./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8 --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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- 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-e04fb08 [2022-11-16 12:27:44,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:44,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:44,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:44,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:44,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:44,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:44,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:44,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:44,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:44,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:44,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:44,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:44,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:44,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:44,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:44,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:44,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:44,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:44,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:44,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:44,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:44,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:44,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:44,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:44,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:44,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:44,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:44,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:44,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:44,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:44,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:44,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:44,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:44,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:44,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:44,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:44,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:44,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:44,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:44,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:44,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:27:45,026 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:45,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:45,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:45,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:45,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:45,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:45,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:45,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:45,030 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:45,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:45,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:45,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:27:45,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:45,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:45,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:45,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:27:45,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:45,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:27:45,032 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:27:45,032 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:45,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:27:45,033 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:45,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:27:45,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:45,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:45,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:45,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:45,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:45,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:45,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:27:45,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:27:45,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:27:45,035 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:27:45,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:27:45,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:27:45,036 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_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2022-11-16 12:27:45,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:45,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:45,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:45,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:45,418 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:45,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-16 12:27:45,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/data/a20bb766b/2cbcd0ac0a134dc78051cced722d9107/FLAG44bde2021 [2022-11-16 12:27:46,308 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:46,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2022-11-16 12:27:46,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/data/a20bb766b/2cbcd0ac0a134dc78051cced722d9107/FLAG44bde2021 [2022-11-16 12:27:46,516 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/data/a20bb766b/2cbcd0ac0a134dc78051cced722d9107 [2022-11-16 12:27:46,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:46,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:46,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:46,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:46,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:46,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:46" (1/1) ... [2022-11-16 12:27:46,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fac8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:46, skipping insertion in model container [2022-11-16 12:27:46,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:46" (1/1) ... [2022-11-16 12:27:46,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:46,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:47,219 WARN L229 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_37d033b5-4ef9-493f-a522-3526dc5ea97d/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-16 12:27:47,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:47,285 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:27:47,318 WARN L229 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_37d033b5-4ef9-493f-a522-3526dc5ea97d/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2022-11-16 12:27:47,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:47,388 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:27:47,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47 WrapperNode [2022-11-16 12:27:47,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:47,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:47,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:27:47,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:27:47,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,475 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-16 12:27:47,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:47,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:27:47,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:27:47,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:27:47,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:27:47,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:27:47,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:27:47,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:27:47,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (1/1) ... [2022-11-16 12:27:47,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:47,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:47,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:27:47,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:27:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:27:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:27:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:27:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:27:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:27:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:27:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:27:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:27:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:27:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:27:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:27:47,622 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:27:47,782 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:27:47,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:27:48,197 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:27:48,208 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:27:48,208 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-16 12:27:48,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:48 BoogieIcfgContainer [2022-11-16 12:27:48,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:27:48,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:27:48,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:27:48,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:27:48,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:46" (1/3) ... [2022-11-16 12:27:48,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ed85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:48, skipping insertion in model container [2022-11-16 12:27:48,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:47" (2/3) ... [2022-11-16 12:27:48,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ed85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:48, skipping insertion in model container [2022-11-16 12:27:48,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:48" (3/3) ... [2022-11-16 12:27:48,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2022-11-16 12:27:48,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:27:48,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:27:48,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 12:27:48,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:27:48,421 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:27:48,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-16 12:27:48,728 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-16 12:27:48,729 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 12:27:48,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1038 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-16 12:27:48,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2022-11-16 12:27:48,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2022-11-16 12:27:48,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:48,787 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;@233524a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:48,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 12:27:48,810 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-16 12:27:48,810 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:48,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:48,811 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] [2022-11-16 12:27:48,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -729273671, now seen corresponding path program 1 times [2022-11-16 12:27:48,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:48,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958734428] [2022-11-16 12:27:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958734428] [2022-11-16 12:27:49,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958734428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:49,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:49,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:49,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520270580] [2022-11-16 12:27:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:49,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:49,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:49,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:49,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 220 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:49,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:49,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:49,554 INFO L130 PetriNetUnfolder]: 4/263 cut-off events. [2022-11-16 12:27:49,555 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 12:27:49,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 263 events. 4/263 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 39/272 useless extension candidates. Maximal degree in co-relation 140. Up to 15 conditions per place. [2022-11-16 12:27:49,560 INFO L137 encePairwiseOnDemand]: 189/223 looper letters, 17 selfloop transitions, 4 changer transitions 1/198 dead transitions. [2022-11-16 12:27:49,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 446 flow [2022-11-16 12:27:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2022-11-16 12:27:49,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8538116591928251 [2022-11-16 12:27:49,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2022-11-16 12:27:49,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2022-11-16 12:27:49,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:49,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2022-11-16 12:27:49,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.4) internal successors, (952), 5 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,625 INFO L175 Difference]: Start difference. First operand has 193 places, 220 transitions, 448 flow. Second operand 5 states and 952 transitions. [2022-11-16 12:27:49,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 446 flow [2022-11-16 12:27:49,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:49,641 INFO L231 Difference]: Finished difference. Result has 198 places, 193 transitions, 420 flow [2022-11-16 12:27:49,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=198, PETRI_TRANSITIONS=193} [2022-11-16 12:27:49,651 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 5 predicate places. [2022-11-16 12:27:49,652 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 193 transitions, 420 flow [2022-11-16 12:27:49,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:49,653 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:27:49,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1620695023, now seen corresponding path program 1 times [2022-11-16 12:27:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:49,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919026656] [2022-11-16 12:27:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:49,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:27:49,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:49,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919026656] [2022-11-16 12:27:49,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919026656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:49,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:49,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:49,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957792028] [2022-11-16 12:27:49,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:49,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:49,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:49,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:49,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 193 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:49,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:49,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:49,969 INFO L130 PetriNetUnfolder]: 4/261 cut-off events. [2022-11-16 12:27:49,970 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-16 12:27:49,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 261 events. 4/261 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 780 event pairs, 0 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 251. Up to 7 conditions per place. [2022-11-16 12:27:49,974 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 9 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-16 12:27:49,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 193 transitions, 452 flow [2022-11-16 12:27:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-11-16 12:27:50,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820627802690583 [2022-11-16 12:27:50,003 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-11-16 12:27:50,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-11-16 12:27:50,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:50,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-11-16 12:27:50,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,014 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,014 INFO L175 Difference]: Start difference. First operand has 198 places, 193 transitions, 420 flow. Second operand 5 states and 915 transitions. [2022-11-16 12:27:50,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 193 transitions, 452 flow [2022-11-16 12:27:50,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 193 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:50,022 INFO L231 Difference]: Finished difference. Result has 200 places, 193 transitions, 438 flow [2022-11-16 12:27:50,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=200, PETRI_TRANSITIONS=193} [2022-11-16 12:27:50,024 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 7 predicate places. [2022-11-16 12:27:50,024 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 193 transitions, 438 flow [2022-11-16 12:27:50,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:50,026 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] [2022-11-16 12:27:50,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:27:50,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1298061306, now seen corresponding path program 1 times [2022-11-16 12:27:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:50,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210444785] [2022-11-16 12:27:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:50,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:50,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210444785] [2022-11-16 12:27:50,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210444785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:50,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430836530] [2022-11-16 12:27:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:50,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:50,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:50,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:50,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:27:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:50,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:50,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430836530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:50,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:27:50,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:27:50,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403273470] [2022-11-16 12:27:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:50,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:50,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:27:50,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:50,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 193 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:50,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:50,692 INFO L130 PetriNetUnfolder]: 4/260 cut-off events. [2022-11-16 12:27:50,692 INFO L131 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2022-11-16 12:27:50,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 260 events. 4/260 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 773 event pairs, 0 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 249. Up to 10 conditions per place. [2022-11-16 12:27:50,699 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 11 selfloop transitions, 5 changer transitions 0/192 dead transitions. [2022-11-16 12:27:50,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 192 transitions, 466 flow [2022-11-16 12:27:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2022-11-16 12:27:50,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217488789237668 [2022-11-16 12:27:50,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2022-11-16 12:27:50,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2022-11-16 12:27:50,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:50,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2022-11-16 12:27:50,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,713 INFO L175 Difference]: Start difference. First operand has 200 places, 193 transitions, 438 flow. Second operand 4 states and 733 transitions. [2022-11-16 12:27:50,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 192 transitions, 466 flow [2022-11-16 12:27:50,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 192 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:50,725 INFO L231 Difference]: Finished difference. Result has 199 places, 192 transitions, 432 flow [2022-11-16 12:27:50,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=199, PETRI_TRANSITIONS=192} [2022-11-16 12:27:50,729 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 6 predicate places. [2022-11-16 12:27:50,729 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 192 transitions, 432 flow [2022-11-16 12:27:50,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:50,731 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] [2022-11-16 12:27:50,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:50,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:50,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:50,945 INFO L85 PathProgramCache]: Analyzing trace with hash 950229597, now seen corresponding path program 1 times [2022-11-16 12:27:50,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:50,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293640479] [2022-11-16 12:27:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:50,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:51,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:51,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293640479] [2022-11-16 12:27:51,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293640479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:51,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555031793] [2022-11-16 12:27:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:51,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:51,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:51,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:27:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:51,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:51,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:51,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555031793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:51,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:51,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:27:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818993510] [2022-11-16 12:27:51,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:27:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:27:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:27:51,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:51,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 192 transitions, 432 flow. Second operand has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:51,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:51,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:51,566 INFO L130 PetriNetUnfolder]: 4/268 cut-off events. [2022-11-16 12:27:51,566 INFO L131 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2022-11-16 12:27:51,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 268 events. 4/268 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 763 event pairs, 0 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 239. Up to 7 conditions per place. [2022-11-16 12:27:51,570 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 18 selfloop transitions, 9 changer transitions 0/203 dead transitions. [2022-11-16 12:27:51,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 524 flow [2022-11-16 12:27:51,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:27:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:27:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1649 transitions. [2022-11-16 12:27:51,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216243148978575 [2022-11-16 12:27:51,576 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1649 transitions. [2022-11-16 12:27:51,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1649 transitions. [2022-11-16 12:27:51,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:51,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1649 transitions. [2022-11-16 12:27:51,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.22222222222223) internal successors, (1649), 9 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,591 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,592 INFO L175 Difference]: Start difference. First operand has 199 places, 192 transitions, 432 flow. Second operand 9 states and 1649 transitions. [2022-11-16 12:27:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 524 flow [2022-11-16 12:27:51,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 203 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:51,598 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 478 flow [2022-11-16 12:27:51,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-16 12:27:51,600 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2022-11-16 12:27:51,601 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 478 flow [2022-11-16 12:27:51,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:51,603 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:51,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:51,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash -283872867, now seen corresponding path program 2 times [2022-11-16 12:27:51,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701484277] [2022-11-16 12:27:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:51,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:27:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:52,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701484277] [2022-11-16 12:27:52,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701484277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:52,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:52,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087528424] [2022-11-16 12:27:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:52,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:52,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:52,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:52,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:52,114 INFO L130 PetriNetUnfolder]: 3/205 cut-off events. [2022-11-16 12:27:52,114 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-16 12:27:52,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 205 events. 3/205 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 389 event pairs, 0 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 188. Up to 7 conditions per place. [2022-11-16 12:27:52,117 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 10 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-16 12:27:52,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 196 transitions, 506 flow [2022-11-16 12:27:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-16 12:27:52,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224215246636771 [2022-11-16 12:27:52,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-16 12:27:52,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-16 12:27:52,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:52,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-16 12:27:52,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,129 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 478 flow. Second operand 5 states and 917 transitions. [2022-11-16 12:27:52,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 196 transitions, 506 flow [2022-11-16 12:27:52,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 490 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:52,137 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 470 flow [2022-11-16 12:27:52,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-16 12:27:52,138 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 14 predicate places. [2022-11-16 12:27:52,138 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 470 flow [2022-11-16 12:27:52,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:52,139 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:27:52,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:27:52,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:52,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash -635128358, now seen corresponding path program 1 times [2022-11-16 12:27:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:52,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633883308] [2022-11-16 12:27:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:52,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:52,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633883308] [2022-11-16 12:27:52,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633883308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:52,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119101861] [2022-11-16 12:27:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:52,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:52,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:52,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:27:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:52,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:27:52,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:52,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:52,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119101861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:52,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:52,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:27:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553586034] [2022-11-16 12:27:52,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:52,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:27:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:27:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:27:52,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:52,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 470 flow. Second operand has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:52,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:52,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:53,305 INFO L130 PetriNetUnfolder]: 3/233 cut-off events. [2022-11-16 12:27:53,308 INFO L131 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2022-11-16 12:27:53,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 233 events. 3/233 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 396 event pairs, 0 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 216. Up to 9 conditions per place. [2022-11-16 12:27:53,311 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 34 selfloop transitions, 21 changer transitions 0/229 dead transitions. [2022-11-16 12:27:53,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 229 transitions, 734 flow [2022-11-16 12:27:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:27:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:27:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3839 transitions. [2022-11-16 12:27:53,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197736493700619 [2022-11-16 12:27:53,326 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3839 transitions. [2022-11-16 12:27:53,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3839 transitions. [2022-11-16 12:27:53,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:53,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3839 transitions. [2022-11-16 12:27:53,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.8095238095238) internal successors, (3839), 21 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,354 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,354 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 470 flow. Second operand 21 states and 3839 transitions. [2022-11-16 12:27:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 229 transitions, 734 flow [2022-11-16 12:27:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 726 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:53,366 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 618 flow [2022-11-16 12:27:53,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=618, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2022-11-16 12:27:53,370 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2022-11-16 12:27:53,371 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 618 flow [2022-11-16 12:27:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:53,373 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2022-11-16 12:27:53,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:53,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:27:53,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:53,581 INFO L85 PathProgramCache]: Analyzing trace with hash -957918118, now seen corresponding path program 2 times [2022-11-16 12:27:53,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:53,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256048007] [2022-11-16 12:27:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256048007] [2022-11-16 12:27:54,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256048007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237215949] [2022-11-16 12:27:54,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:54,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:54,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:54,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:54,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:27:54,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:27:54,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:54,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:27:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:54,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:54,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237215949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:54,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:54,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:27:54,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242551337] [2022-11-16 12:27:54,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:54,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:27:54,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:27:54,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:27:54,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:27:54,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 618 flow. Second operand has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:54,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:54,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:27:54,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:55,393 INFO L130 PetriNetUnfolder]: 3/254 cut-off events. [2022-11-16 12:27:55,393 INFO L131 PetriNetUnfolder]: For 225/226 co-relation queries the response was YES. [2022-11-16 12:27:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 254 events. 3/254 cut-off events. For 225/226 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 396 event pairs, 0 based on Foata normal form. 3/242 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2022-11-16 12:27:55,396 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 46 selfloop transitions, 30 changer transitions 0/250 dead transitions. [2022-11-16 12:27:55,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 250 transitions, 980 flow [2022-11-16 12:27:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:27:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:27:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5479 transitions. [2022-11-16 12:27:55,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81898355754858 [2022-11-16 12:27:55,416 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5479 transitions. [2022-11-16 12:27:55,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5479 transitions. [2022-11-16 12:27:55,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:55,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5479 transitions. [2022-11-16 12:27:55,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 182.63333333333333) internal successors, (5479), 30 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:55,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:55,465 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:55,465 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 618 flow. Second operand 30 states and 5479 transitions. [2022-11-16 12:27:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 250 transitions, 980 flow [2022-11-16 12:27:55,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 250 transitions, 900 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:27:55,484 INFO L231 Difference]: Finished difference. Result has 253 places, 217 transitions, 716 flow [2022-11-16 12:27:55,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=716, PETRI_PLACES=253, PETRI_TRANSITIONS=217} [2022-11-16 12:27:55,485 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 60 predicate places. [2022-11-16 12:27:55,485 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 217 transitions, 716 flow [2022-11-16 12:27:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:55,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:55,488 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-16 12:27:55,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:55,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:55,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1973266736, now seen corresponding path program 3 times [2022-11-16 12:27:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:55,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943338698] [2022-11-16 12:27:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:27:55,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:27:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:27:55,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:27:55,813 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:27:55,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-16 12:27:55,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-16 12:27:55,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-16 12:27:55,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-16 12:27:55,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-16 12:27:55,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-16 12:27:55,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-16 12:27:55,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-16 12:27:55,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-16 12:27:55,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-16 12:27:55,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-16 12:27:55,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-16 12:27:55,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-16 12:27:55,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-16 12:27:55,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-16 12:27:55,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-16 12:27:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-16 12:27:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-16 12:27:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-16 12:27:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:27:55,836 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-16 12:27:55,839 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:27:55,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:27:55,896 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:27:55,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-16 12:27:55,992 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-16 12:27:55,993 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-16 12:27:56,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2069 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-16 12:27:56,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 302 transitions, 622 flow [2022-11-16 12:27:56,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 302 transitions, 622 flow [2022-11-16 12:27:56,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:56,009 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;@233524a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:56,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 12:27:56,026 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-16 12:27:56,027 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:56,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:56,027 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] [2022-11-16 12:27:56,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:56,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1575634649, now seen corresponding path program 1 times [2022-11-16 12:27:56,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:56,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134747329] [2022-11-16 12:27:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134747329] [2022-11-16 12:27:56,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134747329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:56,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:56,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811018429] [2022-11-16 12:27:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:56,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:56,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:56,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 302 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:56,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:56,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:56,229 INFO L130 PetriNetUnfolder]: 9/433 cut-off events. [2022-11-16 12:27:56,229 INFO L131 PetriNetUnfolder]: For 19/23 co-relation queries the response was YES. [2022-11-16 12:27:56,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 433 events. 9/433 cut-off events. For 19/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1707 event pairs, 0 based on Foata normal form. 90/470 useless extension candidates. Maximal degree in co-relation 289. Up to 19 conditions per place. [2022-11-16 12:27:56,237 INFO L137 encePairwiseOnDemand]: 256/302 looper letters, 19 selfloop transitions, 4 changer transitions 1/267 dead transitions. [2022-11-16 12:27:56,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 598 flow [2022-11-16 12:27:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1286 transitions. [2022-11-16 12:27:56,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516556291390729 [2022-11-16 12:27:56,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1286 transitions. [2022-11-16 12:27:56,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1286 transitions. [2022-11-16 12:27:56,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:56,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1286 transitions. [2022-11-16 12:27:56,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,252 INFO L175 Difference]: Start difference. First operand has 262 places, 302 transitions, 622 flow. Second operand 5 states and 1286 transitions. [2022-11-16 12:27:56,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 598 flow [2022-11-16 12:27:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:56,258 INFO L231 Difference]: Finished difference. Result has 266 places, 262 transitions, 568 flow [2022-11-16 12:27:56,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=266, PETRI_TRANSITIONS=262} [2022-11-16 12:27:56,262 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 4 predicate places. [2022-11-16 12:27:56,262 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 262 transitions, 568 flow [2022-11-16 12:27:56,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:56,263 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:27:56,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1338975825, now seen corresponding path program 1 times [2022-11-16 12:27:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:56,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046419406] [2022-11-16 12:27:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:27:56,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:56,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046419406] [2022-11-16 12:27:56,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046419406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:56,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:56,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853276790] [2022-11-16 12:27:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:56,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:56,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 262 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:56,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:56,465 INFO L130 PetriNetUnfolder]: 9/431 cut-off events. [2022-11-16 12:27:56,466 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-16 12:27:56,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 431 events. 9/431 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1703 event pairs, 0 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 432. Up to 11 conditions per place. [2022-11-16 12:27:56,474 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/262 dead transitions. [2022-11-16 12:27:56,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 604 flow [2022-11-16 12:27:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-16 12:27:56,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-16 12:27:56,479 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-16 12:27:56,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-16 12:27:56,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:56,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-16 12:27:56,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,489 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,489 INFO L175 Difference]: Start difference. First operand has 266 places, 262 transitions, 568 flow. Second operand 5 states and 1237 transitions. [2022-11-16 12:27:56,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 604 flow [2022-11-16 12:27:56,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:56,499 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 586 flow [2022-11-16 12:27:56,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-16 12:27:56,501 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 6 predicate places. [2022-11-16 12:27:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 586 flow [2022-11-16 12:27:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:56,502 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] [2022-11-16 12:27:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:27:56,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1441423220, now seen corresponding path program 1 times [2022-11-16 12:27:56,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75176209] [2022-11-16 12:27:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:56,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75176209] [2022-11-16 12:27:56,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75176209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:56,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534475805] [2022-11-16 12:27:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:56,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:56,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:27:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:56,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:56,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:56,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:56,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534475805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:56,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:27:56,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:27:56,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192633616] [2022-11-16 12:27:56,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:56,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:27:56,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:56,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:56,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:56,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:56,937 INFO L130 PetriNetUnfolder]: 9/430 cut-off events. [2022-11-16 12:27:56,938 INFO L131 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2022-11-16 12:27:56,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 430 events. 9/430 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1704 event pairs, 0 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 430. Up to 14 conditions per place. [2022-11-16 12:27:56,946 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/261 dead transitions. [2022-11-16 12:27:56,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 261 transitions, 618 flow [2022-11-16 12:27:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-16 12:27:56,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-16 12:27:56,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-16 12:27:56,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-16 12:27:56,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:56,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-16 12:27:56,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,958 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 586 flow. Second operand 4 states and 991 transitions. [2022-11-16 12:27:56,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 261 transitions, 618 flow [2022-11-16 12:27:56,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:56,964 INFO L231 Difference]: Finished difference. Result has 267 places, 261 transitions, 580 flow [2022-11-16 12:27:56,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=267, PETRI_TRANSITIONS=261} [2022-11-16 12:27:56,966 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 5 predicate places. [2022-11-16 12:27:56,966 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 261 transitions, 580 flow [2022-11-16 12:27:56,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:56,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:56,967 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] [2022-11-16 12:27:56,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:27:57,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:57,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash 460715416, now seen corresponding path program 1 times [2022-11-16 12:27:57,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:57,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836205107] [2022-11-16 12:27:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:57,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:57,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:57,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836205107] [2022-11-16 12:27:57,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836205107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:57,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270036631] [2022-11-16 12:27:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:57,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:57,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:57,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:27:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:57,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:57,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:57,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:57,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270036631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:57,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:57,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:27:57,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726439572] [2022-11-16 12:27:57,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:57,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:27:57,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:57,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:27:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:27:57,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:57,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 261 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:57,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:57,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:57,676 INFO L130 PetriNetUnfolder]: 9/438 cut-off events. [2022-11-16 12:27:57,676 INFO L131 PetriNetUnfolder]: For 35/39 co-relation queries the response was YES. [2022-11-16 12:27:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 438 events. 9/438 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1699 event pairs, 0 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 420. Up to 11 conditions per place. [2022-11-16 12:27:57,684 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 20 selfloop transitions, 9 changer transitions 0/272 dead transitions. [2022-11-16 12:27:57,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 272 transitions, 676 flow [2022-11-16 12:27:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:27:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:27:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2227 transitions. [2022-11-16 12:27:57,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193524650478293 [2022-11-16 12:27:57,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2227 transitions. [2022-11-16 12:27:57,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2227 transitions. [2022-11-16 12:27:57,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:57,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2227 transitions. [2022-11-16 12:27:57,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.44444444444446) internal successors, (2227), 9 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,710 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,710 INFO L175 Difference]: Start difference. First operand has 267 places, 261 transitions, 580 flow. Second operand 9 states and 2227 transitions. [2022-11-16 12:27:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 272 transitions, 676 flow [2022-11-16 12:27:57,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 272 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:57,717 INFO L231 Difference]: Finished difference. Result has 276 places, 265 transitions, 626 flow [2022-11-16 12:27:57,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=276, PETRI_TRANSITIONS=265} [2022-11-16 12:27:57,719 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 14 predicate places. [2022-11-16 12:27:57,719 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 265 transitions, 626 flow [2022-11-16 12:27:57,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:57,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:57,721 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:57,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:57,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:57,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:57,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash -604189544, now seen corresponding path program 2 times [2022-11-16 12:27:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:57,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326924884] [2022-11-16 12:27:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:27:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326924884] [2022-11-16 12:27:58,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326924884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:58,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:58,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:58,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180864764] [2022-11-16 12:27:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:58,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:58,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:58,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 265 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:58,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:58,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:58,151 INFO L130 PetriNetUnfolder]: 7/384 cut-off events. [2022-11-16 12:27:58,152 INFO L131 PetriNetUnfolder]: For 53/95 co-relation queries the response was YES. [2022-11-16 12:27:58,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 384 events. 7/384 cut-off events. For 53/95 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1323 event pairs, 0 based on Foata normal form. 3/347 useless extension candidates. Maximal degree in co-relation 388. Up to 21 conditions per place. [2022-11-16 12:27:58,160 INFO L137 encePairwiseOnDemand]: 295/302 looper letters, 19 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-16 12:27:58,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 272 transitions, 686 flow [2022-11-16 12:27:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2022-11-16 12:27:58,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8251655629139073 [2022-11-16 12:27:58,167 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2022-11-16 12:27:58,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2022-11-16 12:27:58,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:58,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2022-11-16 12:27:58,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,176 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,176 INFO L175 Difference]: Start difference. First operand has 276 places, 265 transitions, 626 flow. Second operand 5 states and 1246 transitions. [2022-11-16 12:27:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 272 transitions, 686 flow [2022-11-16 12:27:58,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 272 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:58,183 INFO L231 Difference]: Finished difference. Result has 279 places, 268 transitions, 642 flow [2022-11-16 12:27:58,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=279, PETRI_TRANSITIONS=268} [2022-11-16 12:27:58,185 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 17 predicate places. [2022-11-16 12:27:58,185 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 268 transitions, 642 flow [2022-11-16 12:27:58,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:58,186 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:58,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:27:58,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1003419068, now seen corresponding path program 1 times [2022-11-16 12:27:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:58,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946746396] [2022-11-16 12:27:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:27:58,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:58,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946746396] [2022-11-16 12:27:58,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946746396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:58,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:58,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:58,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860279560] [2022-11-16 12:27:58,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:58,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:58,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:58,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 268 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:58,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:58,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:58,441 INFO L130 PetriNetUnfolder]: 7/383 cut-off events. [2022-11-16 12:27:58,441 INFO L131 PetriNetUnfolder]: For 48/87 co-relation queries the response was YES. [2022-11-16 12:27:58,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 383 events. 7/383 cut-off events. For 48/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1320 event pairs, 0 based on Foata normal form. 7/354 useless extension candidates. Maximal degree in co-relation 395. Up to 10 conditions per place. [2022-11-16 12:27:58,448 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/268 dead transitions. [2022-11-16 12:27:58,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 268 transitions, 678 flow [2022-11-16 12:27:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-16 12:27:58,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-16 12:27:58,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-16 12:27:58,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-16 12:27:58,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:58,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-16 12:27:58,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,461 INFO L175 Difference]: Start difference. First operand has 279 places, 268 transitions, 642 flow. Second operand 5 states and 1237 transitions. [2022-11-16 12:27:58,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 268 transitions, 678 flow [2022-11-16 12:27:58,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:58,468 INFO L231 Difference]: Finished difference. Result has 282 places, 268 transitions, 660 flow [2022-11-16 12:27:58,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=660, PETRI_PLACES=282, PETRI_TRANSITIONS=268} [2022-11-16 12:27:58,470 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 20 predicate places. [2022-11-16 12:27:58,470 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 268 transitions, 660 flow [2022-11-16 12:27:58,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:58,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:58,471 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:58,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:27:58,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:58,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1041219272, now seen corresponding path program 1 times [2022-11-16 12:27:58,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:58,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23794300] [2022-11-16 12:27:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:27:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23794300] [2022-11-16 12:27:58,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23794300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:58,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897853187] [2022-11-16 12:27:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:58,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:58,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:58,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:58,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:27:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:58,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:27:58,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:27:58,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:27:59,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897853187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:59,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:59,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:27:59,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276417582] [2022-11-16 12:27:59,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:59,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:27:59,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:27:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:27:59,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:27:59,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 268 transitions, 660 flow. Second operand has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:59,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:59,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:27:59,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:59,425 INFO L130 PetriNetUnfolder]: 7/411 cut-off events. [2022-11-16 12:27:59,425 INFO L131 PetriNetUnfolder]: For 81/85 co-relation queries the response was YES. [2022-11-16 12:27:59,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 411 events. 7/411 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1315 event pairs, 0 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 390. Up to 11 conditions per place. [2022-11-16 12:27:59,432 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 36 selfloop transitions, 21 changer transitions 0/303 dead transitions. [2022-11-16 12:27:59,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 303 transitions, 928 flow [2022-11-16 12:27:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:27:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:27:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5185 transitions. [2022-11-16 12:27:59,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8175654367707348 [2022-11-16 12:27:59,445 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5185 transitions. [2022-11-16 12:27:59,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5185 transitions. [2022-11-16 12:27:59,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:59,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5185 transitions. [2022-11-16 12:27:59,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 246.9047619047619) internal successors, (5185), 21 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:59,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:59,485 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:59,485 INFO L175 Difference]: Start difference. First operand has 282 places, 268 transitions, 660 flow. Second operand 21 states and 5185 transitions. [2022-11-16 12:27:59,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 303 transitions, 928 flow [2022-11-16 12:27:59,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 303 transitions, 916 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:59,495 INFO L231 Difference]: Finished difference. Result has 304 places, 281 transitions, 804 flow [2022-11-16 12:27:59,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=804, PETRI_PLACES=304, PETRI_TRANSITIONS=281} [2022-11-16 12:27:59,496 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 42 predicate places. [2022-11-16 12:27:59,496 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 281 transitions, 804 flow [2022-11-16 12:27:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:59,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:59,498 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:59,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:59,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:27:59,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2024936248, now seen corresponding path program 2 times [2022-11-16 12:27:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:59,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708599941] [2022-11-16 12:27:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:59,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:00,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708599941] [2022-11-16 12:28:00,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708599941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:00,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853515454] [2022-11-16 12:28:00,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:00,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:00,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:28:00,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:00,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:00,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:28:00,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:00,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:00,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853515454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:00,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:00,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:28:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034451844] [2022-11-16 12:28:00,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:00,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:28:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:28:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:00,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:28:00,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 281 transitions, 804 flow. Second operand has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:00,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:00,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:28:00,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:01,376 INFO L130 PetriNetUnfolder]: 7/432 cut-off events. [2022-11-16 12:28:01,377 INFO L131 PetriNetUnfolder]: For 243/247 co-relation queries the response was YES. [2022-11-16 12:28:01,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 432 events. 7/432 cut-off events. For 243/247 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1317 event pairs, 0 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 513. Up to 12 conditions per place. [2022-11-16 12:28:01,386 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 48 selfloop transitions, 30 changer transitions 0/324 dead transitions. [2022-11-16 12:28:01,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 324 transitions, 1170 flow [2022-11-16 12:28:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:28:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:28:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7401 transitions. [2022-11-16 12:28:01,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168874172185431 [2022-11-16 12:28:01,404 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7401 transitions. [2022-11-16 12:28:01,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7401 transitions. [2022-11-16 12:28:01,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:01,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7401 transitions. [2022-11-16 12:28:01,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 246.7) internal successors, (7401), 30 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:01,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:01,444 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:01,445 INFO L175 Difference]: Start difference. First operand has 304 places, 281 transitions, 804 flow. Second operand 30 states and 7401 transitions. [2022-11-16 12:28:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 324 transitions, 1170 flow [2022-11-16 12:28:01,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 324 transitions, 1090 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:01,455 INFO L231 Difference]: Finished difference. Result has 329 places, 291 transitions, 902 flow [2022-11-16 12:28:01,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=902, PETRI_PLACES=329, PETRI_TRANSITIONS=291} [2022-11-16 12:28:01,457 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 67 predicate places. [2022-11-16 12:28:01,457 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 291 transitions, 902 flow [2022-11-16 12:28:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:01,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:01,460 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:01,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:28:01,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:28:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1096394928, now seen corresponding path program 3 times [2022-11-16 12:28:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:01,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237806114] [2022-11-16 12:28:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:01,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237806114] [2022-11-16 12:28:01,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237806114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605434993] [2022-11-16 12:28:01,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:28:01,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:01,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:01,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:28:01,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:28:01,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:02,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:02,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:02,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:02,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605434993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:02,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:02,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338490287] [2022-11-16 12:28:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:02,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:02,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:28:02,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 291 transitions, 902 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:02,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:28:02,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:02,221 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-16 12:28:02,222 INFO L131 PetriNetUnfolder]: For 213/249 co-relation queries the response was YES. [2022-11-16 12:28:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 431 events. 7/431 cut-off events. For 213/249 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1323 event pairs, 0 based on Foata normal form. 3/398 useless extension candidates. Maximal degree in co-relation 454. Up to 17 conditions per place. [2022-11-16 12:28:02,231 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-16 12:28:02,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 290 transitions, 934 flow [2022-11-16 12:28:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-16 12:28:02,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-16 12:28:02,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-16 12:28:02,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-16 12:28:02,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:02,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-16 12:28:02,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,242 INFO L175 Difference]: Start difference. First operand has 329 places, 291 transitions, 902 flow. Second operand 4 states and 991 transitions. [2022-11-16 12:28:02,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 290 transitions, 934 flow [2022-11-16 12:28:02,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 290 transitions, 888 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:28:02,252 INFO L231 Difference]: Finished difference. Result has 313 places, 290 transitions, 862 flow [2022-11-16 12:28:02,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=313, PETRI_TRANSITIONS=290} [2022-11-16 12:28:02,254 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 51 predicate places. [2022-11-16 12:28:02,254 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 290 transitions, 862 flow [2022-11-16 12:28:02,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:02,255 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:02,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:02,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:28:02,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:28:02,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1921684219, now seen corresponding path program 1 times [2022-11-16 12:28:02,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:02,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034389647] [2022-11-16 12:28:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:02,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034389647] [2022-11-16 12:28:02,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034389647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:02,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412266704] [2022-11-16 12:28:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:02,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:02,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:02,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:02,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:28:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:02,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:02,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:02,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:02,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412266704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:02,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:02,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:28:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655082065] [2022-11-16 12:28:02,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:02,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:02,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:28:02,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 290 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:02,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:02,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:28:02,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:03,002 INFO L130 PetriNetUnfolder]: 3/263 cut-off events. [2022-11-16 12:28:03,003 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-16 12:28:03,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 263 events. 3/263 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 351. Up to 12 conditions per place. [2022-11-16 12:28:03,006 INFO L137 encePairwiseOnDemand]: 297/302 looper letters, 13 selfloop transitions, 7 changer transitions 0/224 dead transitions. [2022-11-16 12:28:03,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 224 transitions, 764 flow [2022-11-16 12:28:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2218 transitions. [2022-11-16 12:28:03,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8160412067696836 [2022-11-16 12:28:03,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2218 transitions. [2022-11-16 12:28:03,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2218 transitions. [2022-11-16 12:28:03,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:03,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2218 transitions. [2022-11-16 12:28:03,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.44444444444446) internal successors, (2218), 9 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:03,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:03,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:03,023 INFO L175 Difference]: Start difference. First operand has 313 places, 290 transitions, 862 flow. Second operand 9 states and 2218 transitions. [2022-11-16 12:28:03,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 224 transitions, 764 flow [2022-11-16 12:28:03,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 224 transitions, 752 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:03,031 INFO L231 Difference]: Finished difference. Result has 250 places, 219 transitions, 714 flow [2022-11-16 12:28:03,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=714, PETRI_PLACES=250, PETRI_TRANSITIONS=219} [2022-11-16 12:28:03,033 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, -12 predicate places. [2022-11-16 12:28:03,033 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 219 transitions, 714 flow [2022-11-16 12:28:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:03,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:03,035 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:03,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:03,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:28:03,242 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:28:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1265664375, now seen corresponding path program 1 times [2022-11-16 12:28:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:03,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322808062] [2022-11-16 12:28:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322808062] [2022-11-16 12:28:04,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322808062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:04,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:04,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:28:04,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61870264] [2022-11-16 12:28:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:04,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 302 [2022-11-16 12:28:04,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 219 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 209.4) internal successors, (2094), 10 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:04,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:04,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 302 [2022-11-16 12:28:04,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:05,152 INFO L130 PetriNetUnfolder]: 564/2460 cut-off events. [2022-11-16 12:28:05,152 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2022-11-16 12:28:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3823 conditions, 2460 events. 564/2460 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 20624 event pairs, 137 based on Foata normal form. 0/2255 useless extension candidates. Maximal degree in co-relation 3556. Up to 394 conditions per place. [2022-11-16 12:28:05,190 INFO L137 encePairwiseOnDemand]: 288/302 looper letters, 102 selfloop transitions, 23 changer transitions 0/303 dead transitions. [2022-11-16 12:28:05,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 303 transitions, 1172 flow [2022-11-16 12:28:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:28:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3029 transitions. [2022-11-16 12:28:05,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.716414380321665 [2022-11-16 12:28:05,196 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3029 transitions. [2022-11-16 12:28:05,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3029 transitions. [2022-11-16 12:28:05,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:05,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3029 transitions. [2022-11-16 12:28:05,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 216.35714285714286) internal successors, (3029), 14 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 302.0) internal successors, (4530), 15 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,212 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 302.0) internal successors, (4530), 15 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,213 INFO L175 Difference]: Start difference. First operand has 250 places, 219 transitions, 714 flow. Second operand 14 states and 3029 transitions. [2022-11-16 12:28:05,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 303 transitions, 1172 flow [2022-11-16 12:28:05,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 303 transitions, 1149 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:05,223 INFO L231 Difference]: Finished difference. Result has 262 places, 242 transitions, 852 flow [2022-11-16 12:28:05,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=852, PETRI_PLACES=262, PETRI_TRANSITIONS=242} [2022-11-16 12:28:05,225 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 0 predicate places. [2022-11-16 12:28:05,225 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 242 transitions, 852 flow [2022-11-16 12:28:05,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.4) internal successors, (2094), 10 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:05,227 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:05,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:28:05,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:28:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2002685866, now seen corresponding path program 1 times [2022-11-16 12:28:05,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:05,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270736183] [2022-11-16 12:28:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:28:05,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:28:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:28:05,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:28:05,336 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:28:05,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-16 12:28:05,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-16 12:28:05,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-16 12:28:05,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-16 12:28:05,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-16 12:28:05,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-16 12:28:05,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-16 12:28:05,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-16 12:28:05,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-16 12:28:05,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-16 12:28:05,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-16 12:28:05,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-16 12:28:05,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-16 12:28:05,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-16 12:28:05,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-16 12:28:05,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-16 12:28:05,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-16 12:28:05,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-16 12:28:05,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-16 12:28:05,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-16 12:28:05,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-16 12:28:05,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-16 12:28:05,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-16 12:28:05,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:28:05,344 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:05,345 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:28:05,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:28:05,406 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:28:05,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-16 12:28:05,633 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-16 12:28:05,633 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-16 12:28:05,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3393 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-16 12:28:05,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2022-11-16 12:28:05,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 381 transitions, 792 flow [2022-11-16 12:28:05,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:05,677 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;@233524a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:05,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-16 12:28:05,681 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-16 12:28:05,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:28:05,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:05,682 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] [2022-11-16 12:28:05,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:05,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash 343171972, now seen corresponding path program 1 times [2022-11-16 12:28:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:05,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620016379] [2022-11-16 12:28:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:05,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620016379] [2022-11-16 12:28:05,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620016379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:05,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:05,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:05,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865269202] [2022-11-16 12:28:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:05,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:05,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:05,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 381 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:05,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:05,961 INFO L130 PetriNetUnfolder]: 16/639 cut-off events. [2022-11-16 12:28:05,961 INFO L131 PetriNetUnfolder]: For 55/69 co-relation queries the response was YES. [2022-11-16 12:28:05,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 639 events. 16/639 cut-off events. For 55/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2954 event pairs, 1 based on Foata normal form. 208/766 useless extension candidates. Maximal degree in co-relation 466. Up to 28 conditions per place. [2022-11-16 12:28:05,976 INFO L137 encePairwiseOnDemand]: 323/381 looper letters, 21 selfloop transitions, 4 changer transitions 1/333 dead transitions. [2022-11-16 12:28:05,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 333 transitions, 746 flow [2022-11-16 12:28:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1620 transitions. [2022-11-16 12:28:05,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-16 12:28:05,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1620 transitions. [2022-11-16 12:28:05,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1620 transitions. [2022-11-16 12:28:05,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:05,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1620 transitions. [2022-11-16 12:28:05,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,988 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,988 INFO L175 Difference]: Start difference. First operand has 329 places, 381 transitions, 792 flow. Second operand 5 states and 1620 transitions. [2022-11-16 12:28:05,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 333 transitions, 746 flow [2022-11-16 12:28:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 746 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:28:05,995 INFO L231 Difference]: Finished difference. Result has 332 places, 328 transitions, 712 flow [2022-11-16 12:28:05,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=332, PETRI_TRANSITIONS=328} [2022-11-16 12:28:05,996 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 3 predicate places. [2022-11-16 12:28:05,997 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 328 transitions, 712 flow [2022-11-16 12:28:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:05,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:05,998 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:05,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:28:05,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:05,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 388285263, now seen corresponding path program 1 times [2022-11-16 12:28:05,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:05,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803077708] [2022-11-16 12:28:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:05,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:06,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803077708] [2022-11-16 12:28:06,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803077708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:06,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:06,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027134050] [2022-11-16 12:28:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:06,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:06,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:06,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 328 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:06,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:06,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:06,268 INFO L130 PetriNetUnfolder]: 16/637 cut-off events. [2022-11-16 12:28:06,269 INFO L131 PetriNetUnfolder]: For 58/72 co-relation queries the response was YES. [2022-11-16 12:28:06,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 637 events. 16/637 cut-off events. For 58/72 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2931 event pairs, 1 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 660. Up to 20 conditions per place. [2022-11-16 12:28:06,282 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/328 dead transitions. [2022-11-16 12:28:06,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 328 transitions, 752 flow [2022-11-16 12:28:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-16 12:28:06,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-16 12:28:06,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-16 12:28:06,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-16 12:28:06,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:06,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-16 12:28:06,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,298 INFO L175 Difference]: Start difference. First operand has 332 places, 328 transitions, 712 flow. Second operand 5 states and 1559 transitions. [2022-11-16 12:28:06,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 328 transitions, 752 flow [2022-11-16 12:28:06,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:06,305 INFO L231 Difference]: Finished difference. Result has 334 places, 328 transitions, 730 flow [2022-11-16 12:28:06,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=730, PETRI_PLACES=334, PETRI_TRANSITIONS=328} [2022-11-16 12:28:06,306 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2022-11-16 12:28:06,306 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 328 transitions, 730 flow [2022-11-16 12:28:06,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:06,307 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] [2022-11-16 12:28:06,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:28:06,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:06,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash -848057519, now seen corresponding path program 1 times [2022-11-16 12:28:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:06,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904193384] [2022-11-16 12:28:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:06,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:06,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:06,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904193384] [2022-11-16 12:28:06,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904193384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:06,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595365233] [2022-11-16 12:28:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:06,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:06,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:06,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:06,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:28:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:06,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:06,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:06,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:06,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595365233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:06,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:06,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:06,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666918781] [2022-11-16 12:28:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:06,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:06,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 328 transitions, 730 flow. Second operand has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:06,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:06,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:06,768 INFO L130 PetriNetUnfolder]: 16/636 cut-off events. [2022-11-16 12:28:06,769 INFO L131 PetriNetUnfolder]: For 65/79 co-relation queries the response was YES. [2022-11-16 12:28:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 636 events. 16/636 cut-off events. For 65/79 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2919 event pairs, 1 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 658. Up to 23 conditions per place. [2022-11-16 12:28:06,787 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2022-11-16 12:28:06,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 327 transitions, 766 flow [2022-11-16 12:28:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-16 12:28:06,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-16 12:28:06,790 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-16 12:28:06,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-16 12:28:06,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:06,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-16 12:28:06,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,797 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,797 INFO L175 Difference]: Start difference. First operand has 334 places, 328 transitions, 730 flow. Second operand 4 states and 1249 transitions. [2022-11-16 12:28:06,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 327 transitions, 766 flow [2022-11-16 12:28:06,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 327 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:06,806 INFO L231 Difference]: Finished difference. Result has 333 places, 327 transitions, 724 flow [2022-11-16 12:28:06,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=333, PETRI_TRANSITIONS=327} [2022-11-16 12:28:06,807 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 4 predicate places. [2022-11-16 12:28:06,807 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 327 transitions, 724 flow [2022-11-16 12:28:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:06,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:06,809 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] [2022-11-16 12:28:06,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:07,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:28:07,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:07,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1725622718, now seen corresponding path program 1 times [2022-11-16 12:28:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:07,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672365564] [2022-11-16 12:28:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:07,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672365564] [2022-11-16 12:28:07,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672365564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665362886] [2022-11-16 12:28:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:07,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:07,121 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:07,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:28:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:07,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:07,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:07,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:07,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665362886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:07,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:07,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:28:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728046454] [2022-11-16 12:28:07,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:07,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:07,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:07,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 327 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:07,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:07,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:07,597 INFO L130 PetriNetUnfolder]: 16/644 cut-off events. [2022-11-16 12:28:07,597 INFO L131 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2022-11-16 12:28:07,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 644 events. 16/644 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2910 event pairs, 1 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 648. Up to 20 conditions per place. [2022-11-16 12:28:07,612 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/338 dead transitions. [2022-11-16 12:28:07,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 338 transitions, 824 flow [2022-11-16 12:28:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-16 12:28:07,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-16 12:28:07,617 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-16 12:28:07,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-16 12:28:07,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:07,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-16 12:28:07,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:07,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:07,630 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:07,630 INFO L175 Difference]: Start difference. First operand has 333 places, 327 transitions, 724 flow. Second operand 9 states and 2805 transitions. [2022-11-16 12:28:07,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 338 transitions, 824 flow [2022-11-16 12:28:07,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 810 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:07,637 INFO L231 Difference]: Finished difference. Result has 342 places, 331 transitions, 770 flow [2022-11-16 12:28:07,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=342, PETRI_TRANSITIONS=331} [2022-11-16 12:28:07,639 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 13 predicate places. [2022-11-16 12:28:07,639 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 331 transitions, 770 flow [2022-11-16 12:28:07,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:07,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:07,641 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:07,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:07,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:07,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash -671355934, now seen corresponding path program 2 times [2022-11-16 12:28:07,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:07,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928597273] [2022-11-16 12:28:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:07,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:07,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928597273] [2022-11-16 12:28:07,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928597273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:07,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:07,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238701618] [2022-11-16 12:28:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:07,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:07,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:07,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:07,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 331 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:07,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:07,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:07,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:08,186 INFO L130 PetriNetUnfolder]: 14/590 cut-off events. [2022-11-16 12:28:08,186 INFO L131 PetriNetUnfolder]: For 133/308 co-relation queries the response was YES. [2022-11-16 12:28:08,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 590 events. 14/590 cut-off events. For 133/308 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2557 event pairs, 1 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 626. Up to 40 conditions per place. [2022-11-16 12:28:08,204 INFO L137 encePairwiseOnDemand]: 374/381 looper letters, 21 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2022-11-16 12:28:08,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 834 flow [2022-11-16 12:28:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-11-16 12:28:08,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230971128608924 [2022-11-16 12:28:08,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-11-16 12:28:08,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-11-16 12:28:08,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:08,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-11-16 12:28:08,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,216 INFO L175 Difference]: Start difference. First operand has 342 places, 331 transitions, 770 flow. Second operand 5 states and 1568 transitions. [2022-11-16 12:28:08,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 834 flow [2022-11-16 12:28:08,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 338 transitions, 818 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:08,225 INFO L231 Difference]: Finished difference. Result has 345 places, 334 transitions, 786 flow [2022-11-16 12:28:08,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=345, PETRI_TRANSITIONS=334} [2022-11-16 12:28:08,226 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 16 predicate places. [2022-11-16 12:28:08,227 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 334 transitions, 786 flow [2022-11-16 12:28:08,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:08,228 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:28:08,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash -921263589, now seen corresponding path program 1 times [2022-11-16 12:28:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:08,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298049810] [2022-11-16 12:28:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:28:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:08,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298049810] [2022-11-16 12:28:08,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298049810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:08,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:08,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:28:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224531553] [2022-11-16 12:28:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:08,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:08,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:08,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 334 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:08,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:08,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:08,545 INFO L130 PetriNetUnfolder]: 14/588 cut-off events. [2022-11-16 12:28:08,545 INFO L131 PetriNetUnfolder]: For 125/286 co-relation queries the response was YES. [2022-11-16 12:28:08,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 588 events. 14/588 cut-off events. For 125/286 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2537 event pairs, 1 based on Foata normal form. 11/538 useless extension candidates. Maximal degree in co-relation 636. Up to 20 conditions per place. [2022-11-16 12:28:08,562 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/334 dead transitions. [2022-11-16 12:28:08,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 334 transitions, 826 flow [2022-11-16 12:28:08,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:28:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-16 12:28:08,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-16 12:28:08,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-16 12:28:08,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-16 12:28:08,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:08,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-16 12:28:08,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,572 INFO L175 Difference]: Start difference. First operand has 345 places, 334 transitions, 786 flow. Second operand 5 states and 1559 transitions. [2022-11-16 12:28:08,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 334 transitions, 826 flow [2022-11-16 12:28:08,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 334 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:28:08,579 INFO L231 Difference]: Finished difference. Result has 348 places, 334 transitions, 804 flow [2022-11-16 12:28:08,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=348, PETRI_TRANSITIONS=334} [2022-11-16 12:28:08,581 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 19 predicate places. [2022-11-16 12:28:08,581 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 334 transitions, 804 flow [2022-11-16 12:28:08,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:08,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:08,582 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:28:08,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:08,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1505600958, now seen corresponding path program 1 times [2022-11-16 12:28:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:08,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105372446] [2022-11-16 12:28:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:08,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:08,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105372446] [2022-11-16 12:28:08,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105372446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:08,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290925353] [2022-11-16 12:28:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:08,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:08,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:08,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:28:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:08,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:08,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:08,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:09,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290925353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:09,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:09,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:28:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61488557] [2022-11-16 12:28:09,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:09,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:28:09,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:28:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:28:09,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:09,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 334 transitions, 804 flow. Second operand has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:09,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:09,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:09,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:09,536 INFO L130 PetriNetUnfolder]: 14/616 cut-off events. [2022-11-16 12:28:09,536 INFO L131 PetriNetUnfolder]: For 120/134 co-relation queries the response was YES. [2022-11-16 12:28:09,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 616 events. 14/616 cut-off events. For 120/134 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2502 event pairs, 1 based on Foata normal form. 4/559 useless extension candidates. Maximal degree in co-relation 626. Up to 20 conditions per place. [2022-11-16 12:28:09,550 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 38 selfloop transitions, 21 changer transitions 0/369 dead transitions. [2022-11-16 12:28:09,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 369 transitions, 1076 flow [2022-11-16 12:28:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:28:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:28:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6531 transitions. [2022-11-16 12:28:09,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2022-11-16 12:28:09,563 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6531 transitions. [2022-11-16 12:28:09,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6531 transitions. [2022-11-16 12:28:09,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:09,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6531 transitions. [2022-11-16 12:28:09,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:09,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:09,595 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:09,595 INFO L175 Difference]: Start difference. First operand has 348 places, 334 transitions, 804 flow. Second operand 21 states and 6531 transitions. [2022-11-16 12:28:09,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 369 transitions, 1076 flow [2022-11-16 12:28:09,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 369 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:09,608 INFO L231 Difference]: Finished difference. Result has 370 places, 347 transitions, 948 flow [2022-11-16 12:28:09,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=948, PETRI_PLACES=370, PETRI_TRANSITIONS=347} [2022-11-16 12:28:09,609 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 41 predicate places. [2022-11-16 12:28:09,609 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 347 transitions, 948 flow [2022-11-16 12:28:09,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:09,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:09,611 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:09,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:09,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1320400258, now seen corresponding path program 2 times [2022-11-16 12:28:09,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:09,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894029068] [2022-11-16 12:28:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:09,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:10,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:10,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894029068] [2022-11-16 12:28:10,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894029068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:10,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263114805] [2022-11-16 12:28:10,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:10,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:10,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:10,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:10,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:28:10,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:10,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:10,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:28:10,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:10,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:10,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263114805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:10,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:10,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:28:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064478534] [2022-11-16 12:28:10,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:10,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:28:10,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:28:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:10,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:10,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 347 transitions, 948 flow. Second operand has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:10,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:10,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:10,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:11,385 INFO L130 PetriNetUnfolder]: 14/637 cut-off events. [2022-11-16 12:28:11,385 INFO L131 PetriNetUnfolder]: For 280/294 co-relation queries the response was YES. [2022-11-16 12:28:11,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 637 events. 14/637 cut-off events. For 280/294 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2502 event pairs, 1 based on Foata normal form. 3/579 useless extension candidates. Maximal degree in co-relation 696. Up to 20 conditions per place. [2022-11-16 12:28:11,400 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 50 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2022-11-16 12:28:11,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 390 transitions, 1318 flow [2022-11-16 12:28:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:28:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:28:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9323 transitions. [2022-11-16 12:28:11,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815660542432196 [2022-11-16 12:28:11,414 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9323 transitions. [2022-11-16 12:28:11,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9323 transitions. [2022-11-16 12:28:11,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:11,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9323 transitions. [2022-11-16 12:28:11,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.76666666666665) internal successors, (9323), 30 states have internal predecessors, (9323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,466 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,466 INFO L175 Difference]: Start difference. First operand has 370 places, 347 transitions, 948 flow. Second operand 30 states and 9323 transitions. [2022-11-16 12:28:11,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 390 transitions, 1318 flow [2022-11-16 12:28:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 390 transitions, 1238 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:28:11,480 INFO L231 Difference]: Finished difference. Result has 395 places, 357 transitions, 1046 flow [2022-11-16 12:28:11,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1046, PETRI_PLACES=395, PETRI_TRANSITIONS=357} [2022-11-16 12:28:11,482 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 66 predicate places. [2022-11-16 12:28:11,482 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 357 transitions, 1046 flow [2022-11-16 12:28:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:11,484 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:11,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:11,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:28:11,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1166110477, now seen corresponding path program 3 times [2022-11-16 12:28:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:11,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819478890] [2022-11-16 12:28:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:11,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819478890] [2022-11-16 12:28:11,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819478890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:11,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514141964] [2022-11-16 12:28:11,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:28:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:11,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:11,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:28:12,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:28:12,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:12,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:12,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:12,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:12,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514141964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:12,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:12,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:28:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791306327] [2022-11-16 12:28:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:12,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:12,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 357 transitions, 1046 flow. Second operand has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:12,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:12,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:12,343 INFO L130 PetriNetUnfolder]: 14/635 cut-off events. [2022-11-16 12:28:12,358 INFO L131 PetriNetUnfolder]: For 287/434 co-relation queries the response was YES. [2022-11-16 12:28:12,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 635 events. 14/635 cut-off events. For 287/434 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2516 event pairs, 1 based on Foata normal form. 5/579 useless extension candidates. Maximal degree in co-relation 644. Up to 30 conditions per place. [2022-11-16 12:28:12,387 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/356 dead transitions. [2022-11-16 12:28:12,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 356 transitions, 1082 flow [2022-11-16 12:28:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:28:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-16 12:28:12,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-16 12:28:12,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-16 12:28:12,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-16 12:28:12,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:12,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-16 12:28:12,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,443 INFO L175 Difference]: Start difference. First operand has 395 places, 357 transitions, 1046 flow. Second operand 4 states and 1249 transitions. [2022-11-16 12:28:12,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 356 transitions, 1082 flow [2022-11-16 12:28:12,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 356 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:28:12,462 INFO L231 Difference]: Finished difference. Result has 379 places, 356 transitions, 1006 flow [2022-11-16 12:28:12,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1006, PETRI_PLACES=379, PETRI_TRANSITIONS=356} [2022-11-16 12:28:12,469 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 50 predicate places. [2022-11-16 12:28:12,470 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 356 transitions, 1006 flow [2022-11-16 12:28:12,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:12,471 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:12,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:12,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:28:12,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -144955637, now seen corresponding path program 1 times [2022-11-16 12:28:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142482975] [2022-11-16 12:28:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:12,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142482975] [2022-11-16 12:28:12,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142482975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:12,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500715740] [2022-11-16 12:28:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:12,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:12,826 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:12,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:28:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:13,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:28:13,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:13,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:13,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500715740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:13,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:13,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:28:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738340187] [2022-11-16 12:28:13,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:13,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:13,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:28:13,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 356 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:13,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:13,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:28:13,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:13,372 INFO L130 PetriNetUnfolder]: 10/531 cut-off events. [2022-11-16 12:28:13,372 INFO L131 PetriNetUnfolder]: For 254/271 co-relation queries the response was YES. [2022-11-16 12:28:13,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 531 events. 10/531 cut-off events. For 254/271 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1494 event pairs, 5 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 542. Up to 17 conditions per place. [2022-11-16 12:28:13,387 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-16 12:28:13,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 367 transitions, 1106 flow [2022-11-16 12:28:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:28:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-16 12:28:13,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-16 12:28:13,392 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-16 12:28:13,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-16 12:28:13,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:13,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-16 12:28:13,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:13,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:13,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:13,407 INFO L175 Difference]: Start difference. First operand has 379 places, 356 transitions, 1006 flow. Second operand 9 states and 2805 transitions. [2022-11-16 12:28:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 367 transitions, 1106 flow [2022-11-16 12:28:13,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 367 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:28:13,418 INFO L231 Difference]: Finished difference. Result has 388 places, 360 transitions, 1052 flow [2022-11-16 12:28:13,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=388, PETRI_TRANSITIONS=360} [2022-11-16 12:28:13,425 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 59 predicate places. [2022-11-16 12:28:13,425 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 360 transitions, 1052 flow [2022-11-16 12:28:13,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:13,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:13,426 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:13,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:13,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1277518588, now seen corresponding path program 1 times [2022-11-16 12:28:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451507538] [2022-11-16 12:28:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:14,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:14,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451507538] [2022-11-16 12:28:14,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451507538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:14,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:14,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:28:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394337792] [2022-11-16 12:28:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:28:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:28:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:14,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 381 [2022-11-16 12:28:14,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 360 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 267.4) internal successors, (2674), 10 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:14,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:28:14,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 381 [2022-11-16 12:28:14,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:28:54,429 INFO L130 PetriNetUnfolder]: 51416/147120 cut-off events. [2022-11-16 12:28:54,430 INFO L131 PetriNetUnfolder]: For 4981/4981 co-relation queries the response was YES. [2022-11-16 12:28:56,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222102 conditions, 147120 events. 51416/147120 cut-off events. For 4981/4981 co-relation queries the response was YES. Maximal size of possible extension queue 4424. Compared 2187756 event pairs, 11626 based on Foata normal form. 0/135642 useless extension candidates. Maximal degree in co-relation 221831. Up to 35157 conditions per place. [2022-11-16 12:28:57,389 INFO L137 encePairwiseOnDemand]: 363/381 looper letters, 375 selfloop transitions, 67 changer transitions 0/741 dead transitions. [2022-11-16 12:28:57,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 741 transitions, 2861 flow [2022-11-16 12:28:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:28:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:28:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6284 transitions. [2022-11-16 12:28:57,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7497017418277261 [2022-11-16 12:28:57,404 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6284 transitions. [2022-11-16 12:28:57,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6284 transitions. [2022-11-16 12:28:57,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:28:57,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6284 transitions. [2022-11-16 12:28:57,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 285.6363636363636) internal successors, (6284), 22 states have internal predecessors, (6284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:57,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 381.0) internal successors, (8763), 23 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:57,433 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 381.0) internal successors, (8763), 23 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:57,433 INFO L175 Difference]: Start difference. First operand has 388 places, 360 transitions, 1052 flow. Second operand 22 states and 6284 transitions. [2022-11-16 12:28:57,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 741 transitions, 2861 flow [2022-11-16 12:28:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 741 transitions, 2845 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:28:57,475 INFO L231 Difference]: Finished difference. Result has 421 places, 446 transitions, 1582 flow [2022-11-16 12:28:57,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1582, PETRI_PLACES=421, PETRI_TRANSITIONS=446} [2022-11-16 12:28:57,478 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 92 predicate places. [2022-11-16 12:28:57,479 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 446 transitions, 1582 flow [2022-11-16 12:28:57,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 267.4) internal successors, (2674), 10 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:57,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:28:57,480 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-16 12:28:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:28:57,481 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:28:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1490862860, now seen corresponding path program 1 times [2022-11-16 12:28:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:57,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495243985] [2022-11-16 12:28:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:58,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495243985] [2022-11-16 12:28:58,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495243985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:58,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813867247] [2022-11-16 12:28:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:58,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:58,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:58,074 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:58,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d033b5-4ef9-493f-a522-3526dc5ea97d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:28:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:58,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:28:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:58,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-16 12:28:59,316 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:28:59,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:28:59,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 12:28:59,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-16 12:28:59,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 12:28:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:28:59,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:59,887 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_762 (Array Int Int)) (|t_funThread1of3ForFork0_~p~0#1.offset| Int)) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_762) |c_~#a~0.base|) |t_funThread1of3ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2022-11-16 12:29:00,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 12:29:00,895 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:29:00,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 12:29:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 4 not checked. [2022-11-16 12:29:00,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813867247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:00,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:29:00,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-16 12:29:00,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584976402] [2022-11-16 12:29:00,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:00,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:29:00,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:29:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=317, Unknown=6, NotChecked=36, Total=420 [2022-11-16 12:29:00,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 381 [2022-11-16 12:29:00,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 446 transitions, 1582 flow. Second operand has 21 states, 21 states have (on average 267.3809523809524) internal successors, (5615), 21 states have internal predecessors, (5615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:00,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:00,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 381 [2022-11-16 12:29:00,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand