 16:51:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:15,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:15,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855888318] [2022-11-21 16:51:15,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855888318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:15,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:15,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:51:15,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62964009] [2022-11-21 16:51:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:15,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:51:15,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:51:15,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:51:15,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 449 [2022-11-21 16:51:15,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 492 transitions, 1723 flow. Second operand has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:15,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:15,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 449 [2022-11-21 16:51:15,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:17,757 INFO L130 PetriNetUnfolder]: 1184/5726 cut-off events. [2022-11-21 16:51:17,757 INFO L131 PetriNetUnfolder]: For 569/625 co-relation queries the response was YES. [2022-11-21 16:51:17,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8783 conditions, 5726 events. 1184/5726 cut-off events. For 569/625 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 47565 event pairs, 700 based on Foata normal form. 0/4060 useless extension candidates. Maximal degree in co-relation 8484. Up to 981 conditions per place. [2022-11-21 16:51:17,969 INFO L137 encePairwiseOnDemand]: 443/449 looper letters, 42 selfloop transitions, 4 changer transitions 0/513 dead transitions. [2022-11-21 16:51:17,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 513 transitions, 1863 flow [2022-11-21 16:51:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:51:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:51:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1993 transitions. [2022-11-21 16:51:17,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877505567928731 [2022-11-21 16:51:17,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1993 transitions. [2022-11-21 16:51:17,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1993 transitions. [2022-11-21 16:51:17,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:17,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1993 transitions. [2022-11-21 16:51:17,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 398.6) internal successors, (1993), 5 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:17,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:17,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:17,989 INFO L175 Difference]: Start difference. First operand has 442 places, 492 transitions, 1723 flow. Second operand 5 states and 1993 transitions. [2022-11-21 16:51:17,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 513 transitions, 1863 flow [2022-11-21 16:51:17,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 513 transitions, 1700 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-11-21 16:51:18,006 INFO L231 Difference]: Finished difference. Result has 434 places, 495 transitions, 1590 flow [2022-11-21 16:51:18,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1590, PETRI_PLACES=434, PETRI_TRANSITIONS=495} [2022-11-21 16:51:18,010 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 35 predicate places. [2022-11-21 16:51:18,011 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 495 transitions, 1590 flow [2022-11-21 16:51:18,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:18,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:18,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:51:18,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:18,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1958801088, now seen corresponding path program 1 times [2022-11-21 16:51:18,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:18,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833211654] [2022-11-21 16:51:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:18,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:18,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:18,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833211654] [2022-11-21 16:51:18,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833211654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:51:18,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721953994] [2022-11-21 16:51:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:18,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:18,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:51:18,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:51:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:18,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:51:18,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:18,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:51:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:19,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721953994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:51:19,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:51:19,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-21 16:51:19,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325468826] [2022-11-21 16:51:19,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:51:19,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 16:51:19,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:19,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 16:51:19,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:51:19,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-21 16:51:19,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 495 transitions, 1590 flow. Second operand has 32 states, 32 states have (on average 356.28125) internal successors, (11401), 32 states have internal predecessors, (11401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:19,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:19,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-21 16:51:19,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:24,961 INFO L130 PetriNetUnfolder]: 2536/12117 cut-off events. [2022-11-21 16:51:24,961 INFO L131 PetriNetUnfolder]: For 1537/1657 co-relation queries the response was YES. [2022-11-21 16:51:25,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19017 conditions, 12117 events. 2536/12117 cut-off events. For 1537/1657 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 112014 event pairs, 1500 based on Foata normal form. 32/8609 useless extension candidates. Maximal degree in co-relation 18346. Up to 630 conditions per place. [2022-11-21 16:51:25,086 INFO L137 encePairwiseOnDemand]: 423/449 looper letters, 506 selfloop transitions, 218 changer transitions 0/1053 dead transitions. [2022-11-21 16:51:25,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1053 transitions, 5003 flow [2022-11-21 16:51:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 16:51:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 16:51:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 16280 transitions. [2022-11-21 16:51:25,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8240534521158129 [2022-11-21 16:51:25,113 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 16280 transitions. [2022-11-21 16:51:25,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 16280 transitions. [2022-11-21 16:51:25,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:25,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 16280 transitions. [2022-11-21 16:51:25,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 370.0) internal successors, (16280), 44 states have internal predecessors, (16280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 449.0) internal successors, (20205), 45 states have internal predecessors, (20205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,191 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 449.0) internal successors, (20205), 45 states have internal predecessors, (20205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,191 INFO L175 Difference]: Start difference. First operand has 434 places, 495 transitions, 1590 flow. Second operand 44 states and 16280 transitions. [2022-11-21 16:51:25,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1053 transitions, 5003 flow [2022-11-21 16:51:25,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1053 transitions, 5001 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:51:25,218 INFO L231 Difference]: Finished difference. Result has 485 places, 621 transitions, 2963 flow [2022-11-21 16:51:25,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2963, PETRI_PLACES=485, PETRI_TRANSITIONS=621} [2022-11-21 16:51:25,222 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 86 predicate places. [2022-11-21 16:51:25,222 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 621 transitions, 2963 flow [2022-11-21 16:51:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 356.28125) internal successors, (11401), 32 states have internal predecessors, (11401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:25,226 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:25,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:25,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1667168391, now seen corresponding path program 1 times [2022-11-21 16:51:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:25,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202483702] [2022-11-21 16:51:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:25,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202483702] [2022-11-21 16:51:25,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202483702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:51:25,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88123842] [2022-11-21 16:51:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:25,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:25,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:25,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:51:25,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:51:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:25,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:51:25,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:51:25,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:51:25,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88123842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:25,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:51:25,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2022-11-21 16:51:25,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440861601] [2022-11-21 16:51:25,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:25,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:51:25,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:51:25,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:51:25,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 449 [2022-11-21 16:51:25,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 621 transitions, 2963 flow. Second operand has 9 states, 9 states have (on average 342.1111111111111) internal successors, (3079), 9 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:25,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:25,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 449 [2022-11-21 16:51:25,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:34,088 INFO L130 PetriNetUnfolder]: 7651/25681 cut-off events. [2022-11-21 16:51:34,088 INFO L131 PetriNetUnfolder]: For 3932/4112 co-relation queries the response was YES. [2022-11-21 16:51:34,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42466 conditions, 25681 events. 7651/25681 cut-off events. For 3932/4112 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 258635 event pairs, 4815 based on Foata normal form. 0/16471 useless extension candidates. Maximal degree in co-relation 41730. Up to 8198 conditions per place. [2022-11-21 16:51:34,368 INFO L137 encePairwiseOnDemand]: 436/449 looper letters, 353 selfloop transitions, 33 changer transitions 0/750 dead transitions. [2022-11-21 16:51:34,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 750 transitions, 4481 flow [2022-11-21 16:51:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:51:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:51:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4184 transitions. [2022-11-21 16:51:34,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7765404602821084 [2022-11-21 16:51:34,375 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4184 transitions. [2022-11-21 16:51:34,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4184 transitions. [2022-11-21 16:51:34,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:34,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4184 transitions. [2022-11-21 16:51:34,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 348.6666666666667) internal successors, (4184), 12 states have internal predecessors, (4184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:34,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:34,394 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:34,395 INFO L175 Difference]: Start difference. First operand has 485 places, 621 transitions, 2963 flow. Second operand 12 states and 4184 transitions. [2022-11-21 16:51:34,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 750 transitions, 4481 flow [2022-11-21 16:51:34,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 750 transitions, 4297 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-21 16:51:34,428 INFO L231 Difference]: Finished difference. Result has 485 places, 625 transitions, 2919 flow [2022-11-21 16:51:34,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2919, PETRI_PLACES=485, PETRI_TRANSITIONS=625} [2022-11-21 16:51:34,430 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 86 predicate places. [2022-11-21 16:51:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 625 transitions, 2919 flow [2022-11-21 16:51:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 342.1111111111111) internal successors, (3079), 9 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:34,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:34,432 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:34,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:34,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:34,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:34,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -792412731, now seen corresponding path program 1 times [2022-11-21 16:51:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989783844] [2022-11-21 16:51:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:34,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:51:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989783844] [2022-11-21 16:51:34,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989783844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:51:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795779170] [2022-11-21 16:51:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:34,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:51:34,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:51:34,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:51:34,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:51:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:35,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:51:35,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:35,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:51:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:35,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795779170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:51:35,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:51:35,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-21 16:51:35,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982529535] [2022-11-21 16:51:35,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:51:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 16:51:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 16:51:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:51:35,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 449 [2022-11-21 16:51:35,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 625 transitions, 2919 flow. Second operand has 25 states, 25 states have (on average 317.56) internal successors, (7939), 25 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:35,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:35,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 449 [2022-11-21 16:51:35,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:51:52,025 INFO L130 PetriNetUnfolder]: 15256/50124 cut-off events. [2022-11-21 16:51:52,025 INFO L131 PetriNetUnfolder]: For 5908/6268 co-relation queries the response was YES. [2022-11-21 16:51:52,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83371 conditions, 50124 events. 15256/50124 cut-off events. For 5908/6268 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 572067 event pairs, 9630 based on Foata normal form. 30/31794 useless extension candidates. Maximal degree in co-relation 82585. Up to 7900 conditions per place. [2022-11-21 16:51:52,749 INFO L137 encePairwiseOnDemand]: 421/449 looper letters, 676 selfloop transitions, 151 changer transitions 0/1107 dead transitions. [2022-11-21 16:51:52,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1107 transitions, 7607 flow [2022-11-21 16:51:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:51:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-21 16:51:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 11242 transitions. [2022-11-21 16:51:52,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7153674832962138 [2022-11-21 16:51:52,771 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 11242 transitions. [2022-11-21 16:51:52,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 11242 transitions. [2022-11-21 16:51:52,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:51:52,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 11242 transitions. [2022-11-21 16:51:52,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 321.2) internal successors, (11242), 35 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:52,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 449.0) internal successors, (16164), 36 states have internal predecessors, (16164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:52,821 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 449.0) internal successors, (16164), 36 states have internal predecessors, (16164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:52,821 INFO L175 Difference]: Start difference. First operand has 485 places, 625 transitions, 2919 flow. Second operand 35 states and 11242 transitions. [2022-11-21 16:51:52,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1107 transitions, 7607 flow [2022-11-21 16:51:52,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1107 transitions, 7576 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:51:52,873 INFO L231 Difference]: Finished difference. Result has 526 places, 721 transitions, 4000 flow [2022-11-21 16:51:52,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4000, PETRI_PLACES=526, PETRI_TRANSITIONS=721} [2022-11-21 16:51:52,875 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 127 predicate places. [2022-11-21 16:51:52,875 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 721 transitions, 4000 flow [2022-11-21 16:51:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 317.56) internal successors, (7939), 25 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:52,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:51:52,877 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:52,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:53,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a896ff1-5733-4e1c-9d48-c97583ab55a5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 16:51:53,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:51:53,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1695186526, now seen corresponding path program 1 times [2022-11-21 16:51:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:51:53,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830117293] [2022-11-21 16:51:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:53,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:51:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:51:53,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:51:53,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830117293] [2022-11-21 16:51:53,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830117293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:53,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:53,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:51:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210092005] [2022-11-21 16:51:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:53,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:51:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:51:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:51:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:51:53,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 449 [2022-11-21 16:51:53,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 721 transitions, 4000 flow. Second operand has 5 states, 5 states have (on average 393.6) internal successors, (1968), 5 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:51:53,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:51:53,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 449 [2022-11-21 16:51:53,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand